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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-04 18:00:34 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-04 18:00:34 +0000
commit3f619478f796eddbba6e39502fe941b285dd97b1 (patch)
treee2c7b5777f728320e5b5542b6213fd3591ba51e2 /mysql-test/main/join_nested.result
parentInitial commit. (diff)
downloadmariadb-3f619478f796eddbba6e39502fe941b285dd97b1.tar.xz
mariadb-3f619478f796eddbba6e39502fe941b285dd97b1.zip
Adding upstream version 1:10.11.6.upstream/1%10.11.6upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'mysql-test/main/join_nested.result')
-rw-r--r--mysql-test/main/join_nested.result2053
1 files changed, 2053 insertions, 0 deletions
diff --git a/mysql-test/main/join_nested.result b/mysql-test/main/join_nested.result
new file mode 100644
index 00000000..fdfc5a2e
--- /dev/null
+++ b/mysql-test/main/join_nested.result
@@ -0,0 +1,2053 @@
+DROP TABLE IF EXISTS t0,t1,t2,t3,t4,t5,t6,t7,t8,t9;
+SET @save_optimizer_switch=@@optimizer_switch;
+SET optimizer_switch=ifnull(@optimizer_switch_for_join_nested_test,'outer_join_with_cache=off');
+set join_cache_level=1;
+CREATE TABLE t0 (a int, b int, c int);
+CREATE TABLE t1 (a int, b int, c int);
+CREATE TABLE t2 (a int, b int, c int);
+CREATE TABLE t3 (a int, b int, c int);
+CREATE TABLE t4 (a int, b int, c int);
+CREATE TABLE t5 (a int, b int, c int);
+CREATE TABLE t6 (a int, b int, c int);
+CREATE TABLE t7 (a int, b int, c int);
+CREATE TABLE t8 (a int, b int, c int);
+CREATE TABLE t9 (a int, b int, c int);
+INSERT INTO t0 VALUES (1,1,0), (1,2,0), (2,2,0);
+INSERT INTO t1 VALUES (1,3,0), (2,2,0), (3,2,0);
+INSERT INTO t2 VALUES (3,3,0), (4,2,0), (5,3,0);
+INSERT INTO t3 VALUES (1,2,0), (2,2,0);
+INSERT INTO t4 VALUES (3,2,0), (4,2,0);
+INSERT INTO t5 VALUES (3,1,0), (2,2,0), (3,3,0);
+INSERT INTO t6 VALUES (3,2,0), (6,2,0), (6,1,0);
+INSERT INTO t7 VALUES (1,1,0), (2,2,0);
+INSERT INTO t8 VALUES (0,2,0), (1,2,0);
+INSERT INTO t9 VALUES (1,1,0), (1,2,0), (3,3,0);
+SELECT t2.a,t2.b
+FROM t2;
+a b
+3 3
+4 2
+5 3
+SELECT t3.a,t3.b
+FROM t3;
+a b
+1 2
+2 2
+SELECT t4.a,t4.b
+FROM t4;
+a b
+3 2
+4 2
+SELECT t3.a,t3.b,t4.a,t4.b
+FROM t3,t4;
+a b a b
+1 2 3 2
+2 2 3 2
+1 2 4 2
+2 2 4 2
+SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b
+FROM t2
+LEFT JOIN
+(t3, t4)
+ON t2.b=t4.b;
+a b a b a b
+3 3 NULL NULL NULL NULL
+4 2 1 2 3 2
+4 2 1 2 4 2
+4 2 2 2 3 2
+4 2 2 2 4 2
+5 3 NULL NULL NULL NULL
+SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b
+FROM t2
+LEFT JOIN
+(t3, t4)
+ON t3.a=1 AND t2.b=t4.b;
+a b a b a b
+3 3 NULL NULL NULL NULL
+4 2 1 2 3 2
+4 2 1 2 4 2
+5 3 NULL NULL NULL NULL
+EXPLAIN EXTENDED
+SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b
+FROM t2
+LEFT JOIN
+(t3, t4)
+ON t2.b=t4.b
+WHERE t3.a=1 OR t3.c IS NULL;
+id select_type table type possible_keys key key_len ref rows filtered Extra
+1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00
+1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where
+1 SIMPLE t4 ALL NULL NULL NULL NULL 2 100.00 Using where
+Warnings:
+Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b` from `test`.`t2` left join (`test`.`t3` join `test`.`t4`) on(`test`.`t4`.`b` = `test`.`t2`.`b`) where `test`.`t3`.`a` = 1 or `test`.`t3`.`c` is null
+SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b
+FROM t2
+LEFT JOIN
+(t3, t4)
+ON t2.b=t4.b
+WHERE t3.a=1 OR t3.c IS NULL;
+a b a b a b
+3 3 NULL NULL NULL NULL
+4 2 1 2 3 2
+4 2 1 2 4 2
+5 3 NULL NULL NULL NULL
+SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b
+FROM t2
+LEFT JOIN
+(t3, t4)
+ON t2.b=t4.b
+WHERE t3.a>1 OR t3.c IS NULL;
+a b a b a b
+3 3 NULL NULL NULL NULL
+4 2 2 2 3 2
+4 2 2 2 4 2
+5 3 NULL NULL NULL NULL
+SELECT t5.a,t5.b
+FROM t5;
+a b
+3 1
+2 2
+3 3
+SELECT t3.a,t3.b,t4.a,t4.b,t5.a,t5.b
+FROM t3,t4,t5;
+a b a b a b
+1 2 3 2 3 1
+2 2 3 2 3 1
+1 2 4 2 3 1
+2 2 4 2 3 1
+1 2 3 2 2 2
+2 2 3 2 2 2
+1 2 4 2 2 2
+2 2 4 2 2 2
+1 2 3 2 3 3
+2 2 3 2 3 3
+1 2 4 2 3 3
+2 2 4 2 3 3
+SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,t5.a,t5.b
+FROM t2
+LEFT JOIN
+(t3, t4, t5)
+ON t2.b=t4.b;
+a b a b a b a b
+3 3 NULL NULL NULL NULL NULL NULL
+4 2 1 2 3 2 3 1
+4 2 1 2 3 2 2 2
+4 2 1 2 3 2 3 3
+4 2 1 2 4 2 3 1
+4 2 1 2 4 2 2 2
+4 2 1 2 4 2 3 3
+4 2 2 2 3 2 3 1
+4 2 2 2 3 2 2 2
+4 2 2 2 3 2 3 3
+4 2 2 2 4 2 3 1
+4 2 2 2 4 2 2 2
+4 2 2 2 4 2 3 3
+5 3 NULL NULL NULL NULL NULL NULL
+EXPLAIN EXTENDED
+SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,t5.a,t5.b
+FROM t2
+LEFT JOIN
+(t3, t4, t5)
+ON t2.b=t4.b
+WHERE t3.a>1 OR t3.c IS NULL;
+id select_type table type possible_keys key key_len ref rows filtered Extra
+1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00
+1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where
+1 SIMPLE t4 ALL NULL NULL NULL NULL 2 100.00 Using where
+1 SIMPLE t5 ALL NULL NULL NULL NULL 3 100.00
+Warnings:
+Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b`,`test`.`t5`.`a` AS `a`,`test`.`t5`.`b` AS `b` from `test`.`t2` left join (`test`.`t3` join `test`.`t4` join `test`.`t5`) on(`test`.`t4`.`b` = `test`.`t2`.`b`) where `test`.`t3`.`a` > 1 or `test`.`t3`.`c` is null
+SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,t5.a,t5.b
+FROM t2
+LEFT JOIN
+(t3, t4, t5)
+ON t2.b=t4.b
+WHERE t3.a>1 OR t3.c IS NULL;
+a b a b a b a b
+3 3 NULL NULL NULL NULL NULL NULL
+4 2 2 2 3 2 3 1
+4 2 2 2 3 2 2 2
+4 2 2 2 3 2 3 3
+4 2 2 2 4 2 3 1
+4 2 2 2 4 2 2 2
+4 2 2 2 4 2 3 3
+5 3 NULL NULL NULL NULL NULL NULL
+EXPLAIN EXTENDED
+SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,t5.a,t5.b
+FROM t2
+LEFT JOIN
+(t3, t4, t5)
+ON t2.b=t4.b
+WHERE (t3.a>1 OR t3.c IS NULL) AND
+(t5.a<3 OR t5.c IS NULL);
+id select_type table type possible_keys key key_len ref rows filtered Extra
+1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00
+1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where
+1 SIMPLE t4 ALL NULL NULL NULL NULL 2 100.00 Using where
+1 SIMPLE t5 ALL NULL NULL NULL NULL 3 100.00 Using where
+Warnings:
+Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b`,`test`.`t5`.`a` AS `a`,`test`.`t5`.`b` AS `b` from `test`.`t2` left join (`test`.`t3` join `test`.`t4` join `test`.`t5`) on(`test`.`t4`.`b` = `test`.`t2`.`b`) where (`test`.`t3`.`a` > 1 or `test`.`t3`.`c` is null) and (`test`.`t5`.`a` < 3 or `test`.`t5`.`c` is null)
+SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,t5.a,t5.b
+FROM t2
+LEFT JOIN
+(t3, t4, t5)
+ON t2.b=t4.b
+WHERE (t3.a>1 OR t3.c IS NULL) AND
+(t5.a<3 OR t5.c IS NULL);
+a b a b a b a b
+3 3 NULL NULL NULL NULL NULL NULL
+4 2 2 2 3 2 2 2
+4 2 2 2 4 2 2 2
+5 3 NULL NULL NULL NULL NULL NULL
+SELECT t6.a,t6.b
+FROM t6;
+a b
+3 2
+6 2
+6 1
+SELECT t7.a,t7.b
+FROM t7;
+a b
+1 1
+2 2
+SELECT t6.a,t6.b,t7.a,t7.b
+FROM t6,t7;
+a b a b
+3 2 1 1
+3 2 2 2
+6 2 1 1
+6 2 2 2
+6 1 1 1
+6 1 2 2
+SELECT t8.a,t8.b
+FROM t8;
+a b
+0 2
+1 2
+EXPLAIN EXTENDED
+SELECT t6.a,t6.b,t7.a,t7.b,t8.a,t8.b
+FROM (t6, t7)
+LEFT JOIN
+t8
+ON t7.b=t8.b AND t6.b < 10;
+id select_type table type possible_keys key key_len ref rows filtered Extra
+1 SIMPLE t7 ALL NULL NULL NULL NULL 2 100.00
+1 SIMPLE t6 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (flat, BNL join)
+1 SIMPLE t8 ALL NULL NULL NULL NULL 2 100.00 Using where
+Warnings:
+Note 1003 select `test`.`t6`.`a` AS `a`,`test`.`t6`.`b` AS `b`,`test`.`t7`.`a` AS `a`,`test`.`t7`.`b` AS `b`,`test`.`t8`.`a` AS `a`,`test`.`t8`.`b` AS `b` from `test`.`t6` join `test`.`t7` left join `test`.`t8` on(`test`.`t8`.`b` = `test`.`t7`.`b` and `test`.`t6`.`b` < 10) where 1
+SELECT t6.a,t6.b,t7.a,t7.b,t8.a,t8.b
+FROM (t6, t7)
+LEFT JOIN
+t8
+ON t7.b=t8.b AND t6.b < 10;
+a b a b a b
+3 2 1 1 NULL NULL
+3 2 2 2 0 2
+3 2 2 2 1 2
+6 2 1 1 NULL NULL
+6 2 2 2 0 2
+6 2 2 2 1 2
+6 1 1 1 NULL NULL
+6 1 2 2 0 2
+6 1 2 2 1 2
+SELECT t5.a,t5.b
+FROM t5;
+a b
+3 1
+2 2
+3 3
+SELECT t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b
+FROM t5
+LEFT JOIN
+(
+(t6, t7)
+LEFT JOIN
+t8
+ON t7.b=t8.b AND t6.b < 10
+)
+ON t6.b >= 2 AND t5.b=t7.b;
+a b a b a b a b
+3 1 3 2 1 1 NULL NULL
+3 1 6 2 1 1 NULL NULL
+2 2 3 2 2 2 0 2
+2 2 3 2 2 2 1 2
+2 2 6 2 2 2 0 2
+2 2 6 2 2 2 1 2
+3 3 NULL NULL NULL NULL NULL NULL
+SELECT t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b
+FROM t5
+LEFT JOIN
+(
+(t6, t7)
+LEFT JOIN
+t8
+ON t7.b=t8.b AND t6.b < 10
+)
+ON t6.b >= 2 AND t5.b=t7.b AND
+(t8.a < 1 OR t8.c IS NULL);
+a b a b a b a b
+3 1 3 2 1 1 NULL NULL
+3 1 6 2 1 1 NULL NULL
+2 2 3 2 2 2 0 2
+2 2 6 2 2 2 0 2
+3 3 NULL NULL NULL NULL NULL NULL
+SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b
+FROM t2
+LEFT JOIN
+(t3, t4)
+ON t3.a=1 AND t2.b=t4.b;
+a b a b a b
+3 3 NULL NULL NULL NULL
+4 2 1 2 3 2
+4 2 1 2 4 2
+5 3 NULL NULL NULL NULL
+SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,
+t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b
+FROM t2
+LEFT JOIN
+(t3, t4)
+ON t3.a=1 AND t2.b=t4.b,
+t5
+LEFT JOIN
+(
+(t6, t7)
+LEFT JOIN
+t8
+ON t7.b=t8.b AND t6.b < 10
+)
+ON t6.b >= 2 AND t5.b=t7.b;
+a b a b a b a b a b a b a b
+3 3 NULL NULL NULL NULL 3 1 3 2 1 1 NULL NULL
+3 3 NULL NULL NULL NULL 3 1 6 2 1 1 NULL NULL
+4 2 1 2 3 2 3 1 3 2 1 1 NULL NULL
+4 2 1 2 3 2 3 1 6 2 1 1 NULL NULL
+4 2 1 2 4 2 3 1 3 2 1 1 NULL NULL
+4 2 1 2 4 2 3 1 6 2 1 1 NULL NULL
+5 3 NULL NULL NULL NULL 3 1 3 2 1 1 NULL NULL
+5 3 NULL NULL NULL NULL 3 1 6 2 1 1 NULL NULL
+3 3 NULL NULL NULL NULL 2 2 3 2 2 2 0 2
+3 3 NULL NULL NULL NULL 2 2 3 2 2 2 1 2
