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Diffstat (limited to 'mysql-test/main/partition_pruning.result')
| -rw-r--r-- | mysql-test/main/partition_pruning.result | 3545 |
1 files changed, 3545 insertions, 0 deletions
diff --git a/mysql-test/main/partition_pruning.result b/mysql-test/main/partition_pruning.result new file mode 100644 index 00000000..ad3883fd --- /dev/null +++ b/mysql-test/main/partition_pruning.result @@ -0,0 +1,3545 @@ +drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9; +# +# Bug#53806: Wrong estimates for range query in partitioned MyISAM table +# Bug#46754: 'rows' field doesn't reflect partition pruning +# +CREATE TABLE t1 (a INT PRIMARY KEY) +PARTITION BY RANGE (a) ( +PARTITION p0 VALUES LESS THAN (1), +PARTITION p1 VALUES LESS THAN (2), +PARTITION p2 VALUES LESS THAN (3), +PARTITION p3 VALUES LESS THAN (4), +PARTITION p4 VALUES LESS THAN (5), +PARTITION p5 VALUES LESS THAN (6), +PARTITION max VALUES LESS THAN MAXVALUE); +INSERT INTO t1 VALUES (-1),(0),(1),(2),(3),(4),(5),(6),(7),(8); +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= 1; +id select_type table partitions type possible_keys key key_len ref rows Extra +# # # # # # # # # 3 # +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < 7; +id select_type table partitions type possible_keys key key_len ref rows Extra +# # # # # # # # # 8 # +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= 1; +id select_type table partitions type possible_keys key key_len ref rows Extra +# # # # # # # # # 3 # +DROP TABLE t1; +# +# Bug#49742: Partition Pruning not working correctly for RANGE +# +CREATE TABLE t1 (a INT PRIMARY KEY) +PARTITION BY RANGE (a) ( +PARTITION p0 VALUES LESS THAN (1), +PARTITION p1 VALUES LESS THAN (2), +PARTITION p2 VALUES LESS THAN (3), +PARTITION p3 VALUES LESS THAN (4), +PARTITION p4 VALUES LESS THAN (5), +PARTITION p5 VALUES LESS THAN (6), +PARTITION max VALUES LESS THAN MAXVALUE); +INSERT INTO t1 VALUES (-1),(0),(1),(2),(3),(4),(5),(6),(7),(8); +SELECT * FROM t1 WHERE a < 1; +a +-1 +0 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < 1; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0 range PRIMARY PRIMARY 4 NULL 2 Using where; Using index +SELECT * FROM t1 WHERE a < 2; +a +-1 +0 +1 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < 2; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0,p1 range PRIMARY PRIMARY 4 NULL 3 Using where; Using index +SELECT * FROM t1 WHERE a < 3; +a +-1 +0 +1 +2 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < 3; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0,p1,p2 range PRIMARY PRIMARY 4 NULL 4 Using where; Using index +SELECT * FROM t1 WHERE a < 4; +a +-1 +0 +1 +2 +3 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < 4; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0,p1,p2,p3 range PRIMARY PRIMARY 4 NULL 5 Using where; Using index +SELECT * FROM t1 WHERE a < 5; +a +-1 +0 +1 +2 +3 +4 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < 5; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0,p1,p2,p3,p4 range PRIMARY PRIMARY 4 NULL 6 Using where; Using index +SELECT * FROM t1 WHERE a < 6; +a +-1 +0 +1 +2 +3 +4 +5 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < 6; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0,p1,p2,p3,p4,p5 range PRIMARY PRIMARY 4 NULL 7 Using where; Using index +SELECT * FROM t1 WHERE a < 7; +a +-1 +0 +1 +2 +3 +4 +5 +6 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < 7; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0,p1,p2,p3,p4,p5,max range PRIMARY PRIMARY 4 NULL 8 Using where; Using index +SELECT * FROM t1 WHERE a <= 1; +a +-1 +0 +1 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= 1; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0,p1 range PRIMARY PRIMARY 4 NULL 3 Using where; Using index +SELECT * FROM t1 WHERE a <= 2; +a +-1 +0 +1 +2 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= 2; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0,p1,p2 range PRIMARY PRIMARY 4 NULL 4 Using where; Using index +SELECT * FROM t1 WHERE a <= 3; +a +-1 +0 +1 +2 +3 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= 3; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0,p1,p2,p3 range PRIMARY PRIMARY 4 NULL 5 Using where; Using index +SELECT * FROM t1 WHERE a <= 4; +a +-1 +0 +1 +2 +3 +4 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= 4; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0,p1,p2,p3,p4 range PRIMARY PRIMARY 4 NULL 6 Using where; Using index +SELECT * FROM t1 WHERE a <= 5; +a +-1 +0 +1 +2 +3 +4 +5 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= 5; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0,p1,p2,p3,p4,p5 range PRIMARY PRIMARY 4 NULL 7 Using where; Using index +SELECT * FROM t1 WHERE a <= 6; +a +-1 +0 +1 +2 +3 +4 +5 +6 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= 6; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0,p1,p2,p3,p4,p5,max range PRIMARY PRIMARY 4 NULL 8 Using where; Using index +SELECT * FROM t1 WHERE a <= 7; +a +-1 +0 +1 +2 +3 +4 +5 +6 +7 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= 7; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0,p1,p2,p3,p4,p5,max range PRIMARY PRIMARY 4 NULL 9 Using where; Using index +SELECT * FROM t1 WHERE a = 1; +a +1 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = 1; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p1 system PRIMARY NULL NULL NULL 1 +SELECT * FROM t1 WHERE a = 2; +a +2 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = 2; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p2 system PRIMARY NULL NULL NULL 1 +SELECT * FROM t1 WHERE a = 3; +a +3 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = 3; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p3 system PRIMARY NULL NULL NULL 1 +SELECT * FROM t1 WHERE a = 4; +a +4 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = 4; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p4 system PRIMARY NULL NULL NULL 1 +SELECT * FROM t1 WHERE a = 5; +a +5 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = 5; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p5 system PRIMARY NULL NULL NULL 1 +SELECT * FROM t1 WHERE a = 6; +a +6 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = 6; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 max const PRIMARY PRIMARY 4 const 1 Using index +SELECT * FROM t1 WHERE a = 7; +a +7 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = 7; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 max const PRIMARY PRIMARY 4 const 1 Using index +SELECT * FROM t1 WHERE a >= 1; +a +1 +2 +3 +4 +5 +6 +7 +8 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= 1; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p1,p2,p3,p4,p5,max range PRIMARY PRIMARY 4 NULL 8 Using where; Using index +SELECT * FROM t1 WHERE a >= 2; +a +2 +3 +4 +5 +6 +7 +8 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= 2; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p2,p3,p4,p5,max range PRIMARY PRIMARY 4 NULL 7 Using where; Using index +SELECT * FROM t1 WHERE a >= 3; +a +3 +4 +5 +6 +7 +8 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= 3; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p3,p4,p5,max range PRIMARY PRIMARY 4 NULL 6 Using where; Using index +SELECT * FROM t1 WHERE a >= 4; +a +4 +5 +6 +7 +8 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= 4; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p4,p5,max range PRIMARY PRIMARY 4 NULL 5 Using where; Using index +SELECT * FROM t1 WHERE a >= 5; +a +5 +6 +7 +8 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= 5; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p5,max range PRIMARY PRIMARY 4 NULL 4 Using where; Using index +SELECT * FROM t1 WHERE a >= 6; +a +6 +7 +8 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= 6; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 max range PRIMARY PRIMARY 4 NULL 3 Using where; Using index +SELECT * FROM t1 WHERE a >= 7; +a +7 +8 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= 7; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 max range PRIMARY PRIMARY 4 NULL 2 Using where; Using index +SELECT * FROM t1 WHERE a > 1; +a +2 +3 +4 +5 +6 +7 +8 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > 1; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p2,p3,p4,p5,max range PRIMARY PRIMARY 4 NULL 7 Using where; Using index +SELECT * FROM t1 WHERE a > 2; +a +3 +4 +5 +6 +7 +8 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > 2; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p3,p4,p5,max range PRIMARY PRIMARY 4 NULL 6 Using where; Using index +SELECT * FROM t1 WHERE a > 3; +a +4 +5 +6 +7 +8 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > 3; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p4,p5,max range PRIMARY PRIMARY 4 NULL 5 Using where; Using index +SELECT * FROM t1 WHERE a > 4; +a +5 +6 +7 +8 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > 4; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p5,max range PRIMARY PRIMARY 4 NULL 4 Using where; Using index +SELECT * FROM t1 WHERE a > 5; +a +6 +7 +8 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > 5; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 max range PRIMARY PRIMARY 4 NULL 3 Using where; Using index +SELECT * FROM t1 WHERE a > 6; +a +7 +8 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > 6; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 max range PRIMARY PRIMARY 4 NULL 2 Using where; Using index +SELECT * FROM t1 WHERE a > 7; +a +8 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > 7; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 max range PRIMARY PRIMARY 4 NULL 1 Using where; Using index +DROP TABLE t1; +CREATE TABLE t1 (a INT PRIMARY KEY) +PARTITION BY RANGE (a) ( +PARTITION p0 VALUES LESS THAN (1), +PARTITION p1 VALUES LESS THAN (2), +PARTITION p2 VALUES LESS THAN (3), +PARTITION p3 VALUES LESS THAN (4), +PARTITION p4 VALUES LESS THAN (5), +PARTITION max VALUES LESS THAN MAXVALUE); +INSERT INTO t1 VALUES (-1),(0),(1),(2),(3),(4),(5),(6),(7); +SELECT * FROM t1 WHERE a < 1; +a +-1 +0 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < 1; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0 range PRIMARY PRIMARY 4 NULL 2 Using where; Using index +SELECT * FROM t1 WHERE a < 2; +a +-1 +0 +1 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < 2; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0,p1 range PRIMARY PRIMARY 4 NULL 3 Using where; Using index +SELECT * FROM t1 WHERE a < 3; +a +-1 +0 +1 +2 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < 3; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0,p1,p2 range PRIMARY PRIMARY 4 NULL 4 Using where; Using index +SELECT * FROM t1 WHERE a < 4; +a +-1 +0 +1 +2 +3 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < 4; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0,p1,p2,p3 range PRIMARY PRIMARY 4 NULL 5 Using where; Using index +SELECT * FROM t1 WHERE a < 5; +a +-1 +0 +1 +2 +3 +4 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < 5; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0,p1,p2,p3,p4 range PRIMARY PRIMARY 4 NULL 6 Using where; Using index +SELECT * FROM t1 WHERE a < 6; +a +-1 +0 +1 +2 +3 +4 +5 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < 6; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0,p1,p2,p3,p4,max range PRIMARY PRIMARY 4 NULL 7 Using where; Using index +SELECT * FROM t1 WHERE a <= 1; +a +-1 +0 +1 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= 1; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0,p1 range PRIMARY PRIMARY 4 NULL 3 Using where; Using index +SELECT * FROM t1 WHERE a <= 2; +a +-1 +0 +1 +2 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= 2; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0,p1,p2 range PRIMARY PRIMARY 4 NULL 4 Using where; Using index +SELECT * FROM t1 WHERE a <= 3; +a +-1 +0 +1 +2 +3 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= 3; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0,p1,p2,p3 range PRIMARY PRIMARY 4 NULL 5 Using where; Using index +SELECT * FROM t1 WHERE a <= 4; +a +-1 +0 +1 +2 +3 +4 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= 4; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0,p1,p2,p3,p4 range PRIMARY PRIMARY 4 NULL 6 Using where; Using index +SELECT * FROM t1 WHERE a <= 5; +a +-1 +0 +1 +2 +3 +4 +5 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= 5; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0,p1,p2,p3,p4,max range PRIMARY PRIMARY 4 NULL 7 Using where; Using index +SELECT * FROM t1 WHERE a <= 6; +a +-1 +0 +1 +2 +3 +4 +5 +6 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= 6; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0,p1,p2,p3,p4,max range PRIMARY PRIMARY 4 NULL 8 Using where; Using index +SELECT * FROM t1 WHERE a = 1; +a +1 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = 1; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p1 system PRIMARY NULL NULL NULL 1 +SELECT * FROM t1 WHERE a = 2; +a +2 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = 2; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p2 system PRIMARY NULL NULL NULL 1 +SELECT * FROM t1 WHERE a = 3; +a +3 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = 3; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p3 system PRIMARY NULL NULL NULL 1 +SELECT * FROM t1 WHERE a = 4; +a +4 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = 4; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p4 system PRIMARY NULL NULL NULL 1 +SELECT * FROM t1 WHERE a = 5; +a +5 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = 5; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 max const PRIMARY PRIMARY 4 const 1 Using index +SELECT * FROM t1 WHERE a = 6; +a +6 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = 6; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 max const PRIMARY PRIMARY 4 const 1 Using index +SELECT * FROM t1 WHERE a >= 1; +a +1 +2 +3 +4 +5 +6 +7 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= 1; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p1,p2,p3,p4,max range PRIMARY PRIMARY 4 NULL 7 Using where; Using index +SELECT * FROM t1 WHERE a >= 2; +a +2 +3 +4 +5 +6 +7 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= 2; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p2,p3,p4,max range PRIMARY PRIMARY 4 NULL 6 Using where; Using index +SELECT * FROM t1 WHERE a >= 3; +a +3 +4 +5 +6 +7 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= 3; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p3,p4,max range PRIMARY PRIMARY 4 NULL 5 Using where; Using index +SELECT * FROM t1 WHERE a >= 4; +a +4 +5 +6 +7 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= 4; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p4,max range PRIMARY PRIMARY 4 NULL 4 Using where; Using index +SELECT * FROM t1 WHERE a >= 5; +a +5 +6 +7 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= 5; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 max range PRIMARY PRIMARY 4 NULL 3 Using where; Using index +SELECT * FROM t1 WHERE a >= 6; +a +6 +7 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= 6; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 max range PRIMARY PRIMARY 4 NULL 2 Using where; Using index +SELECT * FROM t1 WHERE a > 1; +a +2 +3 +4 +5 +6 +7 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > 1; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p2,p3,p4,max range PRIMARY PRIMARY 4 NULL 6 Using where; Using index +SELECT * FROM t1 WHERE a > 2; +a +3 +4 +5 +6 +7 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > 2; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p3,p4,max range PRIMARY PRIMARY 4 NULL 5 Using where; Using index +SELECT * FROM t1 WHERE a > 3; +a +4 +5 +6 +7 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > 3; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p4,max range PRIMARY PRIMARY 4 NULL 4 Using where; Using index +SELECT * FROM t1 WHERE a > 4; +a +5 +6 +7 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > 4; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 max range PRIMARY PRIMARY 4 NULL 3 Using where; Using index +SELECT * FROM t1 WHERE a > 5; +a +6 +7 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > 5; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 max range PRIMARY PRIMARY 4 NULL 2 Using where; Using index +SELECT * FROM t1 WHERE a > 6; +a +7 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > 6; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 