+3 3 NULL NULL NULL NULL 2 2 6 2 2 2 0 2
+3 3 NULL NULL NULL NULL 2 2 6 2 2 2 1 2
+4 2 1 2 3 2 2 2 3 2 2 2 0 2
+4 2 1 2 3 2 2 2 3 2 2 2 1 2
+4 2 1 2 3 2 2 2 6 2 2 2 0 2
+4 2 1 2 3 2 2 2 6 2 2 2 1 2
+4 2 1 2 4 2 2 2 3 2 2 2 0 2
+4 2 1 2 4 2 2 2 3 2 2 2 1 2
+4 2 1 2 4 2 2 2 6 2 2 2 0 2
+4 2 1 2 4 2 2 2 6 2 2 2 1 2
+5 3 NULL NULL NULL NULL 2 2 3 2 2 2 0 2
+5 3 NULL NULL NULL NULL 2 2 3 2 2 2 1 2
+5 3 NULL NULL NULL NULL 2 2 6 2 2 2 0 2
+5 3 NULL NULL NULL NULL 2 2 6 2 2 2 1 2
+3 3 NULL NULL NULL NULL 3 3 NULL NULL NULL NULL NULL NULL
+4 2 1 2 3 2 3 3 NULL NULL NULL NULL NULL NULL
+4 2 1 2 4 2 3 3 NULL NULL NULL NULL NULL NULL
+5 3 NULL NULL NULL NULL 3 3 NULL NULL NULL NULL NULL NULL
+SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,
+t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b
+FROM t2
+LEFT JOIN
+(t3, t4)
+ON t3.a=1 AND t2.b=t4.b,
+t5
+LEFT JOIN
+(
+(t6, t7)
+LEFT JOIN
+t8
+ON t7.b=t8.b AND t6.b < 10
+)
+ON t6.b >= 2 AND t5.b=t7.b
+WHERE t2.a > 3 AND
+(t6.a < 6 OR t6.c IS NULL);
+a b a b a b a b a b a b a b
+4 2 1 2 3 2 3 1 3 2 1 1 NULL NULL
+4 2 1 2 4 2 3 1 3 2 1 1 NULL NULL
+5 3 NULL NULL NULL NULL 3 1 3 2 1 1 NULL NULL
+4 2 1 2 3 2 2 2 3 2 2 2 0 2
+4 2 1 2 3 2 2 2 3 2 2 2 1 2
+4 2 1 2 4 2 2 2 3 2 2 2 0 2
+4 2 1 2 4 2 2 2 3 2 2 2 1 2
+5 3 NULL NULL NULL NULL 2 2 3 2 2 2 0 2
+5 3 NULL NULL NULL NULL 2 2 3 2 2 2 1 2
+4 2 1 2 3 2 3 3 NULL NULL NULL NULL NULL NULL
+4 2 1 2 4 2 3 3 NULL NULL NULL NULL NULL NULL
+5 3 NULL NULL NULL NULL 3 3 NULL NULL NULL NULL NULL NULL
+SELECT t1.a,t1.b
+FROM t1;
+a b
+1 3
+2 2
+3 2
+SELECT t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,
+t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b
+FROM t1
+LEFT JOIN
+(
+t2
+LEFT JOIN
+(t3, t4)
+ON t3.a=1 AND t2.b=t4.b,
+t5
+LEFT JOIN
+(
+(t6, t7)
+LEFT JOIN
+t8
+ON t7.b=t8.b AND t6.b < 10
+)
+ON t6.b >= 2 AND t5.b=t7.b
+)
+ON (t3.b=2 OR t3.c IS NULL) AND (t6.b=2 OR t6.c IS NULL) AND
+(t1.b=t5.b OR t3.c IS NULL OR t6.c IS NULL or t8.c IS NULL) AND
+(t1.a != 2);
+a b a b a b a b a b a b a b a b
+1 3 3 3 NULL NULL NULL NULL 3 1 3 2 1 1 NULL NULL
+1 3 3 3 NULL NULL NULL NULL 3 1 6 2 1 1 NULL NULL
+1 3 3 3 NULL NULL NULL NULL 2 2 3 2 2 2 0 2
+1 3 3 3 NULL NULL NULL NULL 2 2 3 2 2 2 1 2
+1 3 3 3 NULL NULL NULL NULL 2 2 6 2 2 2 0 2
+1 3 3 3 NULL NULL NULL NULL 2 2 6 2 2 2 1 2
+1 3 3 3 NULL NULL NULL NULL 3 3 NULL NULL NULL NULL NULL NULL
+1 3 4 2 1 2 3 2 3 1 3 2 1 1 NULL NULL
+1 3 4 2 1 2 3 2 3 1 6 2 1 1 NULL NULL
+1 3 4 2 1 2 3 2 3 3 NULL NULL NULL NULL NULL NULL
+1 3 4 2 1 2 4 2 3 1 3 2 1 1 NULL NULL
+1 3 4 2 1 2 4 2 3 1 6 2 1 1 NULL NULL
+1 3 4 2 1 2 4 2 3 3 NULL NULL NULL NULL NULL NULL
+1 3 5 3 NULL NULL NULL NULL 3 1 3 2 1 1 NULL NULL
+1 3 5 3 NULL NULL NULL NULL 3 1 6 2 1 1 NULL NULL
+1 3 5 3 NULL NULL NULL NULL 2 2 3 2 2 2 0 2
+1 3 5 3 NULL NULL NULL NULL 2 2 3 2 2 2 1 2
+1 3 5 3 NULL NULL NULL NULL 2 2 6 2 2 2 0 2
+1 3 5 3 NULL NULL NULL NULL 2 2 6 2 2 2 1 2
+1 3 5 3 NULL NULL NULL NULL 3 3 NULL NULL NULL NULL NULL NULL
+2 2 NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL
+3 2 3 3 NULL NULL NULL NULL 3 1 3 2 1 1 NULL NULL
+3 2 3 3 NULL NULL NULL NULL 3 1 6 2 1 1 NULL NULL
+3 2 3 3 NULL NULL NULL NULL 2 2 3 2 2 2 0 2
+3 2 3 3 NULL NULL NULL NULL 2 2 3 2 2 2 1 2
+3 2 3 3 NULL NULL NULL NULL 2 2 6 2 2 2 0 2
+3 2 3 3 NULL NULL NULL NULL 2 2 6 2 2 2 1 2
+3 2 3 3 NULL NULL NULL NULL 3 3 NULL NULL NULL NULL NULL NULL
+3 2 4 2 1 2 3 2 3 1 3 2 1 1 NULL NULL
+3 2 4 2 1 2 3 2 3 1 6 2 1 1 NULL NULL
+3 2 4 2 1 2 3 2 2 2 3 2 2 2 0 2
+3 2 4 2 1 2 3 2 2 2 3 2 2 2 1 2
+3 2 4 2 1 2 3 2 2 2 6 2 2 2 0 2
+3 2 4 2 1 2 3 2 2 2 6 2 2 2 1 2
+3 2 4 2 1 2 3 2 3 3 NULL NULL NULL NULL NULL NULL
+3 2 4 2 1 2 4 2 3 1 3 2 1 1 NULL NULL
+3 2 4 2 1 2 4 2 3 1 6 2 1 1 NULL NULL
+3 2 4 2 1 2 4 2 2 2 3 2 2 2 0 2
+3 2 4 2 1 2 4 2 2 2 3 2 2 2 1 2
+3 2 4 2 1 2 4 2 2 2 6 2 2 2 0 2
+3 2 4 2 1 2 4 2 2 2 6 2 2 2 1 2
+3 2 4 2 1 2 4 2 3 3 NULL NULL NULL NULL NULL NULL
+3 2 5 3 NULL NULL NULL NULL 3 1 3 2 1 1 NULL NULL
+3 2 5 3 NULL NULL NULL NULL 3 1 6 2 1 1 NULL NULL
+3 2 5 3 NULL NULL NULL NULL 2 2 3 2 2 2 0 2
+3 2 5 3 NULL NULL NULL NULL 2 2 3 2 2 2 1 2
+3 2 5 3 NULL NULL NULL NULL 2 2 6 2 2 2 0 2
+3 2 5 3 NULL NULL NULL NULL 2 2 6 2 2 2 1 2
+3 2 5 3 NULL NULL NULL NULL 3 3 NULL NULL NULL NULL NULL NULL
+SELECT t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,
+t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b
+FROM t1
+LEFT JOIN
+(
+t2
+LEFT JOIN
+(t3, t4)
+ON t3.a=1 AND t2.b=t4.b,
+t5
+LEFT JOIN
+(
+(t6, t7)
+LEFT JOIN
+t8
+ON t7.b=t8.b AND t6.b < 10
+)
+ON t6.b >= 2 AND t5.b=t7.b
+)
+ON (t3.b=2 OR t3.c IS NULL) AND (t6.b=2 OR t6.c IS NULL) AND
+(t1.b=t5.b OR t3.c IS NULL OR t6.c IS NULL or t8.c IS NULL) AND
+(t1.a != 2)
+WHERE (t2.a >= 4 OR t2.c IS NULL);
+a b a b a b a b a b a b a b a b
+1 3 4 2 1 2 3 2 3 1 3 2 1 1 NULL NULL
+1 3 4 2 1 2 3 2 3 1 6 2 1 1 NULL NULL
+1 3 4 2 1 2 3 2 3 3 NULL NULL NULL NULL NULL NULL
+1 3 4 2 1 2 4 2 3 1 3 2 1 1 NULL NULL
+1 3 4 2 1 2 4 2 3 1 6 2 1 1 NULL NULL
+1 3 4 2 1 2 4 2 3 3 NULL NULL NULL NULL NULL NULL
+1 3 5 3 NULL NULL NULL NULL 3 1 3 2 1 1 NULL NULL
+1 3 5 3 NULL NULL NULL NULL 3 1 6 2 1 1 NULL NULL
+1 3 5 3 NULL NULL NULL NULL 2 2 3 2 2 2 0 2
+1 3 5 3 NULL NULL NULL NULL 2 2 3 2 2 2 1 2
+1 3 5 3 NULL NULL NULL NULL 2 2 6 2 2 2 0 2
+1 3 5 3 NULL NULL NULL NULL 2 2 6 2 2 2 1 2
+1 3 5 3 NULL NULL NULL NULL 3 3 NULL NULL NULL NULL NULL NULL
+2 2 NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL
+3 2 4 2 1 2 3 2 3 1 3 2 1 1 NULL NULL
+3 2 4 2 1 2 3 2 3 1 6 2 1 1 NULL NULL
+3 2 4 2 1 2 3 2 2 2 3 2 2 2 0 2
+3 2 4 2 1 2 3 2 2 2 3 2 2 2 1 2
+3 2 4 2 1 2 3 2 2 2 6 2 2 2 0 2
+3 2 4 2 1 2 3 2 2 2 6 2 2 2 1 2
+3 2 4 2 1 2 3 2 3 3 NULL NULL NULL NULL NULL NULL
+3 2 4 2 1 2 4 2 3 1 3 2 1 1 NULL NULL
+3 2 4 2 1 2 4 2 3 1 6 2 1 1 NULL NULL
+3 2 4 2 1 2 4 2 2 2 3 2 2 2 0 2
+3 2 4 2 1 2 4 2 2 2 3 2 2 2 1 2
+3 2 4 2 1 2 4 2 2 2 6 2 2 2 0 2
+3 2 4 2 1 2 4 2 2 2 6 2 2 2 1 2
+3 2 4 2 1 2 4 2 3 3 NULL NULL NULL NULL NULL NULL
+3 2 5 3 NULL NULL NULL NULL 3 1 3 2 1 1 NULL NULL
+3 2 5 3 NULL NULL NULL NULL 3 1 6 2 1 1 NULL NULL
+3 2 5 3 NULL NULL NULL NULL 2 2 3 2 2 2 0 2
+3 2 5 3 NULL NULL NULL NULL 2 2 3 2 2 2 1 2
+3 2 5 3 NULL NULL NULL NULL 2 2 6 2 2 2 0 2
+3 2 5 3 NULL NULL NULL NULL 2 2 6 2 2 2 1 2
+3 2 5 3 NULL NULL NULL NULL 3 3 NULL NULL NULL NULL NULL NULL
+SELECT t0.a,t0.b
+FROM t0;
+a b
+1 1
+1 2
+2 2
+EXPLAIN EXTENDED
+SELECT t0.a,t0.b,t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,
+t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b
+FROM t0,t1
+LEFT JOIN
+(
+t2
+LEFT JOIN
+(t3, t4)
+ON t3.a=1 AND t2.b=t4.b,
+t5
+LEFT JOIN
+(
+(t6, t7)
+LEFT JOIN
+t8
+ON t7.b=t8.b AND t6.b < 10
+)
+ON t6.b >= 2 AND t5.b=t7.b
+)
+ON (t3.b=2 OR t3.c IS NULL) AND (t6.b=2 OR t6.c IS NULL) AND
+(t1.b=t5.b OR t3.c IS NULL OR t6.c IS NULL or t8.c IS NULL) AND
+(t1.a != 2)
+WHERE t0.a=1 AND
+t0.b=t1.b AND
+(t2.a >= 4 OR t2.c IS NULL);
+id select_type table type possible_keys key key_len ref rows filtered Extra
+1 SIMPLE t0 ALL NULL NULL NULL NULL 3 100.00 Using where
+1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join)
+1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where
+1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where
+1 SIMPLE t4 ALL NULL NULL NULL NULL 2 100.00 Using where
+1 SIMPLE t5 ALL NULL NULL NULL NULL 3 100.00
+1 SIMPLE t7 ALL NULL NULL NULL NULL 2 100.00 Using where
+1 SIMPLE t6 ALL NULL NULL NULL NULL 3 100.00 Using where
+1 SIMPLE t8 ALL NULL NULL NULL NULL 2 100.00 Using where
+Warnings:
+Note 1003 select `test`.`t0`.`a` AS `a`,`test`.`t0`.`b` AS `b`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b`,`test`.`t5`.`a` AS `a`,`test`.`t5`.`b` AS `b`,`test`.`t6`.`a` AS `a`,`test`.`t6`.`b` AS `b`,`test`.`t7`.`a` AS `a`,`test`.`t7`.`b` AS `b`,`test`.`t8`.`a` AS `a`,`test`.`t8`.`b` AS `b` from `test`.`t0` join `test`.`t1` left join (`test`.`t2` left join (`test`.`t3` join `test`.`t4`) on(`test`.`t3`.`a` = 1 and `test`.`t4`.`b` = `test`.`t2`.`b`) join `test`.`t5` left join (`test`.`t6` join `test`.`t7` left join `test`.`t8` on(`test`.`t8`.`b` = `test`.`t5`.`b` and `test`.`t6`.`b` < 10)) on(`test`.`t7`.`b` = `test`.`t5`.`b` and `test`.`t6`.`b` >= 2)) on((`test`.`t3`.`b` = 2 or `test`.`t3`.`c` is null) and (`test`.`t6`.`b` = 2 or `test`.`t6`.`c` is null) and (`test`.`t5`.`b` = `test`.`t0`.`b` or `test`.`t3`.`c` is null or `test`.`t6`.`c` is null or `test`.`t8`.`c` is null) and `test`.`t1`.`a` <> 2) where `test`.`t0`.`a` = 1 and `test`.`t1`.`b` = `test`.`t0`.`b` and (`test`.`t2`.`a` >= 4 or `test`.`t2`.`c` is null)
+SELECT t0.a,t0.b,t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,
+t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b
+FROM t0,t1
+LEFT JOIN
+(
+t2
+LEFT JOIN
+(t3, t4)
+ON t3.a=1 AND t2.b=t4.b,
+t5
+LEFT JOIN
+(
+(t6, t7)
+LEFT JOIN
+t8
+ON t7.b=t8.b AND t6.b < 10
+)
+ON t6.b >= 2 AND t5.b=t7.b
+)
+ON (t3.b=2 OR t3.c IS NULL) AND (t6.b=2 OR t6.c IS NULL) AND
+(t1.b=t5.b OR t3.c IS NULL OR t6.c IS NULL or t8.c IS NULL) AND
+(t1.a != 2)
+WHERE t0.a=1 AND
+t0.b=t1.b AND
+(t2.a >= 4 OR t2.c IS NULL);
+a b a b a b a b a b a b a b a b a b
+1 2 2 2 NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL
+1 2 3 2 4 2 1 2 3 2 3 1 3 2 1 1 NULL NULL
+1 2 3 2 4 2 1 2 3 2 3 1 6 2 1 1 NULL NULL
+1 2 3 2 4 2 1 2 3 2 2 2 3 2 2 2 0 2
+1 2 3 2 4 2 1 2 3 2 2 2 3 2 2 2 1 2
+1 2 3 2 4 2 1 2 3 2 2 2 6 2 2 2 0 2
+1 2 3 2 4 2 1 2 3 2 2 2 6 2 2 2 1 2
+1 2 3 2 4 2 1 2 3 2 3 3 NULL NULL NULL NULL NULL NULL
+1 2 3 2 4 2 1 2 4 2 3 1 3 2 1 1 NULL NULL
+1 2 3 2 4 2 1 2 4 2 3 1 6 2 1 1 NULL NULL
+1 2 3 2 4 2 1 2 4 2 2 2 3 2 2 2 0 2
+1 2 3 2 4 2 1 2 4 2 2 2 3 2 2 2 1 2
+1 2 3 2 4 2 1 2 4 2 2 2 6 2 2 2 0 2
+1 2 3 2 4 2 1 2 4 2 2 2 6 2 2 2 1 2
+1 2 3 2 4 2 1 2 4 2 3 3 NULL NULL NULL NULL NULL NULL
+1 2 3 2 5 3 NULL NULL NULL NULL 3 1 3 2 1 1 NULL NULL
+1 2 3 2 5 3 NULL NULL NULL NULL 3 1 6 2 1 1 NULL NULL
+1 2 3 2 5 3 NULL NULL NULL NULL 2 2 3 2 2 2 0 2
+1 2 3 2 5 3 NULL NULL NULL NULL 2 2 3 2 2 2 1 2
+1 2 3 2 5 3 NULL NULL NULL NULL 2 2 6 2 2 2 0 2
+1 2 3 2 5 3 NULL NULL NULL NULL 2 2 6 2 2 2 1 2
+1 2 3 2 5 3 NULL NULL NULL NULL 3 3 NULL NULL NULL NULL NULL NULL
+EXPLAIN EXTENDED
+SELECT t0.a,t0.b,t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,
+t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b,t9.a,t9.b
+FROM t0,t1
+LEFT JOIN
+(
+t2
+LEFT JOIN
+(t3, t4)
+ON t3.a=1 AND t2.b=t4.b,
+t5
+LEFT JOIN
+(
+(t6, t7)
+LEFT JOIN
+t8
+ON t7.b=t8.b AND t6.b < 10
+)
+ON t6.b >= 2 AND t5.b=t7.b
+)
+ON (t3.b=2 OR t3.c IS NULL) AND (t6.b=2 OR t6.c IS NULL) AND
+(t1.b=t5.b OR t3.c IS NULL OR t6.c IS NULL or t8.c IS NULL) AND
+(t1.a != 2),
+t9
+WHERE t0.a=1 AND
+t0.b=t1.b AND
+(t2.a >= 4 OR t2.c IS NULL) AND
+(t3.a < 5 OR t3.c IS NULL) AND
+(t3.b=t4.b OR t3.c IS NULL OR t4.c IS NULL) AND
+(t5.a >=2 OR t5.c IS NULL) AND
+(t6.a >=4 OR t6.c IS NULL) AND
+(t7.a <= 2 OR t7.c IS NULL) AND
+(t8.a < 1 OR t8.c IS NULL) AND
+(t8.b=t9.b OR t8.c IS NULL) AND
+(t9.a=1);
+id select_type table type possible_keys key key_len ref rows filtered Extra
+1 SIMPLE t0 ALL NULL NULL NULL NULL 3 100.00 Using where
+1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join)
+1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where
+1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where
+1 SIMPLE t4 ALL NULL NULL NULL NULL 2 100.00 Using where
+1 SIMPLE t5 ALL NULL NULL NULL NULL 3 100.00 Using where
+1 SIMPLE t7 ALL NULL NULL NULL NULL 2 100.00 Using where
+1 SIMPLE t6 ALL NULL NULL NULL NULL 3 100.00 Using where
+1 SIMPLE t8 ALL NULL NULL NULL NULL 2 100.00 Using where
+1 SIMPLE t9 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join)
+Warnings:
+Note 1003 select `test`.`t0`.`a` AS `a`,`test`.`t0`.`b` AS `b`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b`,`test`.`t5`.`a` AS `a`,`test`.`t5`.`b` AS `b`,`test`.`t6`.`a` AS `a`,`test`.`t6`.`b` AS `b`,`test`.`t7`.`a` AS `a`,`test`.`t7`.`b` AS `b`,`test`.`t8`.`a` AS `a`,`test`.`t8`.`b` AS `b`,`test`.`t9`.`a` AS `a`,`test`.`t9`.`b` AS `b` from `test`.`t0` join `test`.`t1` left join (`test`.`t2` left join (`test`.`t3` join `test`.`t4`) on(`test`.`t3`.`a` = 1 and `test`.`t4`.`b` = `test`.`t2`.`b`) join `test`.`t5` left join (`test`.`t6` join `test`.`t7` left join `test`.`t8` on(`test`.`t8`.`b` = `test`.`t5`.`b` and `test`.`t6`.`b` < 10)) on(`test`.`t7`.`b` = `test`.`t5`.`b` and `test`.`t6`.`b` >= 2)) on((`test`.`t3`.`b` = 2 or `test`.`t3`.`c` is null) and (`test`.`t6`.`b` = 2 or `test`.`t6`.`c` is null) and (`test`.`t5`.`b` = `test`.`t0`.`b` or `test`.`t3`.`c` is null or `test`.`t6`.`c` is null or `test`.`t8`.`c` is null) and `test`.`t1`.`a` <> 2) join `test`.`t9` where `test`.`t0`.`a` = 1 and `test`.`t1`.`b` = `test`.`t0`.`b` and `test`.`t9`.`a` = 1 and (`test`.`t2`.`a` >= 4 or `test`.`t2`.`c` is null) and (`test`.`t3`.`a` < 5 or `test`.`t3`.`c` is null) and (`test`.`t4`.`b` = `test`.`t3`.`b` or `test`.`t3`.`c` is null or `test`.`t4`.`c` is null) and (`test`.`t5`.`a` >= 2 or `test`.`t5`.`c` is null) and (`test`.`t6`.`a` >= 4 or `test`.`t6`.`c` is null) and (`test`.`t7`.`a` <= 2 or `test`.`t7`.`c` is null) and (`test`.`t8`.`a` < 1 or `test`.`t8`.`c` is null) and (`test`.`t9`.`b` = `test`.`t8`.`b` or `test`.`t8`.`c` is null)
+SELECT t9.a,t9.b
+FROM t9;
+a b
+1 1
+1 2
+3 3
+SELECT t0.a,t0.b,t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,
+t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b,t9.a,t9.b
+FROM t0,t1
+LEFT JOIN
+(
+t2
+LEFT JOIN
+(t3, t4)
+ON t3.a=1 AND t2.b=t4.b,
+t5
+LEFT JOIN
+(
+(t6, t7)
+LEFT JOIN
+t8
+ON t7.b=t8.b AND t6.b < 10
+)
+ON t6.b >= 2 AND t5.b=t7.b
+)
+ON (t3.b=2 OR t3.c IS NULL) AND (t6.b=2 OR t6.c IS NULL) AND
+(t1.b=t5.b OR t3.c IS NULL OR t6.c IS NULL or t8.c IS NULL) AND
+(t1.a != 2),
+t9
+WHERE t0.a=1 AND
+t0.b=t1.b AND
+(t2.a >= 4 OR t2.c IS NULL) AND
+(t3.a < 5 OR t3.c IS NULL) AND
+(t3.b=t4.b OR t3.c IS NULL OR t4.c IS NULL) AND
+(t5.a >=2 OR t5.c IS NULL) AND
+(t6.a >=4 OR t6.c IS NULL) AND
+(t7.a <= 2 OR t7.c IS NULL) AND
+(t8.a < 1 OR t8.c IS NULL) AND
+(t8.b=t9.b OR t8.c IS NULL) AND
+(t9.a=1);
+a b a b a b a b a b a b a b a b a b a b
+1 2 2 2 NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL 1 1
+1 2 3 2 4 2 1 2 3 2 3 1 6 2 1 1 NULL NULL 1 1
+1 2 3 2 4 2 1 2 3 2 3 3 NULL NULL NULL NULL NULL NULL 1 1
+1 2 3 2 4 2 1 2 4 2 3 1 6 2 1 1 NULL NULL 1 1
+1 2 3 2 4 2 1 2 4 2 3 3 NULL NULL NULL NULL NULL NULL 1 1
+1 2 3 2 5 3 NULL NULL NULL NULL 3 1 6 2 1 1 NULL NULL 1 1
+1 2 3 2 5 3 NULL NULL NULL NULL 3 3 NULL NULL NULL NULL NULL NULL 1 1
+1 2 2 2 NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL 1 2
+1 2 3 2 4 2 1 2 3 2 3 1 6 2 1 1 NULL NULL 1 2
+1 2 3 2 4 2 1 2 3 2 2 2 6 2 2 2 0 2 1 2
+1 2 3 2 4 2 1 2 3 2 3 3 NULL NULL NULL NULL NULL NULL 1 2
+1 2 3 2 4 2 1 2 4 2 3 1 6 2 1 1 NULL NULL 1 2
+1 2 3 2 4 2 1 2 4 2 2 2 6 2 2 2 0 2 1 2
+1 2 3 2 4 2 1 2 4 2 3 3 NULL NULL NULL NULL NULL NULL 1 2
+1 2 3 2 5 3 NULL NULL NULL NULL 3 1 6 2 1 1 NULL NULL 1 2
+1 2 3 2 5 3 NULL NULL NULL NULL 2 2 6 2 2 2 0 2 1 2
+1 2 3 2 5 3 NULL NULL NULL NULL 3 3 NULL NULL NULL NULL NULL NULL 1 2
+SELECT t1.a,t1.b
+FROM t1;
+a b
+1 3
+2 2
+3 2
+SELECT t2.a,t2.b
+FROM t2;
+a b
+3 3
+4 2
+5 3
+SELECT t3.a,t3.b
+FROM t3;
+a b
+1 2
+2 2
+SELECT t2.a,t2.b,t3.a,t3.b
+FROM t2
+LEFT JOIN
+t3
+ON t2.b=t3.b;
+a b a b
+3 3 NULL NULL
+4 2 1 2
+4 2 2 2
+5 3 NULL NULL
+SELECT t1.a,t1.b,t2.a,t2.b,t3.a,t3.b
+FROM t1, t2
+LEFT JOIN
+t3
+ON t2.b=t3.b
+WHERE t1.a <= 2;
+a b a b a b
+1 3 3 3 NULL NULL
+2 2 3 3 NULL NULL
+1 3 4 2 1 2
+1 3 4 2 2 2
+2 2 4 2 1 2
+2 2 4 2 2 2
+1 3 5 3 NULL NULL
+2 2 5 3 NULL NULL
+SELECT t1.a,t1.b,t2.a,t2.b,t3.a,t3.b
+FROM t1, t3
+RIGHT JOIN
+t2
+ON t2.b=t3.b
+WHERE t1.a <= 2;
+a b a b a b
+1 3 3 3 NULL NULL
+2 2 3 3 NULL NULL
+1 3 4 2 1 2
+1 3 4 2 2 2
+2 2 4 2 1 2
+2 2 4 2 2 2
+1 3 5 3 NULL NULL
+2 2 5 3 NULL NULL
+SELECT t3.a,t3.b,t4.a,t4.b
+FROM t3,t4;
+a b a b
+1 2 3 2
+2 2 3 2
+1 2 4 2
+2 2 4 2
+SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b
+FROM t2
+LEFT JOIN
+(t3, t4)
+ON t3.a=1 AND t2.b=t4.b;
+a b a b a b
+3 3 NULL NULL NULL NULL
+4 2 1 2 3 2
+4 2 1 2 4 2
+5 3 NULL NULL NULL NULL
+SELECT t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b
+FROM t1, t2
+LEFT JOIN
+(t3, t4)
+ON t3.a=1 AND t2.b=t4.b
+WHERE t1.a <= 2;
+a b a b a b a b
+1 3 3 3 NULL NULL NULL NULL
+2 2 3 3 NULL NULL NULL NULL
+1 3 4 2 1 2 3 2
+1 3 4 2 1 2 4 2
+2 2 4 2 1 2 3 2
+2 2 4 2 1 2 4 2
+1 3 5 3 NULL NULL NULL NULL
+2 2 5 3 NULL NULL NULL NULL
+SELECT t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b
+FROM t1, (t3, t4)
+RIGHT JOIN
+t2
+ON t3.a=1 AND t2.b=t4.b
+WHERE t1.a <= 2;
+a b a b a b a b
+1 3 3 3 NULL NULL NULL NULL
+2 2 3 3 NULL NULL NULL NULL
+1 3 4 2 1 2 3 2
+1 3 4 2 1 2 4 2
+2 2 4 2 1 2 3 2
+2 2 4 2 1 2 4 2
+1 3 5 3 NULL NULL NULL NULL
+2 2 5 3 NULL NULL NULL NULL
+SELECT t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b
+FROM t1, (t3, t4)
+RIGHT JOIN
+t2
+ON t3.a=1 AND t2.b=t4.b
+WHERE t1.a <= 2;
+a b a b a b a b
+1 3 3 3 NULL NULL NULL NULL
+2 2 3 3 NULL NULL NULL NULL
+1 3 4 2 1 2 3 2
+1 3 4 2 1 2 4 2
+2 2 4 2 1 2 3 2
+2 2 4 2 1 2 4 2
+1 3 5 3 NULL NULL NULL NULL
+2 2 5 3 NULL NULL NULL NULL
+EXPLAIN EXTENDED
+SELECT t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b
+FROM t1, (t3, t4)
+RIGHT JOIN
+t2
+ON t3.a=1 AND t2.b=t4.b
+WHERE t1.a <= 2;
+id select_type table type possible_keys key key_len ref rows filtered Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where
+1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (flat, BNL join)
+1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where
+1 SIMPLE t4 ALL NULL NULL NULL NULL 2 100.00 Using where
+Warnings:
+Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b` from `test`.`t1` join `test`.`t2` left join (`test`.`t3` join `test`.`t4`) on(`test`.`t3`.`a` = 1 and `test`.`t4`.`b` = `test`.`t2`.`b`) where `test`.`t1`.`a` <= 2
+INSERT INTO t2 VALUES (-1,9,0), (-3,10,0), (-2,8,0), (-4,11,0), (-5,15,0);
+CREATE INDEX idx_b ON t2(b);
+EXPLAIN EXTENDED
+SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b
+FROM (t3,t4)
+LEFT JOIN
+(t1,t2)
+ON t3.a=1 AND t3.b=t2.b AND t2.b=t4.b AND t2.a>0;
+id select_type table type possible_keys key key_len ref rows filtered Extra
+1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00
+1 SIMPLE t4 ALL NULL NULL NULL NULL 2 100.00 Using join buffer (flat, BNL join)
+1 SIMPLE t2 ref idx_b idx_b 5 test.t3.b 2 100.00 Using where
+1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00
+Warnings:
+Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b` from `test`.`t3` join `test`.`t4` left join (`test`.`t1` join `test`.`t2`) on(`test`.`t3`.`a` = 1 and `test`.`t4`.`b` = `test`.`t3`.`b` and `test`.`t2`.`b` = `test`.`t3`.`b` and `test`.`t2`.`a` > 0 and `test`.`t3`.`b` is not null) where 1
+SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b
+FROM (t3,t4)
+LEFT JOIN