max range PRIMARY PRIMARY 4 NULL 1 Using where; Using index +DROP TABLE t1; +# test of RANGE and index +CREATE TABLE t1 (a DATE, KEY(a)) +PARTITION BY RANGE (TO_DAYS(a)) +(PARTITION `pNULL` VALUES LESS THAN (0), +PARTITION `p0001-01-01` VALUES LESS THAN (366 + 1), +PARTITION `p1001-01-01` VALUES LESS THAN (TO_DAYS('1001-01-01') + 1), +PARTITION `p2001-01-01` VALUES LESS THAN (TO_DAYS('2001-01-01') + 1)); +INSERT INTO t1 VALUES ('0000-00-00'), ('0000-01-02'), ('0001-01-01'), +('1001-00-00'), ('1001-01-01'), ('1002-00-00'), ('2001-01-01'); +SELECT * FROM t1 WHERE a < '1001-01-01'; +a +0000-00-00 +0000-01-02 +0001-01-01 +1001-00-00 +SELECT * FROM t1 WHERE a <= '1001-01-01'; +a +0000-00-00 +0000-01-02 +0001-01-01 +1001-00-00 +1001-01-01 +SELECT * FROM t1 WHERE a >= '1001-01-01'; +a +1001-01-01 +1002-00-00 +2001-01-01 +SELECT * FROM t1 WHERE a > '1001-01-01'; +a +1002-00-00 +2001-01-01 +SELECT * FROM t1 WHERE a = '1001-01-01'; +a +1001-01-01 +SELECT * FROM t1 WHERE a < '1001-00-00'; +a +0000-00-00 +0000-01-02 +0001-01-01 +SELECT * FROM t1 WHERE a <= '1001-00-00'; +a +0000-00-00 +0000-01-02 +0001-01-01 +1001-00-00 +SELECT * FROM t1 WHERE a >= '1001-00-00'; +a +1001-00-00 +1001-01-01 +1002-00-00 +2001-01-01 +SELECT * FROM t1 WHERE a > '1001-00-00'; +a +1001-01-01 +1002-00-00 +2001-01-01 +SELECT * FROM t1 WHERE a = '1001-00-00'; +a +1001-00-00 +# Disabling warnings for the invalid date +SELECT * FROM t1 WHERE a < '1999-02-31'; +a +0000-00-00 +0000-01-02 +0001-01-01 +1001-00-00 +1001-01-01 +1002-00-00 +SELECT * FROM t1 WHERE a <= '1999-02-31'; +a +0000-00-00 +0000-01-02 +0001-01-01 +1001-00-00 +1001-01-01 +1002-00-00 +SELECT * FROM t1 WHERE a >= '1999-02-31'; +a +2001-01-01 +SELECT * FROM t1 WHERE a > '1999-02-31'; +a +2001-01-01 +SELECT * FROM t1 WHERE a = '1999-02-31'; +a +SELECT * FROM t1 WHERE a BETWEEN '0000-00-00' AND '1002-00-00'; +a +0000-00-00 +0000-01-02 +0001-01-01 +1001-00-00 +1001-01-01 +1002-00-00 +SELECT * FROM t1 WHERE a BETWEEN '0000-00-00' AND '1001-01-01'; +a +0000-00-00 +0000-01-02 +0001-01-01 +1001-00-00 +1001-01-01 +SELECT * FROM t1 WHERE a BETWEEN '0001-01-02' AND '1002-00-00'; +a +1001-00-00 +1001-01-01 +1002-00-00 +SELECT * FROM t1 WHERE a BETWEEN '0001-01-01' AND '1001-01-01'; +a +0001-01-01 +1001-00-00 +1001-01-01 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < '1001-01-01'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 pNULL,p0001-01-01,p1001-01-01 range a a 4 NULL 5 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= '1001-01-01'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 pNULL,p0001-01-01,p1001-01-01 range a a 4 NULL 5 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= '1001-01-01'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 pNULL,p1001-01-01,p2001-01-01 range a a 4 NULL 3 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > '1001-01-01'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 pNULL,p2001-01-01 range a a 4 NULL 2 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = '1001-01-01'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p1001-01-01 system a NULL NULL NULL 1 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < '1001-00-00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 pNULL,p0001-01-01,p1001-01-01 range a a 4 NULL 4 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= '1001-00-00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 pNULL,p0001-01-01,p1001-01-01 range a a 4 NULL 5 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= '1001-00-00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 pNULL,p1001-01-01,p2001-01-01 range a a 4 NULL 4 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > '1001-00-00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 pNULL,p1001-01-01,p2001-01-01 range a a 4 NULL 3 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = '1001-00-00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 pNULL ref a a 4 const 1 Using index +# Disabling warnings for the invalid date +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < '1999-02-31'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 pNULL,p0001-01-01,p1001-01-01,p2001-01-01 range a a 4 NULL 7 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= '1999-02-31'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 pNULL,p0001-01-01,p1001-01-01,p2001-01-01 range a a 4 NULL 7 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= '1999-02-31'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 pNULL,p2001-01-01 range a a 4 NULL 2 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > '1999-02-31'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 pNULL,p2001-01-01 range a a 4 NULL 2 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = '1999-02-31'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 pNULL ref a a 4 const 1 Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a BETWEEN '0000-00-00' AND '1002-00-00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 pNULL,p0001-01-01,p1001-01-01,p2001-01-01 range a a 4 NULL 7 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a BETWEEN '0000-00-00' AND '1001-01-01'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 pNULL,p0001-01-01,p1001-01-01 range a a 4 NULL 5 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a BETWEEN '0001-01-02' AND '1002-00-00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 pNULL,p1001-01-01,p2001-01-01 range a a 4 NULL 4 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a BETWEEN '0001-01-01' AND '1001-01-01'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 pNULL,p0001-01-01,p1001-01-01 range a a 4 NULL 3 Using where; Using index +# test without index +ALTER TABLE t1 DROP KEY a; +SELECT * FROM t1 WHERE a < '1001-01-01'; +a +0000-00-00 +0000-01-02 +0001-01-01 +1001-00-00 +SELECT * FROM t1 WHERE a <= '1001-01-01'; +a +0000-00-00 +0000-01-02 +0001-01-01 +1001-00-00 +1001-01-01 +SELECT * FROM t1 WHERE a >= '1001-01-01'; +a +1001-01-01 +1002-00-00 +2001-01-01 +SELECT * FROM t1 WHERE a > '1001-01-01'; +a +1002-00-00 +2001-01-01 +SELECT * FROM t1 WHERE a = '1001-01-01'; +a +1001-01-01 +SELECT * FROM t1 WHERE a < '1001-00-00'; +a +0000-00-00 +0000-01-02 +0001-01-01 +SELECT * FROM t1 WHERE a <= '1001-00-00'; +a +0000-00-00 +0000-01-02 +0001-01-01 +1001-00-00 +SELECT * FROM t1 WHERE a >= '1001-00-00'; +a +1001-00-00 +1001-01-01 +1002-00-00 +2001-01-01 +SELECT * FROM t1 WHERE a > '1001-00-00'; +a +1001-01-01 +1002-00-00 +2001-01-01 +SELECT * FROM t1 WHERE a = '1001-00-00'; +a +1001-00-00 +# Disabling warnings for the invalid date +SELECT * FROM t1 WHERE a < '1999-02-31'; +a +0000-00-00 +0000-01-02 +0001-01-01 +1001-00-00 +1001-01-01 +1002-00-00 +SELECT * FROM t1 WHERE a <= '1999-02-31'; +a +0000-00-00 +0000-01-02 +0001-01-01 +1001-00-00 +1001-01-01 +1002-00-00 +SELECT * FROM t1 WHERE a >= '1999-02-31'; +a +2001-01-01 +SELECT * FROM t1 WHERE a > '1999-02-31'; +a +2001-01-01 +SELECT * FROM t1 WHERE a = '1999-02-31'; +a +SELECT * FROM t1 WHERE a BETWEEN '0000-00-00' AND '1002-00-00'; +a +0000-00-00 +0000-01-02 +0001-01-01 +1001-00-00 +1001-01-01 +1002-00-00 +SELECT * FROM t1 WHERE a BETWEEN '0000-00-00' AND '1001-01-01'; +a +0000-00-00 +0000-01-02 +0001-01-01 +1001-00-00 +1001-01-01 +SELECT * FROM t1 WHERE a BETWEEN '0001-01-02' AND '1002-00-00'; +a +1001-00-00 +1001-01-01 +1002-00-00 +SELECT * FROM t1 WHERE a BETWEEN '0001-01-01' AND '1001-01-01'; +a +0001-01-01 +1001-00-00 +1001-01-01 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < '1001-01-01'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 pNULL,p0001-01-01,p1001-01-01 ALL NULL NULL NULL NULL 6 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= '1001-01-01'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 pNULL,p0001-01-01,p1001-01-01 ALL NULL NULL NULL NULL 6 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= '1001-01-01'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 pNULL,p1001-01-01,p2001-01-01 ALL NULL NULL NULL NULL 5 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > '1001-01-01'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 pNULL,p2001-01-01 ALL NULL NULL NULL NULL 4 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = '1001-01-01'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p1001-01-01 system NULL NULL NULL NULL 1 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < '1001-00-00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 pNULL,p0001-01-01,p1001-01-01 ALL NULL NULL NULL NULL 6 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= '1001-00-00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 pNULL,p0001-01-01,p1001-01-01 ALL NULL NULL NULL NULL 6 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= '1001-00-00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 pNULL,p1001-01-01,p2001-01-01 ALL NULL NULL NULL NULL 5 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > '1001-00-00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 pNULL,p1001-01-01,p2001-01-01 ALL NULL NULL NULL NULL 5 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = '1001-00-00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 pNULL ALL NULL NULL NULL NULL 3 Using where +# Disabling warnings for the invalid date +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < '1999-02-31'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 pNULL,p0001-01-01,p1001-01-01,p2001-01-01 ALL NULL NULL NULL NULL 7 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= '1999-02-31'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 pNULL,p0001-01-01,p1001-01-01,p2001-01-01 ALL NULL NULL NULL NULL 7 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= '1999-02-31'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 pNULL,p2001-01-01 ALL NULL NULL NULL NULL 4 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > '1999-02-31'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 pNULL,p2001-01-01 ALL NULL NULL NULL NULL 4 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = '1999-02-31'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 pNULL ALL NULL NULL NULL NULL 3 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a BETWEEN '0000-00-00' AND '1002-00-00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 pNULL,p0001-01-01,p1001-01-01,p2001-01-01 ALL NULL NULL NULL NULL 7 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a BETWEEN '0000-00-00' AND '1001-01-01'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 pNULL,p0001-01-01,p1001-01-01 ALL NULL NULL NULL NULL 6 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a BETWEEN '0001-01-02' AND '1002-00-00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 pNULL,p1001-01-01,p2001-01-01 ALL NULL NULL NULL NULL 5 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a BETWEEN '0001-01-01' AND '1001-01-01'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 pNULL,p0001-01-01,p1001-01-01 ALL NULL NULL NULL NULL 6 Using where +DROP TABLE t1; +# test of LIST and index +CREATE TABLE t1 (a DATE, KEY(a)) +PARTITION BY LIST (TO_DAYS(a)) +(PARTITION `p0001-01-01` VALUES IN (TO_DAYS('0001-01-01')), +PARTITION `p2001-01-01` VALUES IN (TO_DAYS('2001-01-01')), +PARTITION `pNULL` VALUES IN (NULL), +PARTITION `p0000-01-02` VALUES IN (TO_DAYS('0000-01-02')), +PARTITION `p1001-01-01` VALUES IN (TO_DAYS('1001-01-01'))); +INSERT INTO t1 VALUES ('0000-00-00'), ('0000-01-02'), ('0001-01-01'), +('1001-00-00'), ('1001-01-01'), ('1002-00-00'), ('2001-01-01'); +SELECT * FROM t1 WHERE a < '1001-01-01'; +a +0000-00-00 +0000-01-02 +0001-01-01 +1001-00-00 +SELECT * FROM t1 WHERE a <= '1001-01-01'; +a +0000-00-00 +0000-01-02 +0001-01-01 +1001-00-00 +1001-01-01 +SELECT * FROM t1 WHERE a >= '1001-01-01'; +a +1001-01-01 +1002-00-00 +2001-01-01 +SELECT * FROM t1 WHERE a > '1001-01-01'; +a +1002-00-00 +2001-01-01 +SELECT * FROM t1 WHERE a = '1001-01-01'; +a +1001-01-01 +SELECT * FROM t1 WHERE a < '1001-00-00'; +a +0000-00-00 +0000-01-02 +0001-01-01 +SELECT * FROM t1 WHERE a <= '1001-00-00'; +a +0000-00-00 +0000-01-02 +0001-01-01 +1001-00-00 +SELECT * FROM t1 WHERE a >= '1001-00-00'; +a +1001-00-00 +1001-01-01 +1002-00-00 +2001-01-01 +SELECT * FROM t1 WHERE a > '1001-00-00'; +a +1001-01-01 +1002-00-00 +2001-01-01 +SELECT * FROM t1 WHERE a = '1001-00-00'; +a +1001-00-00 +# Disabling warnings for the invalid date +SELECT * FROM t1 WHERE a < '1999-02-31'; +a +0000-00-00 +0000-01-02 +0001-01-01 +1001-00-00 +1001-01-01 +1002-00-00 +SELECT * FROM t1 WHERE a <= '1999-02-31'; +a +0000-00-00 +0000-01-02 +0001-01-01 +1001-00-00 +1001-01-01 +1002-00-00 +SELECT * FROM t1 WHERE a >= '1999-02-31'; +a +2001-01-01 +SELECT * FROM t1 WHERE a > '1999-02-31'; +a +2001-01-01 +SELECT * FROM t1 WHERE a = '1999-02-31'; +a +SELECT * FROM t1 WHERE a BETWEEN '0000-00-00' AND '1002-00-00'; +a +0000-00-00 +0000-01-02 +0001-01-01 +1001-00-00 +1001-01-01 +1002-00-00 +SELECT * FROM t1 WHERE a BETWEEN '0000-00-00' AND '1001-01-01'; +a +0000-00-00 +0000-01-02 +0001-01-01 +1001-00-00 +1001-01-01 +SELECT * FROM t1 WHERE a BETWEEN '0001-01-02' AND '1002-00-00'; +a +1001-00-00 +1001-01-01 +1002-00-00 +SELECT * FROM t1 WHERE a BETWEEN '0001-01-01' AND '1001-01-01'; +a +0001-01-01 +1001-00-00 +1001-01-01 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < '1001-01-01'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02 range a a 4 NULL 4 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= '1001-01-01'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02,p1001-01-01 range a a 4 NULL 5 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= '1001-01-01'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p2001-01-01,pNULL,p1001-01-01 range a a 4 NULL 3 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > '1001-01-01'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p2001-01-01,pNULL range a a 4 NULL 2 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = '1001-01-01'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p1001-01-01 system a NULL NULL NULL 1 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < '1001-00-00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02 range a a 4 NULL 3 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= '1001-00-00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02 range a a 4 NULL 4 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= '1001-00-00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p2001-01-01,pNULL,p1001-01-01 range a a 4 NULL 4 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > '1001-00-00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p2001-01-01,pNULL,p1001-01-01 range a a 4 NULL 3 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = '1001-00-00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 pNULL ref a a 4 const 1 Using index +# Disabling warnings for the invalid date +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < '1999-02-31'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02,p1001-01-01 range a a 4 NULL 6 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= '1999-02-31'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02,p1001-01-01 range a a 4 NULL 6 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= '1999-02-31'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p2001-01-01,pNULL range a a 4 NULL 2 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > '1999-02-31'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p2001-01-01,pNULL range a a 4 NULL 2 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = '1999-02-31'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 pNULL ref a a 4 const 1 Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a BETWEEN '0000-00-00' AND '1002-00-00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02,p1001-01-01 range a a 4 NULL 6 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a BETWEEN '0000-00-00' AND '1001-01-01'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02,p1001-01-01 range a a 4 NULL 5 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a BETWEEN '0001-01-02' AND '1002-00-00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 pNULL,p1001-01-01 range a a 4 NULL 3 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a BETWEEN '0001-01-01' AND '1001-01-01'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0001-01-01,pNULL,p1001-01-01 range a a 4 NULL 3 Using where; Using index +# test without index +ALTER TABLE t1 DROP KEY a; +SELECT * FROM t1 WHERE a < '1001-01-01'; +a +0000-00-00 +0000-01-02 +0001-01-01 +1001-00-00 +SELECT * FROM t1 WHERE a <= '1001-01-01'; +a +0000-00-00 +0000-01-02 +0001-01-01 +1001-00-00 +1001-01-01 +SELECT * FROM t1 WHERE a >= '1001-01-01'; +a +1001-01-01 +1002-00-00 +2001-01-01 +SELECT * FROM t1 WHERE a > '1001-01-01'; +a +1002-00-00 +2001-01-01 +SELECT * FROM t1 WHERE a = '1001-01-01'; +a +1001-01-01 +SELECT * FROM t1 WHERE a < '1001-00-00'; +a +0000-00-00 +0000-01-02 +0001-01-01 +SELECT * FROM t1 WHERE a <= '1001-00-00'; +a +0000-00-00 +0000-01-02 +0001-01-01 +1001-00-00 +SELECT * FROM t1 WHERE a >= '1001-00-00'; +a +1001-00-00 +1001-01-01 +1002-00-00 +2001-01-01 +SELECT * FROM t1 WHERE a > '1001-00-00'; +a +1001-01-01 +1002-00-00 +2001-01-01 +SELECT * FROM t1 WHERE a = '1001-00-00'; +a +1001-00-00 +# Disabling warnings for the invalid date +SELECT * FROM t1 WHERE a < '1999-02-31'; +a +0000-00-00 +0000-01-02 +0001-01-01 +1001-00-00 +1001-01-01 +1002-00-00 +SELECT * FROM t1 WHERE a <= '1999-02-31'; +a +0000-00-00 +0000-01-02 +0001-01-01 +1001-00-00 +1001-01-01 +1002-00-00 +SELECT * FROM t1 WHERE a >= '1999-02-31'; +a +2001-01-01 +SELECT * FROM t1 WHERE a > '1999-02-31'; +a +2001-01-01 +SELECT * FROM t1 WHERE a = '1999-02-31'; +a +SELECT * FROM t1 WHERE a BETWEEN '0000-00-00' AND '1002-00-00'; +a +0000-00-00 +0000-01-02 +0001-01-01 +1001-00-00 +1001-01-01 +1002-00-00 +SELECT * FROM t1 WHERE a BETWEEN '0000-00-00' AND '1001-01-01'; +a +0000-00-00 +0000-01-02 +0001-01-01 +1001-00-00 +1001-01-01 +SELECT * FROM t1 WHERE a BETWEEN '0001-01-02' AND '1002-00-00'; +a +1001-00-00 +1001-01-01 +1002-00-00 +SELECT * FROM t1 WHERE a BETWEEN '0001-01-01' AND '1001-01-01'; +a +0001-01-01 +1001-00-00 +1001-01-01 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < '1001-01-01'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02 ALL NULL NULL NULL NULL 5 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= '1001-01-01'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02,p1001-01-01 ALL NULL NULL NULL NULL 6 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= '1001-01-01'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p2001-01-01,pNULL,p1001-01-01 ALL NULL NULL NULL NULL 5 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > '1001-01-01'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p2001-01-01,pNULL ALL NULL NULL NULL NULL 4 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = '1001-01-01'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p1001-01-01 system NULL NULL NULL NULL 1 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < '1001-00-00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02 ALL NULL NULL NULL NULL 5 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= '1001-00-00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02 ALL NULL NULL NULL NULL 5 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= '1001-00-00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p2001-01-01,pNULL,p1001-01-01 ALL NULL NULL NULL NULL 5 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > '1001-00-00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p2001-01-01,pNULL,p1001-01-01 ALL NULL NULL NULL NULL 5 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = '1001-00-00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 pNULL ALL NULL NULL NULL NULL 3 Using where +# Disabling warnings for the invalid date +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < '1999-02-31'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02,p1001-01-01 ALL NULL NULL NULL NULL 6 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= '1999-02-31'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02,p1001-01-01 ALL NULL NULL NULL NULL 6 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= '1999-02-31'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p2001-01-01,pNULL ALL NULL NULL NULL NULL 4 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > '1999-02-31'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p2001-01-01,pNULL ALL NULL NULL NULL NULL 4 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = '1999-02-31'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 pNULL ALL NULL NULL NULL NULL 3 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a BETWEEN '0000-00-00' AND '1002-00-00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02,p1001-01-01 ALL NULL NULL NULL NULL 6 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a BETWEEN '0000-00-00' AND '1001-01-01'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02,p1001-01-01 ALL NULL NULL NULL NULL 6 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a BETWEEN '0001-01-02' AND '1002-00-00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 pNULL,p1001-01-01 ALL NULL NULL NULL NULL 4 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a BETWEEN '0001-01-01' AND '1001-01-01'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0001-01-01,pNULL,p1001-01-01 ALL NULL NULL NULL NULL 5 Using where +DROP TABLE t1; +# TO_SECONDS, test of LIST and index +CREATE TABLE t1 (a DATE, KEY(a)) +PARTITION BY LIST (TO_SECONDS(a)) +(PARTITION `p0001-01-01` VALUES IN (TO_SECONDS('0001-01-01')), +PARTITION `p2001-01-01` VALUES IN (TO_SECONDS('2001-01-01')), +PARTITION `pNULL` VALUES IN (NULL), +PARTITION `p0000-01-02` VALUES IN (TO_SECONDS('0000-01-02')), +PARTITION `p1001-01-01` VALUES IN (TO_SECONDS('1001-01-01'))); +INSERT INTO t1 VALUES ('0000-00-00'), ('0000-01-02'), ('0001-01-01'), +('1001-00-00'), ('1001-01-01'), ('1002-00-00'), ('2001-01-01'); +SELECT * FROM t1 WHERE a < '1001-01-01'; +a +0000-00-00 +0000-01-02 +0001-01-01 +1001-00-00 +SELECT * FROM t1 WHERE a <= '1001-01-01'; +a +0000-00-00 +0000-01-02 +0001-01-01 +1001-00-00 +1001-01-01 +SELECT * FROM t1 WHERE a >= '1001-01-01'; +a +1001-01-01 +1002-00-00 +2001-01-01 +SELECT * FROM t1 WHERE a > '1001-01-01'; +a +1002-00-00 +2001-01-01 +SELECT * FROM t1 WHERE a = '1001-01-01'; +a +1001-01-01 +SELECT * FROM t1 WHERE a < '1001-00-00'; +a +0000-00-00 +0000-01-02 +0001-01-01 +SELECT * FROM t1 WHERE a <= '1001-00-00'; +a +0000-00-00 +0000-01-02 +0001-01-01 +1001-00-00 +SELECT * FROM t1 WHERE a >= '1001-00-00'; +a +1001-00-00 +1001-01-01 +1002-00-00 +2001-01-01 +SELECT * FROM t1 WHERE a > '1001-00-00'; +a +1001-01-01 +1002-00-00 +2001-01-01 +SELECT * FROM t1 WHERE a = '1001-00-00'; +a +1001-00-00 +# Disabling warnings for the invalid date +SELECT * FROM t1 WHERE a < '1999-02-31'; +a +0000-00-00 +0000-01-02 +0001-01-01 +1001-00-00 +1001-01-01 +1002-00-00 +SELECT * FROM t1 WHERE a <= '1999-02-31'; +a +0000-00-00 +0000-01-02 +0001-01-01 +1001-00-00 +1001-01-01 +1002-00-00 +SELECT * FROM t1 WHERE a >= '1999-02-31'; +a +2001-01-01 +SELECT * FROM t1 WHERE a > '1999-02-31'; +a +2001-01-01 +SELECT * FROM t1 WHERE a = '1999-02-31'; +a +SELECT * FROM t1 WHERE a BETWEEN '0000-00-00' AND '1002-00-00'; +a +0000-00-00 +0000-01-02 +0001-01-01 +1001-00-00 +1001-01-01 +1002-00-00 +SELECT * FROM t1 WHERE a BETWEEN '0000-00-00' AND '1001-01-01'; +a +0000-00-00 +0000-01-02 +0001-01-01 +1001-00-00 +1001-01-01 +SELECT * FROM t1 WHERE a BETWEEN '0001-01-02' AND '1002-00-00'; +a +1001-00-00 +1001-01-01 +1002-00-00 +SELECT * FROM t1 WHERE a BETWEEN '0001-01-01' AND '1001-01-01'; +a +0001-01-01 +1001-00-00 +1001-01-01 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < '1001-01-01'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02 range a a 4 NULL 4 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= '1001-01-01'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02,p1001-01-01 range a a 4 NULL 5 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= '1001-01-01'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p2001-01-01,pNULL,p1001-01-01 range a a 4 NULL 3 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > '1001-01-01'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p2001-01-01,pNULL range a a 4 NULL 2 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = '1001-01-01'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p1001-01-01 system a NULL NULL NULL 1 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < '1001-00-00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02 range a a 4 NULL 3 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= '1001-00-00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02 range a a 4 NULL 4 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= '1001-00-00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p2001-01-01,pNULL,p1001-01-01 range a a 4 NULL 4 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > '1001-00-00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p2001-01-01,pNULL,p1001-01-01 range a a 4 NULL 3 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = '1001-00-00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 pNULL ref a a 4 const 1 Using index +# Disabling warnings for the invalid date +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < '1999-02-31'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02,p1001-01-01 range a a 4 NULL 6 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= '1999-02-31'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02,p1001-01-01 range a a 4 NULL 6 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= '1999-02-31'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p2001-01-01,pNULL range a a 4 NULL 2 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > '1999-02-31'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p2001-01-01,pNULL range a a 4 NULL 2 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = '1999-02-31'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 pNULL ref a a 4 const 1 Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a BETWEEN '0000-00-00' AND '1002-00-00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02,p1001-01-01 range a a 4 NULL 6 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a BETWEEN '0000-00-00' AND '1001-01-01'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02,p1001-01-01 range a a 4 NULL 5 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a BETWEEN '0001-01-02' AND '1002-00-00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 pNULL,p1001-01-01 range a a 4 NULL 3 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a BETWEEN '0001-01-01' AND '1001-01-01'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0001-01-01,pNULL,p1001-01-01 range a a 4 NULL 3 Using where; Using index +# test without index +ALTER TABLE t1 DROP KEY a; +SELECT * FROM t1 WHERE a < '1001-01-01'; +a +0000-00-00 +0000-01-02 +0001-01-01 +1001-00-00 +SELECT * FROM t1 WHERE a <= '1001-01-01'; +a +0000-00-00 +0000-01-02 +0001-01-01 +1001-00-00 +1001-01-01 +SELECT * FROM t1 WHERE a >= '1001-01-01'; +a +1001-01-01 +1002-00-00 +2001-01-01 +SELECT * FROM t1 WHERE a > '1001-01-01'; +a +1002-00-00 +2001-01-01 +SELECT * FROM t1 WHERE a = '1001-01-01'; +a +1001-01-01 +SELECT * FROM t1 WHERE a < '1001-00-00'; +a +0000-00-00 +0000-01-02 +0001-01-01 +SELECT * FROM t1 WHERE a <= '1001-00-00'; +a +0000-00-00 +0000-01-02 +0001-01-01 +1001-00-00 +SELECT * FROM t1 WHERE a >= '1001-00-00'; +a +1001-00-00 +1001-01-01 +1002-00-00 +2001-01-01 +SELECT * FROM t1 WHERE a > '1001-00-00'; +a +1001-01-01 +1002-00-00 +2001-01-01 +SELECT * FROM t1 WHERE a = '1001-00-00'; +a +1001-00-00 +# Disabling warnings for the invalid date +SELECT * FROM t1 WHERE a < '1999-02-31'; +a +0000-00-00 +0000-01-02 +0001-01-01 +1001-00-00 +1001-01-01 +1002-00-00 +SELECT * FROM t1 WHERE a <= '1999-02-31'; +a +0000-00-00 +0000-01-02 +0001-01-01 +1001-00-00 +1001-01-01 +1002-00-00 +SELECT * FROM t1 WHERE a >= '1999-02-31'; +a +2001-01-01 +SELECT * FROM t1 WHERE a > '1999-02-31'; +a +2001-01-01 +SELECT * FROM t1 WHERE a = '1999-02-31'; +a +SELECT * FROM t1 WHERE a BETWEEN '0000-00-00' AND '1002-00-00'; +a +0000-00-00 +0000-01-02 +0001-01-01 +1001-00-00 +1001-01-01 +1002-00-00 +SELECT * FROM t1 WHERE a BETWEEN '0000-00-00' AND '1001-01-01'; +a +0000-00-00 +0000-01-02 +0001-01-01 +1001-00-00 +1001-01-01 +SELECT * FROM t1 WHERE a BETWEEN '0001-01-02' AND '1002-00-00'; +a +1001-00-00 +1001-01-01 +1002-00-00 +SELECT * FROM t1 WHERE a BETWEEN '0001-01-01' AND '1001-01-01'; +a +0001-01-01 +1001-00-00 +1001-01-01 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < '1001-01-01'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02 ALL NULL NULL NULL NULL 5 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= '1001-01-01'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02,p1001-01-01 ALL NULL NULL NULL NULL 6 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= '1001-01-01'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p2001-01-01,pNULL,p1001-01-01 ALL NULL NULL NULL NULL 5 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > '1001-01-01'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p2001-01-01,pNULL ALL NULL NULL NULL NULL 4 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = '1001-01-01'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p1001-01-01 system NULL NULL NULL NULL 1 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < '1001-00-00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02 ALL NULL NULL NULL NULL 5 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= '1001-00-00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02 ALL NULL NULL NULL NULL 5 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= '1001-00-00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p2001-01-01,pNULL,p1001-01-01 ALL NULL NULL NULL NULL 5 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > '1001-00-00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p2001-01-01,pNULL,p1001-01-01 ALL NULL NULL NULL NULL 5 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = '1001-00-00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 pNULL ALL NULL NULL NULL NULL 3 Using where +# Disabling warnings for the invalid date +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a < '1999-02-31'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02,p1001-01-01 ALL NULL NULL NULL NULL 6 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a <= '1999-02-31'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02,p1001-01-01 ALL NULL NULL NULL NULL 6 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a >= '1999-02-31'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p2001-01-01,pNULL ALL NULL NULL NULL NULL 4 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a > '1999-02-31'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p2001-01-01,pNULL ALL NULL NULL NULL NULL 4 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a = '1999-02-31'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 pNULL ALL NULL NULL NULL NULL 3 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a BETWEEN '0000-00-00' AND '1002-00-00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02,p1001-01-01 ALL NULL NULL NULL NULL 6 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a BETWEEN '0000-00-00' AND '1001-01-01'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0001-01-01,pNULL,p0000-01-02,p1001-01-01 ALL NULL NULL NULL NULL 6 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a BETWEEN '0001-01-02' AND '1002-00-00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 pNULL,p1001-01-01 ALL NULL NULL NULL NULL 4 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE a BETWEEN '0001-01-01' AND '1001-01-01'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0001-01-01,pNULL,p1001-01-01 ALL NULL NULL NULL NULL 5 Using where +DROP TABLE t1; +# Test with DATETIME column NOT NULL +CREATE TABLE t1 ( +a int(10) unsigned NOT NULL, +b DATETIME NOT NULL, +PRIMARY KEY (a, b) +) PARTITION BY RANGE (TO_DAYS(b)) +(PARTITION p20090401 VALUES LESS THAN (TO_DAYS('2009-04-02')), +PARTITION p20090402 VALUES LESS THAN (TO_DAYS('2009-04-03')), +PARTITION p20090403 VALUES LESS THAN (TO_DAYS('2009-04-04')), +PARTITION p20090404 VALUES LESS THAN (TO_DAYS('2009-04-05')), +PARTITION p20090405 VALUES LESS THAN MAXVALUE); +INSERT INTO t1 VALUES (1, '2009-01-01'), (1, '2009-04-01'), (2, '2009-04-01'), +(1, '2009-04-02'), (2, '2009-04-02'), (1, '2009-04-02 23:59:59'), +(1, '2009-04-03'), (2, '2009-04-03'), (1, '2009-04-04'), (2, '2009-04-04'), +(1, '2009-04-05'), (1, '2009-04-06'), (1, '2009-04-07'); +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < CAST('2009-04-03' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402 index NULL PRIMARY 9 NULL 6 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= CAST('2009-04-03' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402,p20090403 index NULL PRIMARY 9 NULL 8 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = CAST('2009-04-03' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090403 