+(t1,t2)
+ON t3.a=1 AND t3.b=t2.b AND t2.b=t4.b AND t2.a>0;
+a b a b a b
+4 2 1 2 3 2
+4 2 1 2 3 2
+4 2 1 2 3 2
+NULL NULL 2 2 3 2
+4 2 1 2 4 2
+4 2 1 2 4 2
+4 2 1 2 4 2
+NULL NULL 2 2 4 2
+EXPLAIN EXTENDED
+SELECT t0.a,t0.b,t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,
+t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b,t9.a,t9.b
+FROM t0,t1
+LEFT JOIN
+(
+t2
+LEFT JOIN
+(t3, t4)
+ON t3.a=1 AND t2.b=t4.b AND t2.a>0,
+t5
+LEFT JOIN
+(
+(t6, t7)
+LEFT JOIN
+t8
+ON t7.b=t8.b AND t6.b < 10
+)
+ON t6.b >= 2 AND t5.b=t7.b
+)
+ON (t3.b=2 OR t3.c IS NULL) AND (t6.b=2 OR t6.c IS NULL) AND
+(t1.b=t5.b OR t3.c IS NULL OR t6.c IS NULL or t8.c IS NULL) AND
+(t1.a != 2),
+t9
+WHERE t0.a=1 AND
+t0.b=t1.b AND
+(t2.a >= 4 OR t2.c IS NULL) AND
+(t3.a < 5 OR t3.c IS NULL) AND
+(t3.b=t4.b OR t3.c IS NULL OR t4.c IS NULL) AND
+(t5.a >=2 OR t5.c IS NULL) AND
+(t6.a >=4 OR t6.c IS NULL) AND
+(t7.a <= 2 OR t7.c IS NULL) AND
+(t8.a < 1 OR t8.c IS NULL) AND
+(t8.b=t9.b OR t8.c IS NULL) AND
+(t9.a=1);
+id select_type table type possible_keys key key_len ref rows filtered Extra
+1 SIMPLE t0 ALL NULL NULL NULL NULL 3 100.00 Using where
+1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join)
+1 SIMPLE t5 ALL NULL NULL NULL NULL 3 100.00 Using where
+1 SIMPLE t7 ALL NULL NULL NULL NULL 2 100.00 Using where
+1 SIMPLE t6 ALL NULL NULL NULL NULL 3 100.00 Using where
+1 SIMPLE t8 ALL NULL NULL NULL NULL 2 100.00 Using where
+1 SIMPLE t2 ALL NULL NULL NULL NULL 8 100.00 Using where
+1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where
+1 SIMPLE t4 ALL NULL NULL NULL NULL 2 100.00 Using where
+1 SIMPLE t9 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join)
+Warnings:
+Note 1003 select `test`.`t0`.`a` AS `a`,`test`.`t0`.`b` AS `b`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b`,`test`.`t5`.`a` AS `a`,`test`.`t5`.`b` AS `b`,`test`.`t6`.`a` AS `a`,`test`.`t6`.`b` AS `b`,`test`.`t7`.`a` AS `a`,`test`.`t7`.`b` AS `b`,`test`.`t8`.`a` AS `a`,`test`.`t8`.`b` AS `b`,`test`.`t9`.`a` AS `a`,`test`.`t9`.`b` AS `b` from `test`.`t0` join `test`.`t1` left join (`test`.`t2` left join (`test`.`t3` join `test`.`t4`) on(`test`.`t3`.`a` = 1 and `test`.`t4`.`b` = `test`.`t2`.`b` and `test`.`t2`.`a` > 0) join `test`.`t5` left join (`test`.`t6` join `test`.`t7` left join `test`.`t8` on(`test`.`t8`.`b` = `test`.`t5`.`b` and `test`.`t6`.`b` < 10)) on(`test`.`t7`.`b` = `test`.`t5`.`b` and `test`.`t6`.`b` >= 2)) on((`test`.`t3`.`b` = 2 or `test`.`t3`.`c` is null) and (`test`.`t6`.`b` = 2 or `test`.`t6`.`c` is null) and (`test`.`t5`.`b` = `test`.`t0`.`b` or `test`.`t3`.`c` is null or `test`.`t6`.`c` is null or `test`.`t8`.`c` is null) and `test`.`t1`.`a` <> 2) join `test`.`t9` where `test`.`t0`.`a` = 1 and `test`.`t1`.`b` = `test`.`t0`.`b` and `test`.`t9`.`a` = 1 and (`test`.`t2`.`a` >= 4 or `test`.`t2`.`c` is null) and (`test`.`t3`.`a` < 5 or `test`.`t3`.`c` is null) and (`test`.`t4`.`b` = `test`.`t3`.`b` or `test`.`t3`.`c` is null or `test`.`t4`.`c` is null) and (`test`.`t5`.`a` >= 2 or `test`.`t5`.`c` is null) and (`test`.`t6`.`a` >= 4 or `test`.`t6`.`c` is null) and (`test`.`t7`.`a` <= 2 or `test`.`t7`.`c` is null) and (`test`.`t8`.`a` < 1 or `test`.`t8`.`c` is null) and (`test`.`t9`.`b` = `test`.`t8`.`b` or `test`.`t8`.`c` is null)
+INSERT INTO t4 VALUES (-3,12,0), (-4,13,0), (-1,11,0), (-3,11,0), (-5,15,0);
+INSERT INTO t5 VALUES (-3,11,0), (-2,12,0), (-3,13,0), (-4,12,0);
+CREATE INDEX idx_b ON t4(b);
+CREATE INDEX idx_b ON t5(b);
+EXPLAIN EXTENDED
+SELECT t0.a,t0.b,t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,
+t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b,t9.a,t9.b
+FROM t0,t1
+LEFT JOIN
+(
+t2
+LEFT JOIN
+(t3, t4)
+ON t3.a=1 AND t2.b=t4.b AND t2.a>0 AND t4.a>0,
+t5
+LEFT JOIN
+(
+(t6, t7)
+LEFT JOIN
+t8
+ON t7.b=t8.b AND t6.b < 10
+)
+ON t6.b >= 2 AND t5.b=t7.b AND t5.a>0
+)
+ON (t3.b=2 OR t3.c IS NULL) AND (t6.b=2 OR t6.c IS NULL) AND
+(t1.b=t5.b OR t3.c IS NULL OR t6.c IS NULL or t8.c IS NULL) AND
+(t1.a != 2),
+t9
+WHERE t0.a=1 AND
+t0.b=t1.b AND
+(t2.a >= 4 OR t2.c IS NULL) AND
+(t3.a < 5 OR t3.c IS NULL) AND
+(t3.b=t4.b OR t3.c IS NULL OR t4.c IS NULL) AND
+(t5.a >=2 OR t5.c IS NULL) AND
+(t6.a >=4 OR t6.c IS NULL) AND
+(t7.a <= 2 OR t7.c IS NULL) AND
+(t8.a < 1 OR t8.c IS NULL) AND
+(t8.b=t9.b OR t8.c IS NULL) AND
+(t9.a=1);
+id select_type table type possible_keys key key_len ref rows filtered Extra
+1 SIMPLE t0 ALL NULL NULL NULL NULL 3 100.00 Using where
+1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join)
+1 SIMPLE t9 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join)
+1 SIMPLE t5 ALL idx_b NULL NULL NULL 7 100.00 Using where
+1 SIMPLE t7 ALL NULL NULL NULL NULL 2 100.00 Using where
+1 SIMPLE t6 ALL NULL NULL NULL NULL 3 100.00 Using where
+1 SIMPLE t8 ALL NULL NULL NULL NULL 2 100.00 Using where
+1 SIMPLE t2 ALL NULL NULL NULL NULL 8 100.00 Using where
+1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where
+1 SIMPLE t4 ref idx_b idx_b 5 test.t2.b 2 100.00 Using where
+Warnings:
+Note 1003 select `test`.`t0`.`a` AS `a`,`test`.`t0`.`b` AS `b`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b`,`test`.`t5`.`a` AS `a`,`test`.`t5`.`b` AS `b`,`test`.`t6`.`a` AS `a`,`test`.`t6`.`b` AS `b`,`test`.`t7`.`a` AS `a`,`test`.`t7`.`b` AS `b`,`test`.`t8`.`a` AS `a`,`test`.`t8`.`b` AS `b`,`test`.`t9`.`a` AS `a`,`test`.`t9`.`b` AS `b` from `test`.`t0` join `test`.`t1` left join (`test`.`t2` left join (`test`.`t3` join `test`.`t4`) on(`test`.`t3`.`a` = 1 and `test`.`t4`.`b` = `test`.`t2`.`b` and `test`.`t2`.`a` > 0 and `test`.`t4`.`a` > 0 and `test`.`t2`.`b` is not null) join `test`.`t5` left join (`test`.`t6` join `test`.`t7` left join `test`.`t8` on(`test`.`t8`.`b` = `test`.`t5`.`b` and `test`.`t6`.`b` < 10)) on(`test`.`t7`.`b` = `test`.`t5`.`b` and `test`.`t6`.`b` >= 2 and `test`.`t5`.`a` > 0)) on((`test`.`t3`.`b` = 2 or `test`.`t3`.`c` is null) and (`test`.`t6`.`b` = 2 or `test`.`t6`.`c` is null) and (`test`.`t5`.`b` = `test`.`t0`.`b` or `test`.`t3`.`c` is null or `test`.`t6`.`c` is null or `test`.`t8`.`c` is null) and `test`.`t1`.`a` <> 2) join `test`.`t9` where `test`.`t0`.`a` = 1 and `test`.`t1`.`b` = `test`.`t0`.`b` and `test`.`t9`.`a` = 1 and (`test`.`t2`.`a` >= 4 or `test`.`t2`.`c` is null) and (`test`.`t3`.`a` < 5 or `test`.`t3`.`c` is null) and (`test`.`t4`.`b` = `test`.`t3`.`b` or `test`.`t3`.`c` is null or `test`.`t4`.`c` is null) and (`test`.`t5`.`a` >= 2 or `test`.`t5`.`c` is null) and (`test`.`t6`.`a` >= 4 or `test`.`t6`.`c` is null) and (`test`.`t7`.`a` <= 2 or `test`.`t7`.`c` is null) and (`test`.`t8`.`a` < 1 or `test`.`t8`.`c` is null) and (`test`.`t8`.`b` = `test`.`t9`.`b` or `test`.`t8`.`c` is null)
+INSERT INTO t8 VALUES (-3,12,0), (-1,14,0), (-5,15,0), (-1,11,0), (-4,13,0);
+CREATE INDEX idx_b ON t8(b);
+EXPLAIN EXTENDED
+SELECT t0.a,t0.b,t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,
+t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b,t9.a,t9.b
+FROM t0,t1
+LEFT JOIN
+(
+t2
+LEFT JOIN
+(t3, t4)
+ON t3.a=1 AND t2.b=t4.b AND t2.a>0 AND t4.a>0,
+t5
+LEFT JOIN
+(
+(t6, t7)
+LEFT JOIN
+t8
+ON t7.b=t8.b AND t6.b < 10 AND t8.a>=0
+)
+ON t6.b >= 2 AND t5.b=t7.b AND t5.a>0
+)
+ON (t3.b=2 OR t3.c IS NULL) AND (t6.b=2 OR t6.c IS NULL) AND
+(t1.b=t5.b OR t3.c IS NULL OR t6.c IS NULL or t8.c IS NULL) AND
+(t1.a != 2),
+t9
+WHERE t0.a=1 AND
+t0.b=t1.b AND
+(t2.a >= 4 OR t2.c IS NULL) AND
+(t3.a < 5 OR t3.c IS NULL) AND
+(t3.b=t4.b OR t3.c IS NULL OR t4.c IS NULL) AND
+(t5.a >=2 OR t5.c IS NULL) AND
+(t6.a >=4 OR t6.c IS NULL) AND
+(t7.a <= 2 OR t7.c IS NULL) AND
+(t8.a < 1 OR t8.c IS NULL) AND
+(t8.b=t9.b OR t8.c IS NULL) AND
+(t9.a=1);
+id select_type table type possible_keys key key_len ref rows filtered Extra
+1 SIMPLE t0 ALL NULL NULL NULL NULL 3 100.00 Using where
+1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join)
+1 SIMPLE t9 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join)
+1 SIMPLE t5 ALL idx_b NULL NULL NULL 7 100.00 Using where
+1 SIMPLE t7 ALL NULL NULL NULL NULL 2 100.00 Using where
+1 SIMPLE t6 ALL NULL NULL NULL NULL 3 100.00 Using where
+1 SIMPLE t8 ref idx_b idx_b 5 test.t5.b 2 100.00 Using where
+1 SIMPLE t2 ALL NULL NULL NULL NULL 8 100.00 Using where
+1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where
+1 SIMPLE t4 ref idx_b idx_b 5 test.t2.b 2 100.00 Using where
+Warnings:
+Note 1003 select `test`.`t0`.`a` AS `a`,`test`.`t0`.`b` AS `b`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b`,`test`.`t5`.`a` AS `a`,`test`.`t5`.`b` AS `b`,`test`.`t6`.`a` AS `a`,`test`.`t6`.`b` AS `b`,`test`.`t7`.`a` AS `a`,`test`.`t7`.`b` AS `b`,`test`.`t8`.`a` AS `a`,`test`.`t8`.`b` AS `b`,`test`.`t9`.`a` AS `a`,`test`.`t9`.`b` AS `b` from `test`.`t0` join `test`.`t1` left join (`test`.`t2` left join (`test`.`t3` join `test`.`t4`) on(`test`.`t3`.`a` = 1 and `test`.`t4`.`b` = `test`.`t2`.`b` and `test`.`t2`.`a` > 0 and `test`.`t4`.`a` > 0 and `test`.`t2`.`b` is not null) join `test`.`t5` left join (`test`.`t6` join `test`.`t7` left join `test`.`t8` on(`test`.`t8`.`b` = `test`.`t5`.`b` and `test`.`t6`.`b` < 10 and `test`.`t8`.`a` >= 0 and `test`.`t5`.`b` is not null)) on(`test`.`t7`.`b` = `test`.`t5`.`b` and `test`.`t6`.`b` >= 2 and `test`.`t5`.`a` > 0)) on((`test`.`t3`.`b` = 2 or `test`.`t3`.`c` is null) and (`test`.`t6`.`b` = 2 or `test`.`t6`.`c` is null) and (`test`.`t5`.`b` = `test`.`t0`.`b` or `test`.`t3`.`c` is null or `test`.`t6`.`c` is null or `test`.`t8`.`c` is null) and `test`.`t1`.`a` <> 2) join `test`.`t9` where `test`.`t0`.`a` = 1 and `test`.`t1`.`b` = `test`.`t0`.`b` and `test`.`t9`.`a` = 1 and (`test`.`t2`.`a` >= 4 or `test`.`t2`.`c` is null) and (`test`.`t3`.`a` < 5 or `test`.`t3`.`c` is null) and (`test`.`t4`.`b` = `test`.`t3`.`b` or `test`.`t3`.`c` is null or `test`.`t4`.`c` is null) and (`test`.`t5`.`a` >= 2 or `test`.`t5`.`c` is null) and (`test`.`t6`.`a` >= 4 or `test`.`t6`.`c` is null) and (`test`.`t7`.`a` <= 2 or `test`.`t7`.`c` is null) and (`test`.`t8`.`a` < 1 or `test`.`t8`.`c` is null) and (`test`.`t8`.`b` = `test`.`t9`.`b` or `test`.`t8`.`c` is null)
+INSERT INTO t1 VALUES (-1,133,0), (-2,12,0), (-3,11,0), (-5,15,0);
+CREATE INDEX idx_b ON t1(b);
+CREATE INDEX idx_a ON t0(a);
+EXPLAIN EXTENDED
+SELECT t0.a,t0.b,t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,
+t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b,t9.a,t9.b
+FROM t0,t1
+LEFT JOIN
+(
+t2
+LEFT JOIN
+(t3, t4)
+ON t3.a=1 AND t2.b=t4.b,
+t5
+LEFT JOIN
+(
+(t6, t7)
+LEFT JOIN
+t8
+ON t7.b=t8.b AND t6.b < 10
+)
+ON t6.b >= 2 AND t5.b=t7.b
+)
+ON (t3.b=2 OR t3.c IS NULL) AND (t6.b=2 OR t6.c IS NULL) AND
+(t1.b=t5.b OR t3.c IS NULL OR t6.c IS NULL or t8.c IS NULL) AND
+(t1.a != 2) AND t1.a>0,
+t9
+WHERE t0.a=1 AND
+t0.b=t1.b AND
+(t2.a >= 4 OR t2.c IS NULL) AND
+(t3.a < 5 OR t3.c IS NULL) AND
+(t3.b=t4.b OR t3.c IS NULL OR t4.c IS NULL) AND
+(t5.a >=2 OR t5.c IS NULL) AND
+(t6.a >=4 OR t6.c IS NULL) AND
+(t7.a <= 2 OR t7.c IS NULL) AND
+(t8.a < 1 OR t8.c IS NULL) AND
+(t8.b=t9.b OR t8.c IS NULL) AND
+(t9.a=1);
+id select_type table type possible_keys key key_len ref rows filtered Extra
+1 SIMPLE t0 ref idx_a idx_a 5 const 2 100.00
+1 SIMPLE t9 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join)
+1 SIMPLE t1 ALL idx_b NULL NULL NULL 7 100.00 Using where; Using join buffer (flat, BNL join)
+1 SIMPLE t5 ALL idx_b NULL NULL NULL 7 100.00 Using where
+1 SIMPLE t7 ALL NULL NULL NULL NULL 2 100.00 Using where
+1 SIMPLE t6 ALL NULL NULL NULL NULL 3 100.00 Using where
+1 SIMPLE t8 ref idx_b idx_b 5 test.t5.b 2 100.00 Using where
+1 SIMPLE t2 ALL NULL NULL NULL NULL 8 100.00 Using where
+1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where
+1 SIMPLE t4 ref idx_b idx_b 5 test.t2.b 2 100.00 Using where
+Warnings:
+Note 1003 select `test`.`t0`.`a` AS `a`,`test`.`t0`.`b` AS `b`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b`,`test`.`t5`.`a` AS `a`,`test`.`t5`.`b` AS `b`,`test`.`t6`.`a` AS `a`,`test`.`t6`.`b` AS `b`,`test`.`t7`.`a` AS `a`,`test`.`t7`.`b` AS `b`,`test`.`t8`.`a` AS `a`,`test`.`t8`.`b` AS `b`,`test`.`t9`.`a` AS `a`,`test`.`t9`.`b` AS `b` from `test`.`t0` join `test`.`t1` left join (`test`.`t2` left join (`test`.`t3` join `test`.`t4`) on(`test`.`t3`.`a` = 1 and `test`.`t4`.`b` = `test`.`t2`.`b` and `test`.`t2`.`b` is not null) join `test`.`t5` left join (`test`.`t6` join `test`.`t7` left join `test`.`t8` on(`test`.`t8`.`b` = `test`.`t5`.`b` and `test`.`t6`.`b` < 10 and `test`.`t5`.`b` is not null)) on(`test`.`t7`.`b` = `test`.`t5`.`b` and `test`.`t6`.`b` >= 2)) on((`test`.`t3`.`b` = 2 or `test`.`t3`.`c` is null) and (`test`.`t6`.`b` = 2 or `test`.`t6`.`c` is null) and (`test`.`t5`.`b` = `test`.`t0`.`b` or `test`.`t3`.`c` is null or `test`.`t6`.`c` is null or `test`.`t8`.`c` is null) and `test`.`t1`.`a` <> 2 and `test`.`t1`.`a` > 0) join `test`.`t9` where `test`.`t0`.`a` = 1 and `test`.`t1`.`b` = `test`.`t0`.`b` and `test`.`t9`.`a` = 1 and (`test`.`t2`.`a` >= 4 or `test`.`t2`.`c` is null) and (`test`.`t3`.`a` < 5 or `test`.`t3`.`c` is null) and (`test`.`t4`.`b` = `test`.`t3`.`b` or `test`.`t3`.`c` is null or `test`.`t4`.`c` is null) and (`test`.`t5`.`a` >= 2 or `test`.`t5`.`c` is null) and (`test`.`t6`.`a` >= 4 or `test`.`t6`.`c` is null) and (`test`.`t7`.`a` <= 2 or `test`.`t7`.`c` is null) and (`test`.`t8`.`a` < 1 or `test`.`t8`.`c` is null) and (`test`.`t8`.`b` = `test`.`t9`.`b` or `test`.`t8`.`c` is null)
+SELECT t0.a,t0.b,t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,
+t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b,t9.a,t9.b
+FROM t0,t1
+LEFT JOIN
+(
+t2
+LEFT JOIN
+(t3, t4)
+ON t3.a=1 AND t2.b=t4.b,
+t5
+LEFT JOIN
+(
+(t6, t7)
+LEFT JOIN
+t8
+ON t7.b=t8.b AND t6.b < 10
+)
+ON t6.b >= 2 AND t5.b=t7.b
+)
+ON (t3.b=2 OR t3.c IS NULL) AND (t6.b=2 OR t6.c IS NULL) AND
+(t1.b=t5.b OR t3.c IS NULL OR t6.c IS NULL or t8.c IS NULL) AND
+(t1.a != 2) AND t1.a>0,
+t9
+WHERE t0.a=1 AND
+t0.b=t1.b AND
+(t2.a >= 4 OR t2.c IS NULL) AND
+(t3.a < 5 OR t3.c IS NULL) AND
+(t3.b=t4.b OR t3.c IS NULL OR t4.c IS NULL) AND
+(t5.a >=2 OR t5.c IS NULL) AND
+(t6.a >=4 OR t6.c IS NULL) AND
+(t7.a <= 2 OR t7.c IS NULL) AND
+(t8.a < 1 OR t8.c IS NULL) AND
+(t8.b=t9.b OR t8.c IS NULL) AND
+(t9.a=1);
+a b a b a b a b a b a b a b a b a b a b
+1 2 2 2 NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL 1 1
+1 2 2 2 NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL 1 2
+1 2 3 2 4 2 1 2 3 2 2 2 6 2 2 2 0 2 1 2
+1 2 3 2 4 2 1 2 3 2 3 1 6 2 1 1 NULL NULL 1 1
+1 2 3 2 4 2 1 2 3 2 3 1 6 2 1 1 NULL NULL 1 2
+1 2 3 2 4 2 1 2 3 2 3 3 NULL NULL NULL NULL NULL NULL 1 1
+1 2 3 2 4 2 1 2 3 2 3 3 NULL NULL NULL NULL NULL NULL 1 2
+1 2 3 2 4 2 1 2 4 2 2 2 6 2 2 2 0 2 1 2
+1 2 3 2 4 2 1 2 4 2 3 1 6 2 1 1 NULL NULL 1 1
+1 2 3 2 4 2 1 2 4 2 3 1 6 2 1 1 NULL NULL 1 2
+1 2 3 2 4 2 1 2 4 2 3 3 NULL NULL NULL NULL NULL NULL 1 1
+1 2 3 2 4 2 1 2 4 2 3 3 NULL NULL NULL NULL NULL NULL 1 2
+1 2 3 2 5 3 NULL NULL NULL NULL 2 2 6 2 2 2 0 2 1 2
+1 2 3 2 5 3 NULL NULL NULL NULL 3 1 6 2 1 1 NULL NULL 1 1
+1 2 3 2 5 3 NULL NULL NULL NULL 3 1 6 2 1 1 NULL NULL 1 2
+1 2 3 2 5 3 NULL NULL NULL NULL 3 3 NULL NULL NULL NULL NULL NULL 1 1
+1 2 3 2 5 3 NULL NULL NULL NULL 3 3 NULL NULL NULL NULL NULL NULL 1 2
+SELECT t2.a,t2.b
+FROM t2;
+a b
+3 3
+4 2
+5 3
+-1 9
+-3 10
+-2 8
+-4 11
+-5 15
+SELECT t3.a,t3.b
+FROM t3;
+a b
+1 2
+2 2
+SELECT t2.a,t2.b,t3.a,t3.b
+FROM t2 LEFT JOIN t3 ON t2.b=t3.b
+WHERE t2.a = 4 OR (t2.a > 4 AND t3.a IS NULL);
+a b a b
+4 2 1 2
+4 2 2 2
+5 3 NULL NULL
+SELECT t2.a,t2.b,t3.a,t3.b
+FROM t2 LEFT JOIN t3 ON t2.b=t3.b
+WHERE t2.a = 4 OR (t2.a > 4 AND t3.a IS NULL);
+a b a b
+4 2 1 2
+4 2 2 2
+5 3 NULL NULL
+ALTER TABLE t3
+CHANGE COLUMN a a1 int,
+CHANGE COLUMN c c1 int;
+SELECT t2.a,t2.b,t3.a1,t3.b
+FROM t2 LEFT JOIN t3 ON t2.b=t3.b
+WHERE t2.a = 4 OR (t2.a > 4 AND t3.a1 IS NULL);
+a b a1 b
+4 2 1 2
+4 2 2 2
+5 3 NULL NULL
+SELECT t2.a,t2.b,t3.a1,t3.b
+FROM t2 NATURAL LEFT JOIN t3
+WHERE t2.a = 4 OR (t2.a > 4 AND t3.a1 IS NULL);
+a b a1 b
+4 2 1 2
+4 2 2 2
+5 3 NULL NULL
+DROP TABLE t0,t1,t2,t3,t4,t5,t6,t7,t8,t9;
+CREATE TABLE t1 (a int);
+CREATE TABLE t2 (a int);
+CREATE TABLE t3 (a int);
+INSERT INTO t1 VALUES (1);
+INSERT INTO t2 VALUES (2);
+INSERT INTO t3 VALUES (2);
+INSERT INTO t1 VALUES (2);
+SELECT * FROM t1 LEFT JOIN (t2 LEFT JOIN t3 ON t2.a=t3.a) ON t1.a=t3.a;
+a a a
+1 NULL NULL
+2 2 2
+SELECT * FROM t1 LEFT JOIN t2 LEFT JOIN t3 ON t2.a=t3.a ON t1.a=t3.a;
+a a a
+1 NULL NULL
+2 2 2
+DELETE FROM t1 WHERE a=2;
+SELECT * FROM t1 LEFT JOIN t2 LEFT JOIN t3 ON t2.a=t3.a ON t1.a=t3.a;
+a a a
+1 NULL NULL
+DELETE FROM t2;
+SELECT * FROM t1 LEFT JOIN t2 LEFT JOIN t3 ON t2.a=t3.a ON t1.a=t3.a;
+a a a
+1 NULL NULL
+DROP TABLE t1,t2,t3;
+CREATE TABLE t1(a int, key (a));
+CREATE TABLE t2(b int, key (b));
+CREATE TABLE t3(c int, key (c));
+INSERT INTO t1 VALUES (NULL), (0), (1), (2), (3), (4), (5), (6), (7), (8), (9),
+(10), (11), (12), (13), (14), (15), (16), (17), (18), (19);
+INSERT INTO t2 VALUES (NULL), (0), (1), (2), (3), (4), (5), (6), (7), (8), (9),
+(10), (11), (12), (13), (14), (15), (16), (17), (18), (19);
+INSERT INTO t3 VALUES (0), (1), (2), (3), (4), (5);
+EXPLAIN SELECT a, b, c FROM t1 LEFT JOIN (t2, t3) ON c < 3 and b = c;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 index NULL a 5 NULL 21 Using index
+1 SIMPLE t2 range b b 5 NULL 3 Using where; Using index
+1 SIMPLE t3 ref c c 5 test.t2.b 2 Using index
+EXPLAIN SELECT a, b, c FROM t1 LEFT JOIN (t2, t3) ON b < 3 and b = c;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 index NULL a 5 NULL 21 Using index
+1 SIMPLE t2 range b b 5 NULL 3 Using where; Using index
+1 SIMPLE t3 ref c c 5 test.t2.b 2 Using index
+SELECT a, b, c FROM t1 LEFT JOIN (t2, t3) ON b < 3 and b = c;
+a b c
+NULL 0 0
+NULL 1 1
+NULL 2 2
+0 0 0
+0 1 1
+0 2 2
+1 0 0
+1 1 1
+1 2 2
+2 0 0
+2 1 1
+2 2 2
+3 0 0
+3 1 1
+3 2 2
+4 0 0
+4 1 1
+4 2 2
+5 0 0
+5 1 1
+5 2 2
+6 0 0
+6 1 1
+6 2 2
+7 0 0
+7 1 1
+7 2 2
+8 0 0
+8 1 1
+8 2 2
+9 0 0
+9 1 1
+9 2 2
+10 0 0
+10 1 1
+10 2 2
+11 0 0
+11 1 1
+11 2 2
+12 0 0
+12 1 1
+12 2 2
+13 0 0
+13 1 1
+13 2 2
+14 0 0
+14 1 1
+14 2 2
+15 0 0
+15 1 1
+15 2 2
+16 0 0
+16 1 1
+16 2 2
+17 0 0
+17 1 1
+17 2 2
+18 0 0
+18 1 1
+18 2 2
+19 0 0
+19 1 1
+19 2 2
+DELETE FROM t3;
+EXPLAIN SELECT a, b, c FROM t1 LEFT JOIN (t2, t3) ON b < 3 and b = c;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t3 const c NULL NULL NULL 1 Impossible ON condition
+1 SIMPLE t2 const b NULL NULL NULL 1 Impossible ON condition
+1 SIMPLE t1 index NULL a 5 NULL 21 Using index
+SELECT a, b, c FROM t1 LEFT JOIN (t2, t3) ON b < 3 and b = c;
+a b c
+NULL NULL NULL
+0 NULL NULL
+1 NULL NULL
+2 NULL NULL
+3 NULL NULL
+4 NULL NULL
+5 NULL NULL
+6 NULL NULL
+7 NULL NULL
+8 NULL NULL
+9 NULL NULL
+10 NULL NULL
+11 NULL NULL
+12 NULL NULL
+13 NULL NULL
+14 NULL NULL
+15 NULL NULL
+16 NULL NULL