index NULL PRIMARY 9 NULL 2 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= CAST('2009-04-03' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 9 NULL 10 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > CAST('2009-04-03' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 9 NULL 10 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b < CAST('2009-04-02 23:59:59' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402 index NULL PRIMARY 9 NULL 6 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b <= CAST('2009-04-02 23:59:59' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402 index NULL PRIMARY 9 NULL 6 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b = CAST('2009-04-02 23:59:59' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090402 index NULL PRIMARY 9 NULL 3 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b >= CAST('2009-04-02 23:59:59' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402,p20090403,p20090404,p20090405 index NULL PRIMARY 9 NULL 13 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b > CAST('2009-04-02 23:59:59' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 9 NULL 10 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < CAST('2009-04-03' AS DATE); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402 index NULL PRIMARY 9 NULL 6 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= CAST('2009-04-03' AS DATE); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402,p20090403 index NULL PRIMARY 9 NULL 8 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = CAST('2009-04-03' AS DATE); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090403 index NULL PRIMARY 9 NULL 2 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= CAST('2009-04-03' AS DATE); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 9 NULL 10 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > CAST('2009-04-03' AS DATE); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 9 NULL 10 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < '2009-04-03 00:00:00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402 index NULL PRIMARY 9 NULL 6 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= '2009-04-03 00:00:00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402,p20090403 index NULL PRIMARY 9 NULL 8 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = '2009-04-03 00:00:00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090403 index NULL PRIMARY 9 NULL 2 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= '2009-04-03 00:00:00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 9 NULL 10 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > '2009-04-03 00:00:00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 9 NULL 10 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < '2009-04-02 23:59:59'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402 index NULL PRIMARY 9 NULL 6 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= '2009-04-02 23:59:59'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402 index NULL PRIMARY 9 NULL 6 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = '2009-04-02 23:59:59'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090402 index NULL PRIMARY 9 NULL 3 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= '2009-04-02 23:59:59'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402,p20090403,p20090404,p20090405 index NULL PRIMARY 9 NULL 13 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > '2009-04-02 23:59:59'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 9 NULL 10 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < '2009-04-03'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402 index NULL PRIMARY 9 NULL 6 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= '2009-04-03'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402,p20090403 index NULL PRIMARY 9 NULL 8 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = '2009-04-03'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090403 index NULL PRIMARY 9 NULL 2 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= '2009-04-03'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 9 NULL 10 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > '2009-04-03'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 9 NULL 10 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b < CAST('2009-04-03 00:00:01' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402,p20090403 index NULL PRIMARY 9 NULL 8 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b <= CAST('2009-04-03 00:00:01' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402,p20090403 index NULL PRIMARY 9 NULL 8 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b = CAST('2009-04-03 00:00:01' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090403 index NULL PRIMARY 9 NULL 2 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b >= CAST('2009-04-03 00:00:01' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 9 NULL 10 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b > CAST('2009-04-03 00:00:01' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 9 NULL 10 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b < CAST('2009-04-02 23:59:58' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402 index NULL PRIMARY 9 NULL 6 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b <= CAST('2009-04-02 23:59:58' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402 index NULL PRIMARY 9 NULL 6 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b = CAST('2009-04-02 23:59:58' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090402 index NULL PRIMARY 9 NULL 3 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b >= CAST('2009-04-02 23:59:58' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402,p20090403,p20090404,p20090405 index NULL PRIMARY 9 NULL 13 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b > CAST('2009-04-02 23:59:58' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402,p20090403,p20090404,p20090405 index NULL PRIMARY 9 NULL 13 Using where; Using index +DROP TABLE t1; +# Test with DATE column NOT NULL +CREATE TABLE t1 ( +a int(10) unsigned NOT NULL, +b DATE NOT NULL, +PRIMARY KEY (a, b) +) PARTITION BY RANGE (TO_DAYS(b)) +(PARTITION p20090401 VALUES LESS THAN (TO_DAYS('2009-04-02')), +PARTITION p20090402 VALUES LESS THAN (TO_DAYS('2009-04-03')), +PARTITION p20090403 VALUES LESS THAN (TO_DAYS('2009-04-04')), +PARTITION p20090404 VALUES LESS THAN (TO_DAYS('2009-04-05')), +PARTITION p20090405 VALUES LESS THAN MAXVALUE); +INSERT INTO t1 VALUES (1, '2009-01-01'), (1, '2009-04-01'), (2, '2009-04-01'), +(1, '2009-04-02'), (2, '2009-04-02'), (1, '2009-04-03'), (2, '2009-04-03'), +(1, '2009-04-04'), (2, '2009-04-04'), (1, '2009-04-05'), (1, '2009-04-06'), +(1, '2009-04-07'); +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < CAST('2009-04-03' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402 index NULL PRIMARY 7 NULL 5 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= CAST('2009-04-03' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402,p20090403 index NULL PRIMARY 7 NULL 7 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = CAST('2009-04-03' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090403 index NULL PRIMARY 7 NULL 2 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= CAST('2009-04-03' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 7 NULL 10 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > CAST('2009-04-03' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090404,p20090405 index NULL PRIMARY 7 NULL 8 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b < CAST('2009-04-02 23:59:59' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402 index NULL PRIMARY 7 NULL 5 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b <= CAST('2009-04-02 23:59:59' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402 index NULL PRIMARY 7 NULL 5 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b = CAST('2009-04-02 23:59:59' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b >= CAST('2009-04-02 23:59:59' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 7 NULL 10 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b > CAST('2009-04-02 23:59:59' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 7 NULL 10 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < CAST('2009-04-03' AS DATE); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402 index NULL PRIMARY 7 NULL 5 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= CAST('2009-04-03' AS DATE); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402,p20090403 index NULL PRIMARY 7 NULL 7 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = CAST('2009-04-03' AS DATE); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090403 index NULL PRIMARY 7 NULL 2 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= CAST('2009-04-03' AS DATE); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 7 NULL 10 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > CAST('2009-04-03' AS DATE); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090404,p20090405 index NULL PRIMARY 7 NULL 8 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < '2009-04-03 00:00:00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402 index NULL PRIMARY 7 NULL 5 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= '2009-04-03 00:00:00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402,p20090403 index NULL PRIMARY 7 NULL 7 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = '2009-04-03 00:00:00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090403 index NULL PRIMARY 7 NULL 2 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= '2009-04-03 00:00:00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 7 NULL 10 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > '2009-04-03 00:00:00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090404,p20090405 index NULL PRIMARY 7 NULL 8 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < '2009-04-02 23:59:59'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402 index NULL PRIMARY 7 NULL 5 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= '2009-04-02 23:59:59'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402 index NULL PRIMARY 7 NULL 5 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = '2009-04-02 23:59:59'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= '2009-04-02 23:59:59'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 7 NULL 10 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > '2009-04-02 23:59:59'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 7 NULL 10 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < '2009-04-03'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402 index NULL PRIMARY 7 NULL 5 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= '2009-04-03'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402,p20090403 index NULL PRIMARY 7 NULL 7 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = '2009-04-03'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090403 index NULL PRIMARY 7 NULL 2 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= '2009-04-03'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 7 NULL 10 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > '2009-04-03'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090404,p20090405 index NULL PRIMARY 7 NULL 8 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b < CAST('2009-04-03 00:00:01' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402,p20090403 index NULL PRIMARY 7 NULL 7 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b <= CAST('2009-04-03 00:00:01' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402,p20090403 index NULL PRIMARY 7 NULL 7 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b = CAST('2009-04-03 00:00:01' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b >= CAST('2009-04-03 00:00:01' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090404,p20090405 index NULL PRIMARY 7 NULL 8 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b > CAST('2009-04-03 00:00:01' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090404,p20090405 index NULL PRIMARY 7 NULL 8 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b < CAST('2009-04-02 23:59:58' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402 index NULL PRIMARY 7 NULL 5 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b <= CAST('2009-04-02 23:59:58' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402 index NULL PRIMARY 7 NULL 5 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b = CAST('2009-04-02 23:59:58' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b >= CAST('2009-04-02 23:59:58' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 7 NULL 10 Using where; Using index +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b > CAST('2009-04-02 23:59:58' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 index NULL PRIMARY 7 NULL 10 Using where; Using index +DROP TABLE t1; +# Test with DATETIME column NULL +CREATE TABLE t1 ( +a int(10) unsigned NOT NULL, +b DATETIME NULL +) PARTITION BY RANGE (TO_DAYS(b)) +(PARTITION p20090401 VALUES LESS THAN (TO_DAYS('2009-04-02')), +PARTITION p20090402 VALUES LESS THAN (TO_DAYS('2009-04-03')), +PARTITION p20090403 VALUES LESS THAN (TO_DAYS('2009-04-04')), +PARTITION p20090404 VALUES LESS THAN (TO_DAYS('2009-04-05')), +PARTITION p20090405 VALUES LESS THAN MAXVALUE); +INSERT INTO t1 VALUES (1, '2009-01-01'), (1, '2009-04-01'), (2, '2009-04-01'), +(1, '2009-04-02'), (2, '2009-04-02'), (1, '2009-04-02 23:59:59'), +(1, '2009-04-03'), (2, '2009-04-03'), (1, '2009-04-04'), (2, '2009-04-04'), +(1, '2009-04-05'), (1, '2009-04-06'), (1, '2009-04-07'); +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < CAST('2009-04-03' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402 ALL NULL NULL NULL NULL 6 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= CAST('2009-04-03' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402,p20090403 ALL NULL NULL NULL NULL 8 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = CAST('2009-04-03' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090403 ALL NULL NULL NULL NULL 2 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= CAST('2009-04-03' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 10 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > CAST('2009-04-03' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 10 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b < CAST('2009-04-02 23:59:59' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402 ALL NULL NULL NULL NULL 6 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b <= CAST('2009-04-02 23:59:59' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402 ALL NULL NULL NULL NULL 6 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b = CAST('2009-04-02 23:59:59' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090402 ALL NULL NULL NULL NULL 3 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b >= CAST('2009-04-02 23:59:59' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 13 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b > CAST('2009-04-02 23:59:59' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 10 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < CAST('2009-04-03' AS DATE); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402 ALL NULL NULL NULL NULL 6 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= CAST('2009-04-03' AS DATE); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402,p20090403 ALL NULL NULL NULL NULL 8 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = CAST('2009-04-03' AS DATE); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090403 ALL NULL NULL NULL NULL 2 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= CAST('2009-04-03' AS DATE); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 10 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > CAST('2009-04-03' AS DATE); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 10 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < '2009-04-03 00:00:00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402 ALL NULL NULL NULL NULL 6 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= '2009-04-03 00:00:00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402,p20090403 ALL NULL NULL NULL NULL 8 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = '2009-04-03 00:00:00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090403 ALL