+17 NULL NULL
+18 NULL NULL
+19 NULL NULL
+DROP TABLE t1,t2,t3;
+CREATE TABLE t1 (c11 int);
+CREATE TABLE t2 (c21 int);
+CREATE TABLE t3 (c31 int);
+INSERT INTO t1 VALUES (4), (5);
+SELECT * FROM t1 LEFT JOIN t2 ON c11=c21;
+c11 c21
+4 NULL
+5 NULL
+EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON c11=c21;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t2 system NULL NULL NULL NULL 0 Const row not found
+1 SIMPLE t1 ALL NULL NULL NULL NULL 2
+SELECT * FROM t1 LEFT JOIN (t2 LEFT JOIN t3 ON c21=c31) ON c11=c21;
+c11 c21 c31
+4 NULL NULL
+5 NULL NULL
+EXPLAIN SELECT * FROM t1 LEFT JOIN (t2 LEFT JOIN t3 ON c21=c31) ON c11=c21;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 2
+1 SIMPLE t2 ALL NULL NULL NULL NULL 0 Using where
+1 SIMPLE t3 ALL NULL NULL NULL NULL 0 Using where
+DROP TABLE t1,t2,t3;
+CREATE TABLE t1 (goods int(12) NOT NULL, price varchar(128) NOT NULL);
+INSERT INTO t1 VALUES (23, 2340), (26, 9900);
+CREATE TABLE t2 (goods int(12), name varchar(50), shop char(2));
+INSERT INTO t2 VALUES (23, 'as300', 'fr'), (26, 'as600', 'fr');
+create table t3 (groupid int(12) NOT NULL, goodsid int(12) NOT NULL);
+INSERT INTO t3 VALUES (3,23), (6,26);
+CREATE TABLE t4 (groupid int(12));
+INSERT INTO t4 VALUES (1), (2), (3), (4), (5), (6);
+SELECT * FROM
+(SELECT DISTINCT gl.groupid, gp.price
+FROM t4 gl
+LEFT JOIN
+(t3 g INNER JOIN t2 p ON g.goodsid = p.goods
+INNER JOIN t1 gp ON p.goods = gp.goods)
+ON gl.groupid = g.groupid and p.shop = 'fr') t;
+groupid price
+1 NULL
+2 NULL
+3 2340
+4 NULL
+5 NULL
+6 9900
+CREATE VIEW v1 AS
+SELECT g.groupid groupid, p.goods goods,
+p.name name, p.shop shop,
+gp.price price
+FROM t3 g INNER JOIN t2 p ON g.goodsid = p.goods
+INNER JOIN t1 gp on p.goods = gp.goods;
+CREATE VIEW v2 AS
+SELECT DISTINCT g.groupid, fr.price
+FROM t4 g
+LEFT JOIN
+v1 fr on g.groupid = fr.groupid and fr.shop = 'fr';
+SELECT * FROM v2;
+groupid price
+1 NULL
+2 NULL
+3 2340
+4 NULL
+5 NULL
+6 9900
+SELECT * FROM
+(SELECT DISTINCT g.groupid, fr.price
+FROM t4 g
+LEFT JOIN
+v1 fr on g.groupid = fr.groupid and fr.shop = 'fr') t;
+groupid price
+1 NULL
+2 NULL
+3 2340
+4 NULL
+5 NULL
+6 9900
+DROP VIEW v1,v2;
+DROP TABLE t1,t2,t3,t4;
+CREATE TABLE t1(a int);
+CREATE TABLE t2(b int);
+CREATE TABLE t3(c int, d int);
+CREATE TABLE t4(d int);
+CREATE TABLE t5(e int, f int);
+CREATE TABLE t6(f int);
+CREATE VIEW v1 AS
+SELECT e FROM t5 JOIN t6 ON t5.e=t6.f;
+CREATE VIEW v2 AS
+SELECT e FROM t5 NATURAL JOIN t6;
+SELECT t1.a FROM t1 JOIN t2 ON a=b JOIN t3 ON a=c JOIN t4 USING(d);
+a
+SELECT t1.x FROM t1 JOIN t2 ON a=b JOIN t3 ON a=c JOIN t4 USING(d);
+ERROR 42S22: Unknown column 't1.x' in 'field list'
+SELECT t1.a FROM t1 JOIN t2 ON a=b JOIN t3 ON a=c NATURAL JOIN t4;
+a
+SELECT t1.x FROM t1 JOIN t2 ON a=b JOIN t3 ON a=c NATURAL JOIN t4;
+ERROR 42S22: Unknown column 't1.x' in 'field list'
+SELECT v1.e FROM v1 JOIN t2 ON e=b JOIN t3 ON e=c JOIN t4 USING(d);
+e
+SELECT v1.x FROM v1 JOIN t2 ON e=b JOIN t3 ON e=c JOIN t4 USING(d);
+ERROR 42S22: Unknown column 'v1.x' in 'field list'
+SELECT v2.e FROM v2 JOIN t2 ON e=b JOIN t3 ON e=c JOIN t4 USING(d);
+e
+SELECT v2.x FROM v2 JOIN t2 ON e=b JOIN t3 ON e=c JOIN t4 USING(d);
+ERROR 42S22: Unknown column 'v2.x' in 'field list'
+DROP VIEW v1, v2;
+DROP TABLE t1, t2, t3, t4, t5, t6;
+create table t1 (id1 int(11) not null);
+insert into t1 values (1),(2);
+create table t2 (id2 int(11) not null);
+insert into t2 values (1),(2),(3),(4);
+create table t3 (id3 char(16) not null);
+insert into t3 values ('100');
+create table t4 (id2 int(11) not null, id3 char(16));
+create table t5 (id1 int(11) not null, key (id1));
+insert into t5 values (1),(2),(1);
+create view v1 as
+select t4.id3 from t4 join t2 on t4.id2 = t2.id2;
+select t1.id1 from t1 inner join (t3 left join v1 on t3.id3 = v1.id3);
+id1
+1
+2
+drop view v1;
+drop table t1, t2, t3, t4, t5;
+create table t0 (a int);
+insert into t0 values (0),(1),(2),(3);
+create table t1(a int);
+insert into t1 select A.a + 10*(B.a) from t0 A, t0 B;
+create table t2 (a int, b int);
+insert into t2 values (1,1), (2,2), (3,3);
+create table t3(a int, b int, filler char(200), key(a));
+insert into t3 select a,a,'filler' from t1;
+insert into t3 select a,a,'filler' from t1;
+create table t4 like t3;
+insert into t4 select * from t3;
+insert into t4 select * from t3;
+create table t5 like t4;
+insert into t5 select * from t4;
+insert into t5 select * from t4;
+create table t6 like t5;
+insert into t6 select * from t5;
+insert into t6 select * from t5;
+create table t7 like t6;
+insert into t7 select * from t6;
+insert into t7 select * from t6;
+explain select * from t4 join
+t2 left join (t3 join t5 on t5.a=t3.b) on t3.a=t2.b where t4.a<=>t3.b;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t2 ALL NULL NULL NULL NULL X
+1 SIMPLE t3 ref a a 5 test.t2.b X Using where
+1 SIMPLE t5 ref a a 5 test.t3.b X
+1 SIMPLE t4 ref a a 5 test.t3.b X Using index condition
+explain select * from (t4 join t6 on t6.a=t4.b) right join t3 on t4.a=t3.b
+join t2 left join (t5 join t7 on t7.a=t5.b) on t5.a=t2.b where t3.a<=>t2.b;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t2 ALL NULL NULL NULL NULL X
+1 SIMPLE t3 ref a a 5 test.t2.b X Using index condition
+1 SIMPLE t4 ref a a 5 test.t3.b X Using where
+1 SIMPLE t6 ref a a 5 test.t4.b X
+1 SIMPLE t5 ref a a 5 test.t2.b X Using where
+1 SIMPLE t7 ref a a 5 test.t5.b X
+explain select * from t2 left join
+(t3 left join (t4 join t6 on t6.a=t4.b) on t4.a=t3.b
+join t5 on t5.a=t3.b) on t3.a=t2.b;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t2 ALL NULL NULL NULL NULL X
+1 SIMPLE t3 ref a a 5 test.t2.b X Using where
+1 SIMPLE t4 ref a a 5 test.t3.b X Using where
+1 SIMPLE t6 ref a a 5 test.t4.b X
+1 SIMPLE t5 ref a a 5 test.t3.b X
+drop table t0, t1, t2, t3, t4, t5, t6, t7;
+create table t1 (a int);
+insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
+create table t2 (a int, filler char(100), key(a));
+insert into t2 select A.a + 10*B.a, '' from t1 A, t1 B;
+create table t3 like t2;
+insert into t3 select * from t2;
+explain select * from t1 left join
+(t2 left join t3 on (t2.a = t3.a))
+on (t1.a = t2.a);
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 10
+1 SIMPLE t2 ref a a 5 test.t1.a 1 Using where
+1 SIMPLE t3 ref a a 5 test.t1.a 1 Using where
+drop table t1, t2, t3;
+CREATE TABLE t1 (id int NOT NULL PRIMARY KEY, type varchar(10));
+CREATE TABLE t2 (pid int NOT NULL PRIMARY KEY, type varchar(10));
+CREATE TABLE t3 (cid int NOT NULL PRIMARY KEY,
+id int NOT NULL,
+pid int NOT NULL);
+INSERT INTO t1 VALUES (1, 'A'), (3, 'C');
+INSERT INTO t2 VALUES (1, 'A'), (3, 'C');
+INSERT INTO t3 VALUES (1, 1, 1), (3, 3, 3);
+SELECT * FROM t1 p LEFT JOIN (t3 JOIN t1)
+ON (t1.id=t3.id AND t1.type='B' AND p.id=t3.id)
+LEFT JOIN t2 ON (t3.pid=t2.pid)
+WHERE p.id=1;
+id type cid id pid id type pid type
+1 A NULL NULL NULL NULL NULL NULL NULL
+CREATE VIEW v1 AS
+SELECT t3.* FROM t3 JOIN t1 ON t1.id=t3.id AND t1.type='B';
+SELECT * FROM t1 p LEFT JOIN v1 ON p.id=v1.id
+LEFT JOIN t2 ON v1.pid=t2.pid
+WHERE p.id=1;
+id type cid id pid pid type
+1 A NULL NULL NULL NULL NULL
+DROP VIEW v1;
+DROP TABLE t1,t2,t3;
+CREATE TABLE t1 (id1 int PRIMARY KEY, id2 int);
+CREATE TABLE t2 (id1 int PRIMARY KEY, id2 int);
+CREATE TABLE t3 (id1 int PRIMARY KEY, id2 int);
+CREATE TABLE t4 (id1 int PRIMARY KEY, id2 int);
+CREATE TABLE t5 (id1 int PRIMARY KEY, id2 int);
+SELECT t1.id1 AS id, t5.id1 AS ngroupbynsa
+FROM t1 INNER JOIN t2 ON t2.id2 = t1.id1
+LEFT OUTER JOIN
+(t3 INNER JOIN t4 ON t4.id1 = t3.id2 INNER JOIN t5 ON t4.id2 = t5.id1)
+ON t3.id2 IS NOT NULL
+WHERE t1.id1=2;
+id ngroupbynsa
+PREPARE stmt FROM
+"SELECT t1.id1 AS id, t5.id1 AS ngroupbynsa
+ FROM t1 INNER JOIN t2 ON t2.id2 = t1.id1
+ LEFT OUTER JOIN
+ (t3 INNER JOIN t4 ON t4.id1 = t3.id2 INNER JOIN t5 ON t4.id2 = t5.id1)
+ ON t3.id2 IS NOT NULL
+ WHERE t1.id1=2";
+EXECUTE stmt;
+id ngroupbynsa
+EXECUTE stmt;
+id ngroupbynsa
+EXECUTE stmt;
+id ngroupbynsa
+EXECUTE stmt;
+id ngroupbynsa
+INSERT INTO t1 VALUES (1,1), (2,1), (3,2);
+INSERT INTO t2 VALUES (2,1), (3,2), (4,3);
+INSERT INTO t3 VALUES (1,1), (3,2), (2,NULL);
+INSERT INTO t4 VALUES (1,1), (2,1), (3,3);
+INSERT INTO t5 VALUES (1,1), (2,2), (3,3), (4,3);
+EXECUTE stmt;
+id ngroupbynsa
+2 1
+2 1
+EXECUTE stmt;
+id ngroupbynsa
+2 1
+2 1
+EXECUTE stmt;
+id ngroupbynsa
+2 1
+2 1
+EXECUTE stmt;
+id ngroupbynsa
+2 1
+2 1
+SELECT t1.id1 AS id, t5.id1 AS ngroupbynsa
+FROM t1 INNER JOIN t2 ON t2.id2 = t1.id1
+LEFT OUTER JOIN
+(t3 INNER JOIN t4 ON t4.id1 = t3.id2 INNER JOIN t5 ON t4.id2 = t5.id1)
+ON t3.id2 IS NOT NULL
+WHERE t1.id1=2;
+id ngroupbynsa
+2 1
+2 1
+DROP TABLE t1,t2,t3,t4,t5;
+CREATE TABLE t1 (
+id int NOT NULL PRIMARY KEY,
+ct int DEFAULT NULL,
+pc int DEFAULT NULL,
+INDEX idx_ct (ct),
+INDEX idx_pc (pc)
+);
+INSERT INTO t1 VALUES
+(1,NULL,NULL),(2,NULL,NULL),(3,NULL,NULL),(4,NULL,NULL),(5,NULL,NULL);
+CREATE TABLE t2 (
+id int NOT NULL PRIMARY KEY,
+sr int NOT NULL,
+nm varchar(255) NOT NULL,
+INDEX idx_sr (sr)
+);
+INSERT INTO t2 VALUES
+(2441905,4308,'LesAbymes'),(2441906,4308,'Anse-Bertrand');
+CREATE TABLE t3 (
+id int NOT NULL PRIMARY KEY,
+ct int NOT NULL,
+ln int NOT NULL,
+INDEX idx_ct (ct),
+INDEX idx_ln (ln)
+);
+CREATE TABLE t4 (
+id int NOT NULL PRIMARY KEY,
+nm varchar(255) NOT NULL
+);
+INSERT INTO t4 VALUES (4308,'Guadeloupe'),(4309,'Martinique');
+SELECT t1.*
+FROM t1 LEFT JOIN
+(t2 LEFT JOIN t3 ON t3.ct=t2.id AND t3.ln='5') ON t1.ct=t2.id
+WHERE t1.id='5';
+id ct pc
+5 NULL NULL
+SELECT t1.*, t4.nm
+FROM t1 LEFT JOIN
+(t2 LEFT JOIN t3 ON t3.ct=t2.id AND t3.ln='5') ON t1.ct=t2.id
+LEFT JOIN t4 ON t2.sr=t4.id
+WHERE t1.id='5';
+id ct pc nm
+5 NULL NULL NULL
+DROP TABLE t1,t2,t3,t4;
+CREATE TABLE t1 (a INT, b INT);
+CREATE TABLE t2 (a INT);
+CREATE TABLE t3 (a INT, c INT);
+CREATE TABLE t4 (a INT, c INT);
+CREATE TABLE t5 (a INT, c INT);
+SELECT b FROM t1 JOIN (t2 LEFT JOIN t3 USING (a) LEFT JOIN t4 USING (a)
+LEFT JOIN t5 USING (a)) USING (a);
+b
+SELECT c FROM t1 JOIN (t2 LEFT JOIN t3 USING (a) LEFT JOIN t4 USING (a)
+LEFT JOIN t5 USING (a)) USING (a);
+ERROR 23000: Column 'c' in field list is ambiguous
+SELECT b FROM t1 JOIN (t2 JOIN t3 USING (a) JOIN t4 USING (a)
+JOIN t5 USING (a)) USING (a);
+b
+SELECT c FROM t1 JOIN (t2 JOIN t3 USING (a) JOIN t4 USING (a)
+JOIN t5 USING (a)) USING (a);
+ERROR 23000: Column 'c' in field list is ambiguous
+DROP TABLE t1,t2,t3,t4,t5;
+CREATE TABLE t1 (a INT, b INT);
+CREATE TABLE t2 (a INT, b INT);
+CREATE TABLE t3 (a INT, b INT);
+INSERT INTO t1 VALUES (1,1);
+INSERT INTO t2 VALUES (1,1);
+INSERT INTO t3 VALUES (1,1);
+SELECT * FROM t1 JOIN (t2 JOIN t3 USING (b)) USING (a);
+ERROR 23000: Column 'a' in from clause is ambiguous
+DROP TABLE t1,t2,t3;
+CREATE TABLE t1 (
+carrier char(2) default NULL,
+id int NOT NULL auto_increment PRIMARY KEY
+);
+INSERT INTO t1 VALUES
+('CO',235371754),('CO',235376554),('CO',235376884),('CO',235377874),
+('CO',231060394),('CO',231059224),('CO',231059314),('CO',231060484),
+('CO',231060274),('CO',231060124),('CO',231060244),('CO',231058594),
+('CO',231058924),('CO',231058504),('CO',231059344),('CO',231060424),
+('CO',231059554),('CO',231060304),('CO',231059644),('CO',231059464),
+('CO',231059764),('CO',231058294),('CO',231058624),('CO',231058864),
+('CO',231059374),('CO',231059584),('CO',231059734),('CO',231059014),
+('CO',231059854),('CO',231059494),('CO',231059794),('CO',231058534),
+('CO',231058324),('CO',231058684),('CO',231059524),('CO',231059974);
+CREATE TABLE t2 (
+scan_date date default NULL,
+package_id int default NULL,
+INDEX scan_date(scan_date),
+INDEX package_id(package_id)
+);
+INSERT INTO t2 VALUES
+('2008-12-29',231062944),('2008-12-29',231065764),('2008-12-29',231066124),
+('2008-12-29',231060094),('2008-12-29',231061054),('2008-12-29',231065644),
+('2008-12-29',231064384),('2008-12-29',231064444),('2008-12-29',231073774),
+('2008-12-29',231058594),('2008-12-29',231059374),('2008-12-29',231066004),
+('2008-12-29',231068494),('2008-12-29',231070174),('2008-12-29',231071884),
+('2008-12-29',231063274),('2008-12-29',231063754),('2008-12-29',231064144),
+('2008-12-29',231069424),('2008-12-29',231073714),('2008-12-29',231058414),
+('2008-12-29',231060994),('2008-12-29',231069154),('2008-12-29',231068614),
+('2008-12-29',231071464),('2008-12-29',231074014),('2008-12-29',231059614),
+('2008-12-29',231059074),('2008-12-29',231059464),('2008-12-29',231069094),
+('2008-12-29',231067294),('2008-12-29',231070144),('2008-12-29',231073804),
+('2008-12-29',231072634),('2008-12-29',231058294),('2008-12-29',231065344),
+('2008-12-29',231066094),('2008-12-29',231069034),('2008-12-29',231058594),
+('2008-12-29',231059854),('2008-12-29',231059884),('2008-12-29',231059914),
+('2008-12-29',231063664),('2008-12-29',231063814),('2008-12-29',231063904);
+CREATE TABLE t3 (
+package_id int default NULL,
+INDEX package_id(package_id)
+);
+INSERT INTO t3 VALUES
+(231058294),(231058324),(231058354),(231058384),(231058414),(231058444),
+(231058474),(231058504),(231058534),(231058564),(231058594),(231058624),
+(231058684),(231058744),(231058804),(231058864),(231058924),(231058954),
+(231059014),(231059074),(231059104),(231059134),(231059164),(231059194),
+(231059224),(231059254),(231059284),(231059314),(231059344),(231059374),
+(231059404),(231059434),(231059464),(231059494),(231059524),(231059554),
+(231059584),(231059614),(231059644),(231059674),(231059704),(231059734),
+(231059764),(231059794),(231059824),(231059854),(231059884),(231059914),
+(231059944),(231059974),(231060004),(231060034),(231060064),(231060094),
+(231060124),(231060154),(231060184),(231060214),(231060244),(231060274),
+(231060304),(231060334),(231060364),(231060394),(231060424),(231060454),
+(231060484),(231060514),(231060544),(231060574),(231060604),(231060634),
+(231060664),(231060694),(231060724),(231060754),(231060784),(231060814),
+(231060844),(231060874),(231060904),(231060934),(231060964),(231060994),
+(231061024),(231061054),(231061084),(231061144),(231061174),(231061204),
+(231061234),(231061294),(231061354),(231061384),(231061414),(231061474),
+(231061564),(231061594),(231061624),(231061684),(231061714),(231061774),
+(231061804),(231061894),(231061984),(231062074),(231062134),(231062224),
+(231062254),(231062314),(231062374),(231062434),(231062494),(231062554),
+(231062584),(231062614),(231062644),(231062704),(231062734),(231062794),
+(231062854),(231062884),(231062944),(231063004),(231063034),(231063064),
+(231063124),(231063154),(231063184),(231063214),(231063274),(231063334),
+(231063394),(231063424),(231063454),(231063514),(231063574),(231063664);
+CREATE TABLE t4 (
+carrier char(2) NOT NULL default '' PRIMARY KEY,
+id int(11) default NULL,
+INDEX id(id)
+);
+INSERT INTO t4 VALUES
+('99',6),('SK',456),('UA',486),('AI',1081),('OS',1111),('VS',1510);
+CREATE TABLE t5 (
+carrier_id int default NULL,
+INDEX carrier_id(carrier_id)
+);
+INSERT INTO t5 VALUES
+(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),
+(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),
+(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),
+(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),
+(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),
+(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(456),(456),(456),
+(456),(456),(456),(456),(456),(456),(456),(456),(456),(456),(456),(456),
+(456),(486),(1081),(1111),(1111),(1111),(1111),(1510);
+SELECT COUNT(*)
+FROM((t2 JOIN t1 ON t2.package_id = t1.id)
+JOIN t3 ON t3.package_id = t1.id);
+COUNT(*)
+6
+EXPLAIN
+SELECT COUNT(*)
+FROM ((t2 JOIN t1 ON t2.package_id = t1.id)
+JOIN t3 ON t3.package_id = t1.id)
+LEFT JOIN
+(t5 JOIN t4 ON t5.carrier_id = t4.id)
+ON t4.carrier = t1.carrier;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t2 index package_id package_id 5 NULL 45 Using where; Using index
+1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.package_id 1
+1 SIMPLE t4 eq_ref PRIMARY,id PRIMARY 2 test.t1.carrier 1 Using where
+1 SIMPLE t5 ref carrier_id carrier_id 5 test.t4.id 22 Using index
+1 SIMPLE t3 ref package_id package_id 5 test.t2.package_id 1 Using index
+SELECT COUNT(*)
+FROM ((t2 JOIN t1 ON t2.package_id = t1.id)
+JOIN t3 ON t3.package_id = t1.id)
+LEFT JOIN
+(t5 JOIN t4 ON t5.carrier_id = t4.id)
+ON t4.carrier = t1.carrier;
+COUNT(*)
+6
+DROP TABLE t1,t2,t3,t4,t5;
+CREATE TABLE t1 (
+pk int NOT NULL AUTO_INCREMENT PRIMARY KEY,
+a int DEFAULT NULL,
+KEY idx(a)
+);
+CREATE TABLE t2 (
+pk int NOT NULL AUTO_INCREMENT PRIMARY KEY,
+a int DEFAULT NULL,
+KEY idx(a)
+);
+CREATE TABLE t3 (
+pk int NOT NULL AUTO_INCREMENT PRIMARY KEY,
+a int DEFAULT NULL,
+KEY idx(a)
+);
+INSERT INTO t1 VALUES
+(1,2), (2,7), (3,5), (4,7), (5,5), (6,NULL), (7,NULL), (8,9);
+INSERT INTO t2 VALUES
+(1,NULL), (4,2), (5,2), (3,4), (2,8);
+INSERT INTO t3 VALUES
+(1,9), (2,2), (3,5), (4,2), (5,7), (6,0), (7,5);
+SELECT t1.pk, t1.a, t2.pk, t2.a,t3.pk, t3.a
+FROM t1 LEFT JOIN (t2 LEFT JOIN t3 ON t3.a=t2.a) ON t2.a=t1.a;
+pk a pk a pk a
+1 2 4 2 2 2
+1 2 4 2 4 2
+1 2 5 2 2 2
+1 2 5 2 4 2
+2 7 NULL NULL NULL NULL
+3 5 NULL NULL NULL NULL
+4 7 NULL NULL NULL NULL
+5 5 NULL NULL NULL NULL
+6 NULL NULL NULL NULL NULL
+7 NULL NULL NULL NULL NULL
+8 9 NULL NULL NULL NULL
+SELECT t1.pk, t1.a, t2.pk, t2.a,t3.pk, t3.a
+FROM t1 LEFT JOIN (t2 LEFT JOIN t3 ON t3.a=t2.a) ON t2.a=t1.a
+WHERE t2.pk IS NULL;
+pk a pk a pk a
+2 7 NULL NULL NULL NULL
+3 5 NULL NULL NULL NULL
+4 7 NULL NULL NULL NULL
+5 5 NULL NULL NULL NULL
+6 NULL NULL NULL NULL NULL
+7 NULL NULL NULL NULL NULL
+8 9 NULL NULL NULL NULL
+SELECT t1.pk, t1.a, t2.pk, t2.a,t3.pk, t3.a
+FROM t1 LEFT JOIN (t2 LEFT JOIN t3 ON t3.a=t2.a) ON t2.a=t1.a
+WHERE t3.pk IS NULL;
+pk a pk a pk a
+2 7 NULL NULL NULL NULL
+3 5 NULL NULL NULL NULL
+4 7 NULL NULL NULL NULL
+5 5 NULL NULL NULL NULL
+6 NULL NULL NULL NULL NULL
+7 NULL NULL NULL NULL NULL
+8 9 NULL NULL NULL NULL
+DROP TABLE t1, t2, t3;
+CREATE TABLE t1 (a int NOT NULL );
+INSERT INTO t1 VALUES (9), (9);
+CREATE TABLE t2 (a int NOT NULL );
+INSERT INTO t2 VALUES (9);
+CREATE TABLE t3 (a int NOT NULL, b int);
+INSERT INTO t3 VALUES (19,9);
+CREATE TABLE t4 (b int) ;
+SELECT * FROM t1 LEFT JOIN
+((t2 LEFT JOIN t3 ON t2.a=t3.b) LEFT JOIN t4 ON t3.a=t4.b)
+ON t1.a=t2.a;
+a a a b b
+9 9 19 9 NULL
+9 9 19 9 NULL
+SELECT * FROM t1 LEFT JOIN
+((t2 LEFT JOIN t3 ON t2.a=t3.b) LEFT JOIN t4 ON t3.a=t4.b)
+ON t1.a=t2.a
+WHERE t3.a IS NULL;
+a a a b b
+EXPLAIN EXTENDED
+SELECT * FROM t1 LEFT JOIN
+((t2 LEFT JOIN t3 ON t2.a=t3.b) LEFT JOIN t4 ON t3.a=t4.b)
+ON t1.a=t2.a
+WHERE t3.a IS NULL;
+id select_type table type possible_keys key key_len ref rows filtered Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00
+1 SIMPLE t2 ALL NULL NULL NULL NULL 1 100.00 Using where