NULL NULL NULL NULL 2 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= '2009-04-03 00:00:00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 10 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > '2009-04-03 00:00:00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 10 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < '2009-04-02 23:59:59'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402 ALL NULL NULL NULL NULL 6 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= '2009-04-02 23:59:59'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402 ALL NULL NULL NULL NULL 6 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = '2009-04-02 23:59:59'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090402 ALL NULL NULL NULL NULL 3 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= '2009-04-02 23:59:59'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 13 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > '2009-04-02 23:59:59'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 10 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < '2009-04-03'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402 ALL NULL NULL NULL NULL 6 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= '2009-04-03'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402,p20090403 ALL NULL NULL NULL NULL 8 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = '2009-04-03'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090403 ALL NULL NULL NULL NULL 2 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= '2009-04-03'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 10 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > '2009-04-03'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 10 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b < CAST('2009-04-03 00:00:01' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402,p20090403 ALL NULL NULL NULL NULL 8 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b <= CAST('2009-04-03 00:00:01' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402,p20090403 ALL NULL NULL NULL NULL 8 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b = CAST('2009-04-03 00:00:01' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090403 ALL NULL NULL NULL NULL 2 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b >= CAST('2009-04-03 00:00:01' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 10 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b > CAST('2009-04-03 00:00:01' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 10 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b < CAST('2009-04-02 23:59:58' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402 ALL NULL NULL NULL NULL 6 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b <= CAST('2009-04-02 23:59:58' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402 ALL NULL NULL NULL NULL 6 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b = CAST('2009-04-02 23:59:58' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090402 ALL NULL NULL NULL NULL 3 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b >= CAST('2009-04-02 23:59:58' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 13 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b > CAST('2009-04-02 23:59:58' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 13 Using where +DROP TABLE t1; +# Test with DATE column NULL +CREATE TABLE t1 ( +a int(10) unsigned NOT NULL, +b DATE NULL +) PARTITION BY RANGE (TO_DAYS(b)) +(PARTITION p20090401 VALUES LESS THAN (TO_DAYS('2009-04-02')), +PARTITION p20090402 VALUES LESS THAN (TO_DAYS('2009-04-03')), +PARTITION p20090403 VALUES LESS THAN (TO_DAYS('2009-04-04')), +PARTITION p20090404 VALUES LESS THAN (TO_DAYS('2009-04-05')), +PARTITION p20090405 VALUES LESS THAN MAXVALUE); +INSERT INTO t1 VALUES (1, '2009-01-01'), (1, '2009-04-01'), (2, '2009-04-01'), +(1, '2009-04-02'), (2, '2009-04-02'), (1, '2009-04-03'), (2, '2009-04-03'), +(1, '2009-04-04'), (2, '2009-04-04'), (1, '2009-04-05'), (1, '2009-04-06'), +(1, '2009-04-07'); +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < CAST('2009-04-03' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402 ALL NULL NULL NULL NULL 5 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= CAST('2009-04-03' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402,p20090403 ALL NULL NULL NULL NULL 7 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = CAST('2009-04-03' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090403 ALL NULL NULL NULL NULL 2 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= CAST('2009-04-03' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 10 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > CAST('2009-04-03' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090404,p20090405 ALL NULL NULL NULL NULL 8 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b < CAST('2009-04-02 23:59:59' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402 ALL NULL NULL NULL NULL 5 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b <= CAST('2009-04-02 23:59:59' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402 ALL NULL NULL NULL NULL 5 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b = CAST('2009-04-02 23:59:59' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b >= CAST('2009-04-02 23:59:59' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 10 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b > CAST('2009-04-02 23:59:59' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 10 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < CAST('2009-04-03' AS DATE); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402 ALL NULL NULL NULL NULL 5 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= CAST('2009-04-03' AS DATE); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402,p20090403 ALL NULL NULL NULL NULL 7 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = CAST('2009-04-03' AS DATE); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090403 ALL NULL NULL NULL NULL 2 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= CAST('2009-04-03' AS DATE); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 10 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > CAST('2009-04-03' AS DATE); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090404,p20090405 ALL NULL NULL NULL NULL 8 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < '2009-04-03 00:00:00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402 ALL NULL NULL NULL NULL 5 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= '2009-04-03 00:00:00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402,p20090403 ALL NULL NULL NULL NULL 7 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = '2009-04-03 00:00:00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090403 ALL NULL NULL NULL NULL 2 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= '2009-04-03 00:00:00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 10 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > '2009-04-03 00:00:00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090404,p20090405 ALL NULL NULL NULL NULL 8 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < '2009-04-02 23:59:59'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402 ALL NULL NULL NULL NULL 5 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= '2009-04-02 23:59:59'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402 ALL NULL NULL NULL NULL 5 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = '2009-04-02 23:59:59'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= '2009-04-02 23:59:59'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 10 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > '2009-04-02 23:59:59'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 10 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < '2009-04-03'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402 ALL NULL NULL NULL NULL 5 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= '2009-04-03'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402,p20090403 ALL NULL NULL NULL NULL 7 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = '2009-04-03'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090403 ALL NULL NULL NULL NULL 2 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= '2009-04-03'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 10 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > '2009-04-03'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090404,p20090405 ALL NULL NULL NULL NULL 8 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b < CAST('2009-04-03 00:00:01' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402,p20090403 ALL NULL NULL NULL NULL 7 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b <= CAST('2009-04-03 00:00:01' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402,p20090403 ALL NULL NULL NULL NULL 7 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b = CAST('2009-04-03 00:00:01' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b >= CAST('2009-04-03 00:00:01' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090404,p20090405 ALL NULL NULL NULL NULL 8 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b > CAST('2009-04-03 00:00:01' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090404,p20090405 ALL NULL NULL NULL NULL 8 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b < CAST('2009-04-02 23:59:58' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402 ALL NULL NULL NULL NULL 5 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b <= CAST('2009-04-02 23:59:58' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090402 ALL NULL NULL NULL NULL 5 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b = CAST('2009-04-02 23:59:58' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b >= CAST('2009-04-02 23:59:58' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 10 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 +WHERE b > CAST('2009-04-02 23:59:58' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p20090401,p20090403,p20090404,p20090405 ALL NULL NULL NULL NULL 10 Using where +DROP TABLE t1; +# For better code coverage of the patch +CREATE TABLE t1 ( +a int(10) unsigned NOT NULL, +b DATE +) PARTITION BY RANGE ( TO_DAYS(b) ) +(PARTITION p20090401 VALUES LESS THAN (TO_DAYS('2009-04-02')), +PARTITION p20090402 VALUES LESS THAN (TO_DAYS('2009-04-03')), +PARTITION p20090403 VALUES LESS THAN (TO_DAYS('2009-04-04')), +PARTITION p20090404 VALUES LESS THAN (TO_DAYS('2009-04-05')), +PARTITION p20090405 VALUES LESS THAN MAXVALUE); +INSERT INTO t1 VALUES (1, '2009-01-01'), (2, NULL); +# test with an invalid date, which lead to item->null_value is set. +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < CAST('2009-04-99' AS DATETIME); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +Warnings: +Warning 1292 Incorrect datetime value: '2009-04-99' +DROP TABLE t1; +CREATE TABLE t1 +(a INT NOT NULL AUTO_INCREMENT, +b DATETIME, +PRIMARY KEY (a,b), +KEY (b)) +PARTITION BY RANGE (to_days(b)) +(PARTITION p0 VALUES LESS THAN (733681) COMMENT = 'LESS THAN 2008-10-01', +PARTITION p1 VALUES LESS THAN (733712) COMMENT = 'LESS THAN 2008-11-01', +PARTITION pX VALUES LESS THAN MAXVALUE); +SELECT a,b FROM t1 WHERE b >= '2008-12-01' AND b < '2009-12-00'; +a b +DROP TABLE t1; +create table t1 ( a int not null) partition by hash(a) partitions 2; +insert into t1 values (1),(2),(3); +explain select * from t1 where a=5 and a=6; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE +drop table t1; +create table t1 ( +a int(11) not null +) partition by hash (a) partitions 2; +insert into t1 values (1),(2),(3); +explain partitions select * from t1 where a=1; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p1 ALL NULL NULL NULL NULL 2 Using where +explain partitions select * from t1 where a=2; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0 system NULL NULL NULL NULL 1 +explain partitions select * from t1 where a=1 or a=2; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0,p1 ALL NULL NULL NULL NULL 3 Using where +create table t2 ( +a int not null, +b int not null +) partition by key(a,b) partitions 2; +insert into t2 values (1,1),(2,2),(3,3); +explain partitions select * from t2 where a=1; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t2 p0,p1 ALL NULL NULL NULL NULL 3 Using where +explain partitions select * from t2 where b=1; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t2 p0,p1 ALL NULL NULL NULL NULL 3 Using where +explain partitions select * from t2 where a=1 and b=1; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t2 p0 ALL NULL NULL NULL NULL 2 Using where +create table t3 ( +a int +) +partition by range (a*1) ( +partition p0 values less than (10), +partition p1 values less than (20) +); +insert into t3 values (5),(15); +explain partitions select * from t3 where a=11; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +explain partitions select * from t3 where a=10; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +explain partitions select * from t3 where a=20; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +explain partitions select * from t3 where a=30; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +create table t4 (a int not null, b int not null) partition by LIST (a+b) ( +partition p0 values in (12), +partition p1 values in (14) +); +insert into t4 values (10,2), (10,4); +explain partitions select * from t4 where (a=10 and b=1) or (a=10 and b=2); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t4 p0 system NULL NULL NULL NULL 1 +explain partitions select * from t4 +where (a=10 and b=1) or (a=10 and b=2) or (a=10 and b = 3); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t4 p0 system NULL NULL NULL NULL 1 +explain partitions select * from t4 where (a=10 and b=2) or (a=10 and b=3) +or (a=10 and b = 4); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t4 p0,p1 ALL NULL NULL NULL NULL 2 Using where +explain partitions select * from t4 where (a=10 and b=1) or a=11; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t4 p0,p1 ALL NULL NULL NULL NULL 2 Using where +explain partitions select * from t4 where (a=10 and b=2) or a=11; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t4 p0,p1 ALL NULL NULL NULL NULL 2 Using where +drop table t1, t2, t3, t4; +create table t5 (a int not null, b int not null, +c int not null, d int not null) +partition by LIST(a+b) subpartition by HASH (c+d) subpartitions 2 +( +partition p0 values in (12), +partition p1 values in (14) +); +insert into t5 values (10,2,0,0), (10,4,0,0), (10,2,0,1), (10,4,0,1); +explain partitions select * from t5; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t5 p0_p0sp0,p0_p0sp1,p1_p1sp0,p1_p1sp1 ALL NULL NULL NULL NULL 4 +explain partitions select * from t5 +where (a=10 and b=1) or (a=10 and b=2) or (a=10 and b = 3); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t5 p0_p0sp0,p0_p0sp1 ALL NULL NULL NULL NULL 2 Using where +explain partitions select * from t5 where (a=10 and b=2) or (a=10 and b=3) +or (a=10 and b = 4); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t5 p0_p0sp0,p0_p0sp1,p1_p1sp0,p1_p1sp1 ALL NULL NULL NULL NULL 4 Using where +explain partitions select * from t5 where (c=1 and d=1); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t5 p0_p0sp0,p1_p1sp0 ALL NULL NULL NULL NULL 2 Using where +explain partitions select * from t5 where (c=2 and d=1); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t5 p0_p0sp1,p1_p1sp1 ALL NULL NULL NULL NULL 2 Using where +explain partitions select * from t5 where (a=10 and b=2 and c=1 and d=1) or +(c=2 and d=1); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t5 p0_p0sp0,p0_p0sp1,p1_p1sp1 ALL NULL NULL NULL NULL 3 Using where +explain partitions select * from t5 where (a=10 and b=2 and c=1 and d=1) or +(b=2 and c=2 and d=1); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t5 p0_p0sp0,p0_p0sp1,p1_p1sp1 ALL NULL NULL NULL NULL 3 Using where +create table t6 (a int not null) partition by LIST(a) ( +partition p1 values in (1), +partition p3 values in (3), +partition p5 values in (5), +partition p7 values in (7), +partition p9 values in (9) +); +insert into t6 values (1),(3),(5); +explain partitions select * from t6 where a < 1; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +explain partitions select * from t6 where a <= 1; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t6 p1 system NULL NULL NULL NULL 1 +explain partitions select * from t6 where a > 9; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +explain partitions select * from t6 where a >= 9; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +explain partitions select * from t6 where a > 0 and a < 5; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t6 p1,p3 ALL NULL NULL NULL NULL 2 Using where +explain partitions select * from t6 where a > 5 and a < 12; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +explain partitions select * from t6 where a > 3 and a < 8 ; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t6 p5,p7 system NULL NULL NULL NULL 1 +explain partitions select * from t6 where a >= 0 and a <= 5; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t6 p1,p3,p5 ALL NULL NULL NULL NULL 3 Using where +explain partitions select * from t6 where a >= 5 and a <= 12; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t6 p5,p7,p9 system NULL NULL NULL NULL 1 +explain partitions select * from t6 where a >= 3 and a <= 8; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t6 p3,p5,p7 ALL NULL NULL NULL NULL 2 Using where +explain partitions select * from t6 where a > 3 and a < 5; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +drop table t6; +create table t6 (a int unsigned not null) partition by LIST(a) ( +partition p1 values in (1), +partition p3 values in (3), +partition p5 values in (5), +partition p7 values in (7), +partition p9 values in (9) +); +insert into t6 values (1),(3),(5); +explain partitions select * from t6 where a < 1; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +explain partitions select * from t6 where a <= 1; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t6 p1 system NULL NULL NULL NULL 1 +explain partitions select * from t6 where a > 9; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +explain partitions select * from t6 where a >= 9; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +explain partitions select * from t6 where a > 0 and a < 5; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t6 p1,p3 ALL NULL NULL NULL NULL 2 Using where +explain partitions select * from t6 where a > 5 and a < 12; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +explain partitions select * from t6 where a > 3 and a < 8 ; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t6 p5,p7 system NULL NULL NULL NULL 1 +explain partitions select * from t6 where a >= 0 and a <= 5; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t6 p1,p3,p5 ALL NULL NULL NULL NULL 3 Using where +explain partitions select * from t6 where a >= 5 and a <= 12; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t6 p5,p7,p9 system NULL NULL NULL NULL 1 +explain partitions select * from t6 where a >= 3 and a <= 8; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t6 p3,p5,p7 ALL NULL NULL NULL NULL 2 Using where +explain partitions select * from t6 where a > 3 and a < 5; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +create table t7 (a int not null) partition by RANGE(a) ( +partition p10 values less than (10), +partition p30 values less than (30), +partition p50 values less than (50), +partition p70 values less than (70), +partition p90 values less than (90) +); +insert into t7 values (10),(30),(50); +explain partitions select * from t7 where a < 5; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +explain partitions select * from t7 where a < 9; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +explain partitions select * from t7 where a <= 9; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +explain partitions select * from t7 where a = 9; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +explain partitions select * from t7 where a >= 9; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t7 p10,p30,p50,p70,p90 ALL NULL NULL NULL NULL 3 Using where +explain partitions select * from t7 where a > 9; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t7 p30,p50,p70,p90 ALL NULL NULL NULL NULL 3 Using where +explain partitions select * from t7 where a < 10; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +explain partitions select * from t7 where a <= 10; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t7 p10,p30 system NULL NULL NULL NULL 1 +explain partitions select * from t7 where a = 10; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t7 p30 system NULL NULL NULL NULL 1 +explain partitions select * from t7 where a >= 10; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t7 p30,p50,p70,p90 ALL NULL NULL NULL NULL 3 Using where +explain partitions select * from t7 where a > 10; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t7 p30,p50,p70,p90 ALL NULL NULL NULL NULL 3 Using where +explain partitions select * from t7 where a < 89; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t7 p10,p30,p50,p70,p90 ALL NULL NULL NULL NULL 3 Using where +explain partitions select * from t7 where a <= 89; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t7 p10,p30,p50,p70,p90 ALL NULL NULL NULL NULL 3 Using where +explain partitions select * from t7 where a = 89; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +explain partitions select * from t7 where a > 89; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +explain partitions select * from t7 where a >= 89; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +explain partitions select * from t7 where a < 90; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t7 p10,p30,p50,p70,p90 ALL NULL NULL NULL NULL 3 Using where +explain partitions select * from t7 where a <= 90; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t7 p10,p30,p50,p70,p90 ALL NULL NULL NULL NULL 3 Using where +explain partitions select * from t7 where a = 90; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +explain partitions select * from t7 where a > 90; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +explain partitions select * from t7 where a >= 90; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +explain partitions select * from t7 where a > 91; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +explain partitions select * from t7 where a > 11 and a < 29; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +drop table t7; +create table t7 (a int unsigned not null) partition by RANGE(a) ( +partition p10 values less than (10), +partition p30 values less than (30), +partition p50 values less than (50), +partition p70 values less than (70), +partition p90 values less than (90) +); +insert into t7 values (10),(30),(50); +explain partitions select * from t7 where a < 5; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +explain partitions select * from t7 where a < 9; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +explain partitions select * from t7 where a <= 9; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +explain partitions select * from t7 where a = 9; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +explain partitions select * from t7 where a >= 9; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t7 p10,p30,p50,p70,p90 ALL NULL NULL NULL NULL 3 Using where +explain partitions select * from t7 where a > 9; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t7 p30,p50,p70,p90 ALL NULL NULL NULL NULL 3 Using where +explain partitions select * from t7 where a < 10; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +explain partitions select * from t7 where a <= 10; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t7 p10,p30 system NULL NULL NULL NULL 1 +explain partitions select * from t7 where a = 10; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t7 p30 system NULL NULL NULL NULL 1 +explain partitions select * from t7 where a >= 10; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t7 p30,p50,p70,p90 ALL NULL NULL NULL NULL 3 Using where +explain partitions select * from t7 where a > 10; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t7 p30,p50,p70,p90 ALL NULL NULL NULL NULL 3 Using where +explain partitions select * from t7 where a < 89; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t7 p10,p30,p50,p70,p90 ALL NULL NULL NULL NULL 3 Using where +explain partitions select * from t7 where a <= 89; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t7 p10,p30,p50,p70,p90 ALL NULL NULL NULL NULL 3 Using where +explain partitions select * from t7 where a = 89; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +explain partitions select * from t7 where a > 89; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +explain partitions select * from t7 where a >= 89; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +explain partitions select * from t7 where a < 90; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t7 p10,p30,p50,p70,p90 ALL NULL NULL NULL NULL 3 Using where +explain partitions select * from t7 where a <= 90; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t7 p10,p30,p50,p70,p90 ALL NULL NULL NULL NULL 3 Using where +explain partitions select * from t7 where a = 90; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +explain partitions select * from t7 where a > 90; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +explain partitions select * from t7 where a >= 90; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +explain partitions select * from t7 where a > 91; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +explain partitions select * from t7 where a > 11 and a < 29; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +create table t8 (a date not null) partition by RANGE(YEAR(a)) ( +partition p0 values less than (1980), +partition p1 values less than (1990), +partition p2 values less than (2000) +); +insert into t8 values ('1985-05-05'),('1995-05-05'); +explain partitions select * from t8 where a < '1980-02-02'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +create table t9 (a date not null) partition by RANGE(TO_DAYS(a)) ( +partition p0 values less than (732299), -- 2004-12-19 +partition p1 values less than (732468), -- 2005-06-06 +partition p2 values less than (732664) -- 2005-12-19 +); +insert into t9 values ('2005-05-05'), ('2005-04-04'); +explain partitions select * from t9 where a < '2004-12-19'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +explain partitions select * from t9 where a <= '2004-12-19'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t9 p0,p1 ALL NULL NULL NULL NULL 2 Using where +drop table t5,t6,t7,t8,t9; +create table t1 ( +a1 int not null +) +partition by range (a1) ( +partition p0 values less than (3), +partition p1 values less than (6), +partition p2 values less than (9) +); +insert into t1 values (1),(2),(3); +explain partitions select * from t1 where a1 > 3; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +explain partitions select * from t1 where a1 >= 3; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p1,p2 system NULL NULL NULL NULL 1 +explain partitions select * from t1 where a1 < 3 and a1 > 3; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +drop table t1; +create table t3 (a int, b int) +partition by list(a) subpartition by hash(b) subpartitions 4 ( +partition p0 values in (1), +partition p1 values in (2), +partition p2 values in (3), +partition p3 values in (4) +); +insert into t3 values (1,1),(2,2),(3,3); +explain partitions select * from t3 where a=2 or b=1; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t3 p0_p0sp1,p1_p1sp0,p1_p1sp1,p1_p1sp2,p1_p1sp3,p2_p2sp1,p3_p3sp1 ALL NULL NULL NULL NULL 2 Using where +explain partitions select * from t3 where a=4 or b=2; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t3 p0_p0sp2,p1_p1sp2,p2_p2sp2,p3_p3sp0,p3_p3sp1,p3_p3sp2,p3_p3sp3 system NULL NULL NULL NULL 1 +explain partitions select * from t3 where (a=2 or b=1) and (a=4 or b=2) ; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t3 p1_p1sp2,p3_p3sp1 system NULL NULL NULL NULL 1 +drop table t3; +create table t1 (a int) partition by hash(a) partitions 2; +insert into t1 values (1),(2); +explain partitions select * from t1 where a is null; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +explain partitions select * from t1 where a is not null; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0,p1 ALL NULL NULL NULL NULL 2 Using where +drop table t1; +create table t1 (a int not null, b int not null, key(a), key(b)) +partition by hash(a) partitions 4; +insert into t1 values (1,1),(2,2),(3,3),(4,4); +insert into t1 values (5,5),(6,6),(7,7),(8,8); +insert into t1 values (9,9),(10,10),(11,11),(12,12); +insert into t1 values (13,13),(14,14),(15,15),(16,16); +explain partitions +select * from t1 X, t1 Y +where X.b = Y.b and (X.a=1 or X.a=2) and (Y.a=2 or Y.a=3); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE X p1,p2 range a,b a 4 NULL 4 Using where +1 SIMPLE Y p2,p3 ref a,b b 4 test.X.b 2 Using where +explain partitions +select * from t1 X, t1 Y where X.a = Y.a and (X.a=1 or X.a=2); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE X p1,p2 range a a 4 NULL 4 Using where +1 SIMPLE Y p1,p2 ref a a 4 test.X.a 2 +drop table t1; +create table t1 (a int) partition by hash(a) partitions 20; +insert into t1 values (1),(2),(3); +explain partitions select * from t1 where a > 1 and a < 3; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p2 system NULL NULL NULL NULL 1 +explain partitions select * from t1 where a >= 1 and a < 3; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p1,p2 ALL NULL NULL NULL NULL 2 Using where +explain partitions select * from t1 where a > 1 and a <= 3; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p2,p3 ALL NULL NULL NULL NULL 2 Using where +explain partitions select * from t1 where a >= 1 and a <= 3; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p1,p2,p3 ALL NULL NULL NULL NULL 3 Using where +drop table t1; +create table t1 (a int, b int) +partition by list(a) subpartition by hash(b) subpartitions 20 +( +partition p0 values in (0), +partition p1 values in (1), +partition p2 values in (2), +partition p3 values in (3) +); +insert into t1 values (1,1),(2,2),(3,3); +explain partitions select * from t1 where b > 1 and b < 3; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0_p0sp2,p1_p1sp2,p2_p2sp2,p3_p3sp2 system NULL NULL NULL NULL 1 +explain partitions select * from t1 where b > 1 and b < 3 and (a =1 or a =2); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p1_p1sp2,p2_p2sp2 system NULL NULL NULL NULL 1 +drop table t1; +create table t1 (a int) partition by list(a) ( +partition p0 values in (1,2), +partition p1 values in (3,4) +); +insert into t1 values (1),(1),(2),(2),(3),(4),(3),(4); +flush status; +update t1 set a=100 where a=5; +show status like 'Handler_read_rnd_next'; +Variable_name Value +Handler_read_rnd_next 0 +flush status; +update t1 set a=100 where a+1=5+1; +show status like 'Handler_read_rnd_next'; +Variable_name Value +Handler_read_rnd_next 10 +flush status; +delete from t1 where a=5; +show status like 'Handler_read_rnd_next'; +Variable_name Value +Handler_read_rnd_next 0 +flush status; +delete from t1 where a+1=5+1; +show status like 'Handler_read_rnd_next'; +Variable_name Value +Handler_read_rnd_next 10 +create table t2 like t1; +insert into t2 select * from t2; +flush status; +update t1,t2 set t1.a=1000, t2.a=1000 where t1.a=5 and t2.a=5; +show status like 'Handler_read_rnd_next'; +Variable_name Value +Handler_read_rnd_next 0 +flush status; +delete t1,t2 from t1, t2 where t1.a=5 and t2.a=5; +show status like 'Handler_read_rnd_next'; +Variable_name Value +Handler_read_rnd_next 0 +drop table t1,t2; +CREATE TABLE `t1` ( +`a` int(11) default NULL +); +INSERT INTO t1 VALUES (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +CREATE TABLE `t2` ( +`a` int(11) default NULL, +KEY `a` (`a`) +) ; +insert into t2 select A.a + 10*(B.a + 10* C.a) from t1 A, t1 B, t1 C ; +insert into t1 select a from t2; +drop table t2; +CREATE TABLE `t2` ( +`a` int(11) default NULL, +`b` int(11) default NULL +) +PARTITION BY RANGE (a) ( +PARTITION p0 VALUES LESS THAN (200), +PARTITION p1 VALUES LESS THAN (400), +PARTITION p2 VALUES LESS THAN (600), +PARTITION p3 VALUES LESS THAN (800), +PARTITION p4 VALUES LESS THAN (1001)); +insert into t2 select a,1 from t1 where a < 200; +insert into t2 select a,2 from t1 where a >= 200 and a < 400; +insert into t2 select a,3 from t1 where a >= 400 and a < 600; +insert into t2 select a,4 from t1 where a >= 600 and a < 800; +insert into t2 select a,5 from t1 where a >= 800 and a < 1001; +explain partitions select * from t2; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t2 p0,p1,p2,p3,p4 ALL