+1 SIMPLE t3 ALL NULL NULL NULL NULL 1 100.00 Using where; Not exists
+1 SIMPLE t4 ALL NULL NULL NULL NULL 0 0.00 Using where
+Warnings:
+Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t2`.`a` AS `a`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`b` AS `b` from `test`.`t1` left join (`test`.`t2` left join `test`.`t3` on(`test`.`t3`.`b` = `test`.`t1`.`a`) left join `test`.`t4` on(`test`.`t4`.`b` = `test`.`t3`.`a`)) on(`test`.`t2`.`a` = `test`.`t1`.`a`) where `test`.`t3`.`a` is null
+DROP TABLE t1,t2,t3,t4;
+SET optimizer_switch=@save_optimizer_switch;
+End of 5.0 tests
+#
+# MDEV-621: LP:693329 - Assertion `!is_interleave_error' failed on low optimizer_search_depth
+#
+set @tmp_mdev621= @@optimizer_search_depth;
+SET SESSION optimizer_search_depth = 4;
+CREATE TABLE t1 (f1 int,f2 int,f3 int,f4 int) ;
+INSERT IGNORE INTO t1 VALUES (0,0,2,0),(NULL,0,2,0);
+CREATE TABLE t2 (f1 int) ;
+CREATE TABLE t3 (f3 int,PRIMARY KEY (f3)) ;
+CREATE TABLE t4 (f5 int) ;
+CREATE TABLE t5 (f2 int) ;
+SELECT alias2.f4 FROM t1 AS alias1
+LEFT JOIN t1 AS alias2
+LEFT JOIN t2 AS alias3
+LEFT JOIN t3 AS alias4 ON alias3.f1 = alias4.f3
+ON alias2.f1
+LEFT JOIN t4 AS alias5
+JOIN t5 ON alias5.f5
+ON alias2.f3 ON alias1.f2;
+f4
+NULL
+NULL
+DROP TABLE t1,t2,t3,t4,t5;
+#
+# MDEV-7992: Nested left joins + 'not exists' optimization
+#
+CREATE TABLE t1(
+K1 INT PRIMARY KEY,
+Name VARCHAR(15)
+);
+INSERT INTO t1 VALUES
+(1,'T1Row1'), (2,'T1Row2');
+CREATE TABLE t2(
+K2 INT PRIMARY KEY,
+K1r INT,
+rowTimestamp DATETIME,
+Event VARCHAR(15)
+);
+INSERT INTO t2 VALUES
+(1, 1, '2015-04-13 10:42:11' ,'T1Row1Event1'),
+(2, 1, '2015-04-13 10:42:12' ,'T1Row1Event2'),
+(3, 1, '2015-04-13 10:42:12' ,'T1Row1Event3');
+SELECT t1a.*, t2a.*,
+t2i.K2 AS K2B, t2i.K1r AS K1rB,
+t2i.rowTimestamp AS rowTimestampB, t2i.Event AS EventB
+FROM
+t1 t1a JOIN t2 t2a ON t2a.K1r = t1a.K1
+LEFT JOIN
+( t1 t1i LEFT JOIN t2 t2i ON t2i.K1r = t1i.K1)
+ON (t1i.K1 = 1) AND
+(((t2i.K1r = t1a.K1 AND t2i.rowTimestamp > t2a.rowTimestamp ) OR
+(t2i.rowTimestamp = t2a.rowTimestamp AND t2i.K2 > t2a.K2))
+OR (t2i.K2 IS NULL))
+WHERE
+t2a.K1r = 1 AND t2i.K2 IS NULL;
+K1 Name K2 K1r rowTimestamp Event K2B K1rB rowTimestampB EventB
+1 T1Row1 3 1 2015-04-13 10:42:12 T1Row1Event3 NULL NULL NULL NULL
+EXPLAIN EXTENDED SELECT t1a.*, t2a.*,
+t2i.K2 AS K2B, t2i.K1r AS K1rB,
+t2i.rowTimestamp AS rowTimestampB, t2i.Event AS EventB
+FROM
+t1 t1a JOIN t2 t2a ON t2a.K1r = t1a.K1
+LEFT JOIN
+( t1 t1i LEFT JOIN t2 t2i ON t2i.K1r = t1i.K1)
+ON (t1i.K1 = 1) AND
+(((t2i.K1r = t1a.K1 AND t2i.rowTimestamp > t2a.rowTimestamp ) OR
+(t2i.rowTimestamp = t2a.rowTimestamp AND t2i.K2 > t2a.K2))
+OR (t2i.K2 IS NULL))
+WHERE
+t2a.K1r = 1 AND t2i.K2 IS NULL;
+id select_type table type possible_keys key key_len ref rows filtered Extra
+1 SIMPLE t1a const PRIMARY PRIMARY 4 const 1 100.00
+1 SIMPLE t2a ALL NULL NULL NULL NULL 3 100.00 Using where
+1 SIMPLE t1i const PRIMARY PRIMARY 4 const 1 100.00 Using index
+1 SIMPLE t2i ALL NULL NULL NULL NULL 3 100.00 Using where; Not exists
+Warnings:
+Note 1003 select 1 AS `K1`,'T1Row1' AS `Name`,`test`.`t2a`.`K2` AS `K2`,`test`.`t2a`.`K1r` AS `K1r`,`test`.`t2a`.`rowTimestamp` AS `rowTimestamp`,`test`.`t2a`.`Event` AS `Event`,`test`.`t2i`.`K2` AS `K2B`,`test`.`t2i`.`K1r` AS `K1rB`,`test`.`t2i`.`rowTimestamp` AS `rowTimestampB`,`test`.`t2i`.`Event` AS `EventB` from `test`.`t1` `t1a` join `test`.`t2` `t2a` left join (`test`.`t1` `t1i` left join `test`.`t2` `t2i` on(`test`.`t2i`.`K1r` = 1)) on(`test`.`t1i`.`K1` = 1 and (`test`.`t2i`.`K1r` = 1 and `test`.`t2i`.`rowTimestamp` > `test`.`t2a`.`rowTimestamp` or `test`.`t2i`.`rowTimestamp` = `test`.`t2a`.`rowTimestamp` and `test`.`t2i`.`K2` > `test`.`t2a`.`K2` or `test`.`t2i`.`K2` is null)) where `test`.`t2a`.`K1r` = 1 and `test`.`t2i`.`K2` is null
+CREATE VIEW v1 AS
+SELECT t2i.*
+FROM t1 as t1i LEFT JOIN t2 as t2i ON t2i.K1r = t1i.K1
+WHERE t1i.K1 = 1 ;
+SELECT
+t1a.*, t2a.*, t2b.K2 as K2B, t2b.K1r as K1rB,
+t2b.rowTimestamp as rowTimestampB, t2b.Event as EventB
+FROM
+t1 as t1a JOIN t2 as t2a ON t2a.K1r = t1a.K1
+LEFT JOIN
+v1 as t2b
+ON ((t2b.K1r = t1a.K1 AND t2b.rowTimestamp > t2a.rowTimestamp) OR
+(t2b.rowTimestamp = t2a.rowTimestamp AND t2b.K2 > t2a.K2))
+OR (t2b.K2 IS NULL)
+WHERE
+t1a.K1 = 1 AND
+t2b.K2 IS NULL;
+K1 Name K2 K1r rowTimestamp Event K2B K1rB rowTimestampB EventB
+1 T1Row1 3 1 2015-04-13 10:42:12 T1Row1Event3 NULL NULL NULL NULL
+EXPLAIN EXTENDED SELECT
+t1a.*, t2a.*, t2b.K2 as K2B, t2b.K1r as K1rB,
+t2b.rowTimestamp as rowTimestampB, t2b.Event as EventB
+FROM
+t1 as t1a JOIN t2 as t2a ON t2a.K1r = t1a.K1
+LEFT JOIN
+v1 as t2b
+ON ((t2b.K1r = t1a.K1 AND t2b.rowTimestamp > t2a.rowTimestamp) OR
+(t2b.rowTimestamp = t2a.rowTimestamp AND t2b.K2 > t2a.K2))
+OR (t2b.K2 IS NULL)
+WHERE
+t1a.K1 = 1 AND
+t2b.K2 IS NULL;
+id select_type table type possible_keys key key_len ref rows filtered Extra
+1 SIMPLE t1a const PRIMARY PRIMARY 4 const 1 100.00
+1 SIMPLE t2a ALL NULL NULL NULL NULL 3 100.00 Using where
+1 SIMPLE t1i const PRIMARY PRIMARY 4 const 1 100.00 Using index
+1 SIMPLE t2i ALL NULL NULL NULL NULL 3 100.00 Using where; Not exists
+Warnings:
+Note 1003 select 1 AS `K1`,'T1Row1' AS `Name`,`t2a`.`K2` AS `K2`,`t2a`.`K1r` AS `K1r`,`t2a`.`rowTimestamp` AS `rowTimestamp`,`t2a`.`Event` AS `Event`,`test`.`t2i`.`K2` AS `K2B`,`test`.`t2i`.`K1r` AS `K1rB`,`test`.`t2i`.`rowTimestamp` AS `rowTimestampB`,`test`.`t2i`.`Event` AS `EventB` from `test`.`t1` `t1a` join `test`.`t2` `t2a` left join (`test`.`t1` `t1i` left join `test`.`t2` `t2i` on(`test`.`t2i`.`K1r` = 1)) on(`test`.`t1i`.`K1` = 1 and (`test`.`t2i`.`K1r` = 1 and `test`.`t2i`.`rowTimestamp` > `t2a`.`rowTimestamp` or `test`.`t2i`.`rowTimestamp` = `t2a`.`rowTimestamp` and `test`.`t2i`.`K2` > `t2a`.`K2` or `test`.`t2i`.`K2` is null)) where `t2a`.`K1r` = 1 and `test`.`t2i`.`K2` is null
+DROP VIEW v1;
+DROP TABLE t1,t2;
+set optimizer_search_depth= @tmp_mdev621;
+#
+# MDEV-19588: Nested left joins using optimized join cache
+#
+set optimizer_switch='optimize_join_buffer_size=on';
+set @save_join_cache_level= @@join_cache_level;
+set join_cache_level=2;
+CREATE TABLE t1 (i1 int, c1 varchar(20), pk int) engine=myisam;
+CREATE TABLE t2 (pk int, c1 varchar(20), i1 int) engine=myisam;
+INSERT INTO t2 VALUES (7,'a',-912),(8,'a',5);
+CREATE TABLE t3 (pk int, c1 varchar(20), i1 int) engine=myisam;
+INSERT INTO t3 VALUES
+(1,'a',-145),(2,'a',6),(3,'a',1),(7,'a',NULL),(8,'a',889),(9,'a',146),
+(10,'a',177),(16,'a',-433),(17,'a',NULL),(18,'a',2),(19,'a',3),(20,'a',5),
+(21,'a',-484),(22,'a',369),(23,'a',-192),(24,'a',-163),(25,'a',5),(26,'a',NULL);
+SELECT t3.*
+FROM t3 LEFT JOIN t1 LEFT JOIN t2 ON t1.i1 = t2.i1 ON t3.i1 = t1.i1
+WHERE t2.pk < 13 OR t3.i1 IS NULL;
+pk c1 i1
+7 a NULL
+17 a NULL
+26 a NULL
+explain extended SELECT t3.*
+FROM t3 LEFT JOIN t1 LEFT JOIN t2 ON t1.i1 = t2.i1 ON t3.i1 = t1.i1
+WHERE t2.pk < 13 OR t3.i1 IS NULL;
+id select_type table type possible_keys key key_len ref rows filtered Extra
+1 SIMPLE t3 ALL NULL NULL NULL NULL 18 100.00
+1 SIMPLE t1 ALL NULL NULL NULL NULL 0 0.00 Using where; Using join buffer (flat, BNL join)
+1 SIMPLE t2 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (incremental, BNL join)
+Warnings:
+Note 1003 select `test`.`t3`.`pk` AS `pk`,`test`.`t3`.`c1` AS `c1`,`test`.`t3`.`i1` AS `i1` from `test`.`t3` left join (`test`.`t1` left join `test`.`t2` on(`test`.`t2`.`i1` = `test`.`t3`.`i1`)) on(`test`.`t1`.`i1` = `test`.`t3`.`i1`) where `test`.`t2`.`pk` < 13 or `test`.`t3`.`i1` is null
+DROP TABLE t1,t2,t3;
+set join_cache_level= @save_join_cache_level;
+set optimizer_switch=@save_optimizer_switch;
+#
+# MDEV-27624: Nested left joins with not_exists optimization
+# for most inner left join
+#
+set @save_join_cache_level= @@join_cache_level;
+CREATE TABLE t1 (a INT NOT NULL, b INT, c INT);
+INSERT INTO t1 VALUES (1,1,1), (1,2,1), (1,3,1);
+CREATE TABLE t2(a INT NOT NULL);
+INSERT INTO t2 VALUES (1), (2);
+CREATE TABLE t3(a INT not null, b INT);
+INSERT INTO t3 VALUES (1, 1), (2, 1), (3, 1);
+set join_cache_level = 0;
+EXPLAIN SELECT *
+FROM t1
+LEFT JOIN
+( t2 LEFT JOIN t3 ON t2.a = t3.b )
+ON t2.a = 1 AND (t3.b = t1.a AND t3.a > t1.b OR t3.a is NULL)
+WHERE t1.c = 1 AND t3.a is NULL;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using where
+1 SIMPLE t2 ALL NULL NULL NULL NULL 2 Using where
+1 SIMPLE t3 ALL NULL NULL NULL NULL 3 Using where; Not exists
+SELECT *
+FROM t1
+LEFT JOIN
+( t2 LEFT JOIN t3 ON t2.a = t3.b )
+ON t2.a = 1 AND (t3.b = t1.a AND t3.a > t1.b OR t3.a is NULL)
+WHERE t1.c = 1 AND t3.a is NULL;
+a b c a a b
+1 3 1 NULL NULL NULL
+set join_cache_level = 2;
+EXPLAIN SELECT *
+FROM t1
+LEFT JOIN
+( t2 LEFT JOIN t3 ON t2.a = t3.b )
+ON t2.a = 1 AND (t3.b = t1.a AND t3.a > t1.b OR t3.a is NULL)
+WHERE t1.c = 1 AND t3.a is NULL;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using where
+1 SIMPLE t2 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (flat, BNL join)
+1 SIMPLE t3 ALL NULL NULL NULL NULL 3 Using where; Not exists; Using join buffer (incremental, BNL join)
+SELECT *
+FROM t1
+LEFT JOIN
+( t2 LEFT JOIN t3 ON t2.a = t3.b )
+ON t2.a = 1 AND (t3.b = t1.a AND t3.a > t1.b OR t3.a is NULL)
+WHERE t1.c = 1 AND t3.a is NULL;
+a b c a a b
+1 3 1 NULL NULL NULL
+DROP TABLE t1, t2, t3;
+set join_cache_level= @save_join_cache_level;
+# end of 10.3 tests
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-23 14:03:15 +0000