NULL NULL NULL NULL 1010 +explain partitions select * from t2 where a < 801 and a > 200; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t2 p1,p2,p3,p4 ALL NULL NULL NULL NULL 800 Using where +explain partitions select * from t2 where a < 801 and a > 800; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t2 p4 ALL NULL NULL NULL NULL 200 Using where +explain partitions select * from t2 where a > 600; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t2 p3,p4 ALL NULL NULL NULL NULL 400 Using where +explain partitions select * from t2 where a > 600 and b = 1; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t2 p3,p4 ALL NULL NULL NULL NULL 400 Using where +explain partitions select * from t2 where a > 600 and b = 4; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t2 p3,p4 ALL NULL NULL NULL NULL 400 Using where +explain partitions select * from t2 where a > 600 and b = 5; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t2 p3,p4 ALL NULL NULL NULL NULL 400 Using where +explain partitions select * from t2 where b = 5; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t2 p0,p1,p2,p3,p4 ALL NULL NULL NULL NULL 1010 Using where +flush status; +update t2 set b = 100 where b = 6; +show status like 'Handler_read_rnd_next'; +Variable_name Value +Handler_read_rnd_next 1015 +flush status; +update t2 set a = 1002 where a = 1001; +show status like 'Handler_read_rnd_next'; +Variable_name Value +Handler_read_rnd_next 0 +flush status; +update t2 set b = 6 where a = 600; +show status like 'Handler_read_rnd_next'; +Variable_name Value +Handler_read_rnd_next 201 +flush status; +update t2 set b = 6 where a > 600 and a < 800; +show status like 'Handler_read_rnd_next'; +Variable_name Value +Handler_read_rnd_next 201 +flush status; +delete from t2 where a > 600; +show status like 'Handler_read_rnd_next'; +Variable_name Value +Handler_read_rnd_next 402 +drop table t2; +CREATE TABLE `t2` ( +`a` int(11) default NULL, +`b` int(11) default NULL, +index (b) +) +PARTITION BY RANGE (a) ( +PARTITION p0 VALUES LESS THAN (200), +PARTITION p1 VALUES LESS THAN (400), +PARTITION p2 VALUES LESS THAN (600), +PARTITION p3 VALUES LESS THAN (800), +PARTITION p4 VALUES LESS THAN (1001)); +insert into t2 select a,1 from t1 where a < 100; +insert into t2 select a,2 from t1 where a >= 200 and a < 300; +insert into t2 select a,3 from t1 where a >= 300 and a < 400; +insert into t2 select a,4 from t1 where a >= 400 and a < 500; +insert into t2 select a,5 from t1 where a >= 500 and a < 600; +insert into t2 select a,6 from t1 where a >= 600 and a < 700; +insert into t2 select a,7 from t1 where a >= 700 and a < 800; +insert into t2 select a,8 from t1 where a >= 800 and a < 900; +insert into t2 select a,9 from t1 where a >= 900 and a < 1001; +explain partitions select * from t2; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t2 p0,p1,p2,p3,p4 ALL NULL NULL NULL NULL 910 +explain partitions select * from t2 where a = 101; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t2 p0 ALL NULL NULL NULL NULL 110 Using where +explain partitions select * from t2 where a = 550; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t2 p2 ALL NULL NULL NULL NULL 200 Using where +explain partitions select * from t2 where a = 833; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t2 p4 ALL NULL NULL NULL NULL 200 Using where +explain partitions select * from t2 where (a = 100 OR a = 900); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t2 p0,p4 ALL NULL NULL NULL NULL 310 Using where +explain partitions select * from t2 where (a > 100 AND a < 600); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t2 p0,p1,p2 ALL NULL NULL NULL NULL 510 Using where +explain partitions select * from t2 where b = 4; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t2 p0,p1,p2,p3,p4 ref b b 5 const 77 +explain extended select * from t2 where b = 6; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t2 ref b b 5 const 77 100.00 +Warnings: +Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` where `test`.`t2`.`b` = 6 +explain partitions select * from t2 where b = 6; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t2 p0,p1,p2,p3,p4 ref b b 5 const 77 +explain extended select * from t2 where b in (1,3,5); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t2 ALL b NULL NULL NULL 910 40.66 Using where +Warnings: +Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` where `test`.`t2`.`b` in (1,3,5) +explain partitions select * from t2 where b in (1,3,5); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t2 p0,p1,p2,p3,p4 ALL b NULL NULL NULL 910 Using where +explain extended select * from t2 where b in (2,4,6); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t2 ALL b NULL NULL NULL 910 25.38 Using where +Warnings: +Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` where `test`.`t2`.`b` in (2,4,6) +explain partitions select * from t2 where b in (2,4,6); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t2 p0,p1,p2,p3,p4 ALL b NULL NULL NULL 910 Using where +explain extended select * from t2 where b in (7,8,9); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t2 ALL b NULL NULL NULL 910 36.81 Using where +Warnings: +Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` where `test`.`t2`.`b` in (7,8,9) +explain partitions select * from t2 where b in (7,8,9); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t2 p0,p1,p2,p3,p4 ALL b NULL NULL NULL 910 Using where +explain extended select * from t2 where b > 5; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t2 ALL b NULL NULL NULL 910 44.62 Using where +Warnings: +Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` where `test`.`t2`.`b` > 5 +explain partitions select * from t2 where b > 5; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t2 p0,p1,p2,p3,p4 ALL b NULL NULL NULL 910 Using where +explain extended select * from t2 where b > 5 and b < 8; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t2 ALL b NULL NULL NULL 910 22.20 Using where +Warnings: +Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` where `test`.`t2`.`b` > 5 and `test`.`t2`.`b` < 8 +explain partitions select * from t2 where b > 5 and b < 8; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t2 p0,p1,p2,p3,p4 ALL b NULL NULL NULL 910 Using where +explain extended select * from t2 where b > 5 and b < 7; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t2 range b b 5 NULL 77 100.00 Using where +Warnings: +Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` where `test`.`t2`.`b` > 5 and `test`.`t2`.`b` < 7 +explain partitions select * from t2 where b > 5 and b < 7; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t2 p0,p1,p2,p3,p4 range b b 5 NULL 77 Using where +explain extended select * from t2 where b > 0 and b < 5; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t2 ALL b NULL NULL NULL 910 41.87 Using where +Warnings: +Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` where `test`.`t2`.`b` > 0 and `test`.`t2`.`b` < 5 +explain partitions select * from t2 where b > 0 and b < 5; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t2 p0,p1,p2,p3,p4 ALL b NULL NULL NULL 910 Using where +flush status; +update t2 set a = 111 where b = 10; +show status like 'Handler_read_rnd_next'; +Variable_name Value +Handler_read_rnd_next 0 +show status like 'Handler_read_key'; +Variable_name Value +Handler_read_key 5 +flush status; +update t2 set a = 111 where b in (5,6); +show status like 'Handler_read_rnd_next'; +Variable_name Value +Handler_read_rnd_next 915 +show status like 'Handler_read_key'; +Variable_name Value +Handler_read_key 0 +flush status; +update t2 set a = 222 where b = 7; +show status like 'Handler_read_rnd_next'; +Variable_name Value +Handler_read_rnd_next 0 +show status like 'Handler_read_key'; +Variable_name Value +Handler_read_key 5 +flush status; +delete from t2 where b = 7; +show status like 'Handler_read_rnd_next'; +Variable_name Value +Handler_read_rnd_next 0 +show status like 'Handler_read_key'; +Variable_name Value +Handler_read_key 5 +flush status; +delete from t2 where b > 5; +show status like 'Handler_read_rnd_next'; +Variable_name Value +Handler_read_rnd_next 815 +show status like 'Handler_read_rnd_deleted'; +Variable_name Value +Handler_read_rnd_deleted 400 +show status like 'Handler_read_key'; +Variable_name Value +Handler_read_key 0 +show status like 'Handler_read_prev'; +Variable_name Value +Handler_read_prev 0 +show status like 'Handler_read_next'; +Variable_name Value +Handler_read_next 0 +flush status; +delete from t2 where b < 5 or b > 3; +show status like 'Handler_read_rnd_next'; +Variable_name Value +Handler_read_rnd_next 515 +show status like 'Handler_read_rnd_deleted'; +Variable_name Value +Handler_read_rnd_deleted 700 +show status like 'Handler_read_key'; +Variable_name Value +Handler_read_key 0 +show status like 'Handler_read_prev'; +Variable_name Value +Handler_read_prev 0 +show status like 'Handler_read_next'; +Variable_name Value +Handler_read_next 0 +drop table t1, t2; +create table t1 ( f_int1 mediumint, f_int2 integer) +partition by list(mod(f_int1,4)) ( +partition p_3 values in (-3), +partition p_2 values in (-2), +partition p_1 values in (-1), +partition p0 values in (0), +partition p1 values in (1), +partition p2 values in (2), +partition p3 values in (3) +); +insert into t1 values (9, 9), (8, 8), (7, 7), (6, 6), (5, 5), +(4, 4), (3, 3), (2, 2), (1, 1); +select * from t1 where f_int1 between 5 and 15 order by f_int1; +f_int1 f_int2 +5 5 +6 6 +7 7 +8 8 +9 9 +drop table t1; +create table t1 (f_int1 integer) partition by list(abs(mod(f_int1,2))) +subpartition by hash(f_int1) subpartitions 2 +( +partition part1 values in (0), +partition part2 values in (1), +partition part4 values in (null) +); +insert into t1 set f_int1 = null; +select * from t1 where f_int1 is null; +f_int1 +NULL +explain partitions select * from t1 where f_int1 is null; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 part4_part4sp0 system NULL NULL NULL NULL 1 +drop table t1; +create table t1 (a int not null, b int not null) +partition by list(a) +subpartition by hash(b) subpartitions 4 +( +partition p0 values in (1), +partition p1 values in (2), +partition p2 values in (3) +); +insert into t1 values (1,1),(1,2),(1,3),(1,4), +(2,1),(2,2),(2,3),(2,4); +explain partitions select * from t1 where a=1 AND (b=1 OR b=2); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0_p0sp1,p0_p0sp2 ALL NULL NULL NULL NULL 2 Using where +drop table t1; +create table t1 (a int, b int not null) +partition by list(a) +subpartition by hash(b) subpartitions 2 +( +partition p0 values in (1), +partition p1 values in (2), +partition p2 values in (3), +partition pn values in (NULL) +); +insert into t1 values (1,1),(1,2),(1,3),(1,4), +(2,1),(2,2),(2,3),(2,4), (NULL,1); +explain partitions select * from t1 where a IS NULL AND (b=1 OR b=2); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 pn_pnsp0,pn_pnsp1 system NULL NULL NULL NULL 1 +explain partitions select * from t1 where (a IS NULL or a < 1) AND (b=1 OR b=2); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 pn_pnsp0,pn_pnsp1 system NULL NULL NULL NULL 1 +explain partitions select * from t1 where (a IS NULL or a < 2) AND (b=1 OR b=2); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0_p0sp0,p0_p0sp1,pn_pnsp0,pn_pnsp1 ALL NULL NULL NULL NULL 5 Using where +explain partitions select * from t1 where (a IS NULL or a <= 1) AND (b=1 OR b=2); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0_p0sp0,p0_p0sp1,pn_pnsp0,pn_pnsp1 ALL NULL NULL NULL NULL 5 Using where +drop table t1; +create table t1 ( a int) partition by list (MOD(a, 10)) +( partition p0 values in (0), partition p1 values in (1), +partition p2 values in (2), partition p3 values in (3), +partition p4 values in (4), partition p5 values in (5), +partition p6 values in (6), partition pn values in (NULL) +); +insert into t1 values (NULL), (0),(1),(2),(3),(4),(5),(6); +explain partitions select * from t1 where a is null or a < 2; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0,p1,p2,p3,p4,p5,p6,pn ALL NULL NULL NULL NULL 8 Using where +drop table t1; +create table t1 (s1 int) partition by list (s1) +(partition p1 values in (0), +partition p2 values in (1), +partition p3 values in (null)); +insert into t1 values (0),(1),(null); +select count(*) from t1 where s1 < 0 or s1 is null; +count(*) +1 +explain partitions select count(*) from t1 where s1 < 0 or s1 is null; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p3 system NULL NULL NULL NULL 1 +drop table t1; +create table t1 (a char(32) primary key) +partition by key() +partitions 100; +insert into t1 values ('na'); +select * from t1; +a +na +select * from t1 where a like 'n%'; +a +na +drop table t1; +create table t1 (s1 varchar(15)) partition by key (s1); +select * from t1 where s1 = 0 or s1 is null; +s1 +insert into t1 values ('aa'),('bb'),('0'); +explain partitions select * from t1 where s1 = 0 or s1 is null; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0 ALL NULL NULL NULL NULL 3 Using where +drop table t1; +create table t2 (a int, b int) +partition by LIST(a) +subpartition by HASH(b) subpartitions 40 +( partition p_0_long_partition_name values in(1), +partition p_1_long_partition_name values in(2)); +insert into t2 values (1,1),(2,2); +explain partitions select * from t2; +id 1 +select_type SIMPLE +table t2 +partitions p_0_long_partition_name_p_0_long_partition_namesp0,p_0_long_partition_name_p_0_long_partition_namesp1,p_0_long_partition_name_p_0_long_partition_namesp2,p_0_long_partition_name_p_0_long_partition_namesp3,p_0_long_partition_name_p_0_long_partition_namesp4,p_0_long_partition_name_p_0_long_partition_namesp5,p_0_long_partition_name_p_0_long_partition_namesp6,p_0_long_partition_name_p_0_long_partition_namesp7,p_0_long_partition_name_p_0_long_partition_namesp8,p_0_long_partition_name_p_0_long_partition_namesp9,p_0_long_partition_name_p_0_long_partition_namesp10,p_0_long_partition_name_p_0_long_partition_namesp11,p_0_long_partition_name_p_0_long_partition_namesp12,p_0_long_partition_name_p_0_long_partition_namesp13,p_0_long_partition_name_p_0_long_partition_namesp14,p_0_long_partition_name_p_0_long_partition_namesp15,p_0_long_partition_name_p_0_long_partition_namesp16,p_0_long_partition_name_p_0_long_partition_namesp17,p_0_long_partition_name_p_0_long_partition_namesp18,p_0_long_partition_name_p_0_long_partition_namesp19,p_0_long_partition_name_p_0_long_partition_namesp20,p_0_long_partition_name_p_0_long_partition_namesp21,p_0_long_partition_name_p_0_long_partition_namesp22,p_0_long_partition_name_p_0_long_partition_namesp23,p_0_long_partition_name_p_0_long_partition_namesp24,p_0_long_partition_name_p_0_long_partition_namesp25,p_0_long_partition_name_p_0_long_partition_namesp26,p_0_long_partition_name_p_0_long_partition_namesp27,p_0_long_partition_name_p_0_long_partition_namesp28,p_0_long_partition_name_p_0_long_partition_namesp29,p_0_long_partition_name_p_0_long_partition_namesp30,p_0_long_partition_name_p_0_long_partition_namesp31,p_0_long_partition_name_p_0_long_partition_namesp32,p_0_long_partition_name_p_0_long_partition_namesp33,p_0_long_partition_name_p_0_long_partition_namesp34,p_0_long_partition_name_p_0_long_partition_namesp35,p_0_long_partition_name_p_0_long_partition_namesp36,p_0_long_partition_name_p_0_long_partition_namesp37,p_0_long_partition_name_p_0_long_partition_namesp38,p_0_long_partition_name_p_0_long_partition_namesp39,p_1_long_partition_name_p_1_long_partition_namesp0,p_1_long_partition_name_p_1_long_partition_namesp1,p_1_long_partition_name_p_1_long_partition_namesp2,p_1_long_partition_name_p_1_long_partition_namesp3,p_1_long_partition_name_p_1_long_partition_namesp4,p_1_long_partition_name_p_1_long_partition_namesp5,p_1_long_partition_name_p_1_long_partition_namesp6,p_1_long_partition_name_p_1_long_partition_namesp7,p_1_long_partition_name_p_1_long_partition_namesp8,p_1_long_partition_name_p_1_long_partition_namesp9,p_1_long_partition_name_p_1_long_partition_namesp10,p_1_long_partition_name_p_1_long_partition_namesp11,p_1_long_partition_name_p_1_long_partition_namesp12,p_1_long_partition_name_p_1_long_partition_namesp13,p_1_long_partition_name_p_1_long_partition_namesp14,p_1_long_partition_name_p_1_long_partition_namesp15,p_1_long_partition_name_p_1_long_partition_namesp16,p_1_long_partition_name_p_1_long_partition_namesp17,p_1_long_partition_name_p_1_long_partition_namesp18,p_1_long_partition_name_p_1_long_partition_namesp19,p_1_long_partition_name_p_1_long_partition_namesp20,p_1_long_partition_name_p_1_long_partition_namesp21,p_1_long_partition_name_p_1_long_partition_namesp22,p_1_long_partition_name_p_1_long_partition_namesp23,p_1_long_partition_name_p_1_long_partition_namesp24,p_1_long_partition_name_p_1_long_partition_namesp25,p_1_long_partition_name_p_1_long_partition_namesp26,p_1_long_partition_name_p_1_long_partition_namesp27,p_1_long_partition_name_p_1_long_partition_namesp28,p_1_long_partition_name_p_1_long_partition_namesp29,p_1_long_partition_name_p_1_long_partition_namesp30,p_1_long_partition_name_p_1_long_partition_namesp31,p_1_long_partition_name_p_1_long_partition_namesp32,p_1_long_partition_name_p_1_long_partition_namesp33,p_1_long_partition_name_p_1_long_partition_namesp34,p_1_long_partition_name_p_1_long_partition_namesp35,p_1_long_partition_name_p_1_long_partition_namesp36,p_1_long_partition_name_p_1_long_partition_namesp37,p_1_long_partition_name_p_1_long_partition_namesp38,p_1_long_partition_name_p_1_long_partition_namesp39 +type ALL +possible_keys NULL +key NULL +key_len NULL +ref NULL +rows 2 +Extra +drop table t2; +create table t1 (s1 int); +explain partitions select 1 from t1 union all select 2; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 PRIMARY t1 NULL system NULL NULL NULL NULL 0 Const row not found +2 UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used +drop table t1; +create table t1 (a bigint unsigned not null) partition by range(a) ( +partition p0 values less than (10), +partition p1 values less than (100), +partition p2 values less than (1000), +partition p3 values less than (18446744073709551000), +partition p4 values less than (18446744073709551614) +); +insert into t1 values (5),(15),(105),(1005); +insert into t1 values (18446744073709551000+1); +insert into t1 values (18446744073709551614-1); +explain partitions select * from t1 where a < 10; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0 system NULL NULL NULL NULL 1 +explain partitions select * from t1 +where a >= 18446744073709551000-1 and a <= 18446744073709551000+1; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p3,p4 ALL NULL NULL NULL NULL 3 Using where +explain partitions select * from t1 +where a between 18446744073709551001 and 18446744073709551002; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p4 ALL NULL NULL NULL NULL 2 Using where +explain partitions select * from t1 where a = 18446744073709551000; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p4 ALL NULL NULL NULL NULL 2 Using where +explain partitions select * from t1 where a = 18446744073709551613; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p4 ALL NULL NULL NULL NULL 2 Using where +explain partitions select * from t1 where a = 18446744073709551614; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +drop table t1; +create table t1 (a int) +partition by range(a) ( +partition p0 values less than (64), +partition p1 values less than (128), +partition p2 values less than (255) +); +create table t2 (a int) +partition by range(a+0) ( +partition p0 values less than (64), +partition p1 values less than (128), +partition p2 values less than (255) +); +insert into t1 values (0x20), (0x20), (0x41), (0x41), (0xFE), (0xFE); +insert into t2 values (0x20), (0x20), (0x41), (0x41), (0xFE), (0xFE); +explain partitions select * from t1 where a=0; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0 ALL NULL NULL NULL NULL 2 Using where +explain partitions select * from t2 where a=0; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t2 p0 ALL NULL NULL NULL NULL 2 Using where +explain partitions select * from t1 where a=0xFE; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p2 ALL NULL NULL NULL NULL 2 Using where +explain partitions select * from t2 where a=0xFE; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t2 p2 ALL NULL NULL NULL NULL 2 Using where +explain partitions select * from t1 where a > 0xFE AND a <= 0xFF; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +explain partitions select * from t2 where a > 0xFE AND a <= 0xFF; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +explain partitions select * from t1 where a >= 0xFE AND a <= 0xFF; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p2 ALL NULL NULL NULL NULL 2 Using where +explain partitions select * from t2 where a >= 0xFE AND a <= 0xFF; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t2 p2 ALL NULL NULL NULL NULL 2 Using where +explain partitions select * from t1 where a < 64 AND a >= 63; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0 ALL NULL NULL NULL NULL 2 Using where +explain partitions select * from t2 where a < 64 AND a >= 63; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t2 p0 ALL NULL NULL NULL NULL 2 Using where +explain partitions select * from t1 where a <= 64 AND a >= 63; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0,p1 ALL NULL NULL NULL NULL 4 Using where +explain partitions select * from t2 where a <= 64 AND a >= 63; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t2 p0,p1 ALL NULL NULL NULL NULL 4 Using where +drop table t1; +drop table t2; +create table t1(a bigint unsigned not null) partition by range(a+0) ( +partition p1 values less than (10), +partition p2 values less than (20), +partition p3 values less than (2305561538531885056), +partition p4 values less than (2305561538531950591) +); +insert into t1 values (9),(19),(0xFFFF0000FFFF000-1), (0xFFFF0000FFFFFFF-1); +insert into t1 values (9),(19),(0xFFFF0000FFFF000-1), (0xFFFF0000FFFFFFF-1); +explain partitions select * from t1 where +a >= 2305561538531885056-10 and a <= 2305561538531885056-8; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p3 ALL NULL NULL NULL NULL 4 Using where +explain partitions select * from t1 where +a > 0xFFFFFFFFFFFFFFEC and a < 0xFFFFFFFFFFFFFFEE; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +explain partitions select * from t1 where a>=0 and a <= 0xFFFFFFFFFFFFFFFF; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p1,p2,p3,p4 ALL NULL NULL NULL NULL 8 Using where +drop table t1; +create table t1 (a bigint) partition by range(a+0) ( +partition p1 values less than (-1000), +partition p2 values less than (-10), +partition p3 values less than (10), +partition p4 values less than (1000) +); +insert into t1 values (-15),(-5),(5),(15),(-15),(-5),(5),(15); +explain partitions select * from t1 where a>-2 and a <=0; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p3 ALL NULL NULL NULL NULL 4 Using where +drop table t1; +CREATE TABLE t1 ( recdate DATETIME NOT NULL ) +PARTITION BY RANGE( TO_DAYS(recdate) ) ( +PARTITION p0 VALUES LESS THAN ( TO_DAYS('2007-03-08') ), +PARTITION p1 VALUES LESS THAN ( TO_DAYS('2007-04-01') ) +); +INSERT INTO t1 VALUES ('2007-03-01 12:00:00'); +INSERT INTO t1 VALUES ('2007-03-07 12:00:00'); +INSERT INTO t1 VALUES ('2007-03-08 12:00:00'); +INSERT INTO t1 VALUES ('2007-03-15 12:00:00'); +must use p0 only: +explain partitions select * from t1 where recdate < '2007-03-08 00:00:00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0 ALL NULL NULL NULL NULL 2 Using where +drop table t1; +CREATE TABLE t1 ( recdate DATETIME NOT NULL ) +PARTITION BY RANGE( YEAR(recdate) ) ( +PARTITION p0 VALUES LESS THAN (2006), +PARTITION p1 VALUES LESS THAN (2007) +); +INSERT INTO t1 VALUES ('2005-03-01 12:00:00'); +INSERT INTO t1 VALUES ('2005-03-01 12:00:00'); +INSERT INTO t1 VALUES ('2006-03-01 12:00:00'); +INSERT INTO t1 VALUES ('2006-03-01 12:00:00'); +must use p0 only: +explain partitions select * from t1 where recdate < '2006-01-01 00:00:00'; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0 ALL NULL NULL NULL NULL 2 Using where +drop table t1; +# +# BUG#33730 Full table scan instead selected partitions for query more than 10 partitions +# +create table t0 (a int); +insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +create table t1 (a int) +partition by range(a+0) ( +partition p0 values less than (64), +partition p1 values less than (128), +partition p2 values less than (255) +); +insert into t1 select A.a + 10*B.a from t0 A, t0 B; +explain partitions select * from t1 where a between 10 and 13; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0 ALL NULL NULL NULL NULL 64 Using where +explain partitions select * from t1 where a between 10 and 10+33; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p0,p1,p2 ALL NULL NULL NULL NULL 100 Using where +drop table t0, t1; +# +# Bug#71095: Wrong results with PARTITION BY LIST COLUMNS() +# +CREATE TABLE t1 +(c1 int, +c2 int, +c3 int, +c4 int, +PRIMARY KEY (c1,c2)) +PARTITION BY LIST COLUMNS (c2) +(PARTITION p1 VALUES IN (1,2), +PARTITION p2 VALUES IN (3,4)); +INSERT INTO t1 VALUES (1, 1, 1, 1), (2, 3, 1, 1); +INSERT INTO t1 VALUES (1, 2, 1, 1), (2, 4, 1, 1); +SELECT * FROM t1 WHERE c1 = 1 AND c2 < 1; +c1 c2 c3 c4 +SELECT * FROM t1 WHERE c1 = 1 AND c2 <= 1; +c1 c2 c3 c4 +1 1 1 1 +SELECT * FROM t1 WHERE c1 = 1 AND c2 = 1; +c1 c2 c3 c4 +1 1 1 1 +SELECT * FROM t1 WHERE c1 = 1 AND c2 >= 1; +c1 c2 c3 c4 +1 1 1 1 +1 2 1 1 +SELECT * FROM t1 WHERE c1 = 1 AND c2 > 1; +c1 c2 c3 c4 +1 2 1 1 +SELECT * FROM t1 WHERE c1 = 1 AND c2 < 3; +c1 c2 c3 c4 +1 1 1 1 +1 2 1 1 +SELECT * FROM t1 WHERE c1 = 1 AND c2 <= 3; +c1 c2 c3 c4 +1 1 1 1 +1 2 1 1 +SELECT * FROM t1 WHERE c1 = 2 AND c2 <= 3; +c1 c2 c3 c4 +2 3 1 1 +SELECT * FROM t1 WHERE c1 = 2 AND c2 = 3; +c1 c2 c3 c4 +2 3 1 1 +SELECT * FROM t1 WHERE c1 = 2 AND c2 >= 3; +c1 c2 c3 c4 +2 3 1 1 +2 4 1 1 +SELECT * FROM t1 WHERE c1 = 2 AND c2 > 3; +c1 c2 c3 c4 +2 4 1 1 +SELECT * FROM t1 WHERE c1 = 2 AND c2 < 4; +c1 c2 c3 c4 +2 3 1 1 +SELECT * FROM t1 WHERE c1 = 2 AND c2 <= 4; +c1 c2 c3 c4 +2 3 1 1 +2 4 1 1 +SELECT * FROM t1 WHERE c1 = 2 AND c2 = 4; +c1 c2 c3 c4 +2 4 1 1 +SELECT * FROM t1 WHERE c1 = 2 AND c2 >= 4; +c1 c2 c3 c4 +2 4 1 1 +SELECT * FROM t1 WHERE c1 = 2 AND c2 > 4; +c1 c2 c3 c4 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE c1 = 1 AND c2 < 1; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE c1 = 1 AND c2 <= 1; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p1 range PRIMARY PRIMARY 8 NULL 1 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE c1 = 1 AND c2 = 1; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p1 const PRIMARY PRIMARY 8 const,const 1 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE c1 = 1 AND c2 >= 1; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p1,p2 range PRIMARY PRIMARY 8 NULL 3 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE c1 = 1 AND c2 > 1; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p1,p2 range PRIMARY PRIMARY 8 NULL 2 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE c1 = 1 AND c2 < 3; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p1 range PRIMARY PRIMARY 8 NULL 2 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE c1 = 1 AND c2 <= 3; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p1,p2 range PRIMARY PRIMARY 8 NULL 3 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE c1 = 2 AND c2 <= 3; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p1,p2 range PRIMARY PRIMARY 8 NULL 2 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE c1 = 2 AND c2 = 3; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p2 const PRIMARY PRIMARY 8 const,const 1 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE c1 = 2 AND c2 >= 3; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p2 range PRIMARY PRIMARY 8 NULL 2 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE c1 = 2 AND c2 > 3; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p2 range PRIMARY PRIMARY 8 NULL 1 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE c1 = 2 AND c2 < 4; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p1,p2 range PRIMARY PRIMARY 8 NULL 2 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE c1 = 2 AND c2 <= 4; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p1,p2 range PRIMARY PRIMARY 8 NULL 3 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE c1 = 2 AND c2 = 4; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p2 const PRIMARY PRIMARY 8 const,const 1 +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE c1 = 2 AND c2 >= 4; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 p2 range PRIMARY PRIMARY 8 NULL 1 Using where +EXPLAIN PARTITIONS SELECT * FROM t1 WHERE c1 = 2 AND c2 > 4; +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +DROP TABLE t1; +# +# MDEV-6239: Partition pruning is not working as expected in an inner query +# +create table t1 +( +company_id bigint(5), +dept_id bigint(5), +emp_id bigint(5), +emp_name varchar(100), +primary key (company_id, emp_id) +) partition by list (company_id) ( +partition p_1000 values in (1000), +partition p_2000 values in (2000), +partition p_3000 values in (3000) +); +create table t2 +( +company_id bigint(5), +dept_id bigint(5), +dept_name varchar(100), +primary key (company_id, dept_id) +) partition by list (company_id) ( +partition p_1000 values in (1000), +partition p_2000 values in (2000), +partition p_3000 values in (3000) +); +insert into t2 values +(1000, 10, 'Engineering'), +(1000, 20, 'Product Management'), +(1000, 30, 'QA'), +(2000, 40, 'Support'), +(2000, 50, 'Professional Services'); +insert into t1 values +(1000, 10, 1, 'John'), +(1000, 10, 2, 'Smith'), +(1000, 20, 3, 'Jacob'), +(1000, 20, 4, 'Brian'), +(1000, 30, 5, 'Chris'), +(1000, 30, 6, 'Ryan'), +(2000, 40, 7, 'Karin'), +(2000, 40, 8, 'Jay'), +(2000, 50, 9, 'Ana'), +(2000, 50, 10, 'Jessica'); +# Table t2 should have only partition p_1000. +explain partitions +select * from t1 +where company_id = 1000 +and dept_id in (select dept_id from t2 where COMPANY_ID = 1000); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 PRIMARY t2 p_1000 ref PRIMARY PRIMARY 8 const 3 Using index +1 PRIMARY t1 p_1000 ALL PRIMARY NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) +drop table t1,t2; +# +# MDEV-9505: Valgrind failure in SEL_ARG::store_min,find_used_partitions,... +# +create table t1 (a int, b char(10), c varchar(5), d int) +partition by range columns(a,b,c) +subpartition by key (c,d) +subpartitions 3 +( partition p0 values less than (1,'abc','abc'), +partition p1 values less than (2,'abc','abc'), +partition p2 values less than (3,'abc','abc'), +partition p3 values less than (4,'abc','abc') +); +insert into t1 values (1,'a','b',1),(2,'a','b',2),(3,'a','b',3); +select * from t1 where (a = 1 AND b < 'd' AND (c = 'b' OR (c = 'c' AND d = 1)) OR +(a = 1 AND b >= 'a' AND (c = 'c' OR (c = 'd' AND d = 2)))); +a b c d +1 a b 1 +drop table t1; +# +# MDEV-14667 Assertion `used_parts > 0' failed in ha_partition::init_record_priority_queue. +# +create table t1 (a int); +insert into t1 values (1),(2); +create table t2 (b int, c int, key(c,b)) partition by hash(b) partitions 2; +insert into t2 values (3,4),(5,6); +select straight_join * from t1, t2 where b != NULL; +a b c +drop table t1, t2; +# +# MDEV-17493: Partition pruning doesn't work for nested outer joins +# +create table t0(a int); +insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +create table t1 (a int, b int, c int); +insert into t1 select a,a,a from t0; +create table t2 (a int, b int, c int); +insert into t2 select a,a,a from t0; +create table t3 ( +part_id int, +a int +) partition by list (part_id) ( +partition p0 values in (0), +partition p1 values in (1), +partition p2 values in (2), +partition p3 values in (3), +partition p4 values in (4) +); +insert into t3 select mod(a,5), a from t0; +explain partitions +select * from t1 left join t3 on (t1.a=t3.a and t3.part_id=3); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 10 +1 SIMPLE t3 p3 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (flat, BNL join) +# The following should have partitions="p3", NOT p0,p1,p2,p3,p4: +explain partitions +select * from t1 left join (t3 join t2) on (t1.a=t3.a and t3.a=t2.b and t3.part_id=3); +id select_type table partitions type possible_keys key key_len ref rows Extra +1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 10 +1 SIMPLE t3 p3 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 10 Using where; Using join buffer (incremental, BNL join) +drop table t0,t1,t2,t3; +# +# End of 10.3 tests +# +# +# MDEV-24283 Assertion `bitmap_is_set(&m_part_info->read_partitions, m_part_spec.start_part)' failed in ha_partition::handle_ordered_index_scan +# +create table t1 (c int key) partition by list (c) (partition p values in (0)); +select max(c) from t1 where c>0; +max(c) +NULL +drop table t1; +# +# End of 10.4 tests +# |