diff options
Diffstat (limited to 'mysql-test/main/statistics.result')
| -rw-r--r-- | mysql-test/main/statistics.result | 1905 |
1 files changed, 1905 insertions, 0 deletions
diff --git a/mysql-test/main/statistics.result b/mysql-test/main/statistics.result new file mode 100644 index 00000000..f5ea0bf9 --- /dev/null +++ b/mysql-test/main/statistics.result @@ -0,0 +1,1905 @@ +set @SINGLE_PREC_TYPE='single_prec_hb'; +set @DOUBLE_PREC_TYPE='double_prec_hb'; +set @DEFAULT_HIST_TYPE='double_prec_hb'; +set @save_use_stat_tables=@@use_stat_tables; +set @save_histogram_size=@@global.histogram_size; +set @@global.histogram_size=0,@@local.histogram_size=0; +set @save_hist_type=@DEFAULT_HIST_TYPE; +set histogram_type=@SINGLE_PREC_TYPE; +DELETE FROM mysql.table_stats; +DELETE FROM mysql.column_stats; +DELETE FROM mysql.index_stats; +set use_stat_tables='preferably'; +CREATE TABLE t1 ( +a int NOT NULL PRIMARY KEY, +b varchar(32), +c char(16), +d date, +e double, +f bit(3), +INDEX idx1 (b, e), +INDEX idx2 (c, d), +INDEX idx3 (d), +INDEX idx4 (e, b, d) +) ENGINE= MYISAM; +INSERT INTO t1 VALUES +(0, NULL, NULL, NULL, NULL, NULL), +(7, 'xxxxxxxxxxxxxxxxxxxxxxxxxx', 'dddddddd', '1990-05-15', 0.1, b'100'), +(17, 'vvvvvvvvvvvvv', 'aaaa', '1989-03-12', 0.01, b'101'), +(1, 'vvvvvvvvvvvvv', NULL, '1989-03-12', 0.01, b'100'), +(12, 'wwwwwwwwwwwwwwwwwwwwwwwwwwww', 'dddddddd', '1999-07-23', 0.112, b'001'), +(23, 'vvvvvvvvvvvvv', 'dddddddd', '1999-07-23', 0.1, b'100'), +(8, 'vvvvvvvvvvvvv', 'aaaa', '1999-07-23', 0.1, b'100'), +(22, 'xxxxxxxxxxxxxxxxxxxxxxxxxx', 'aaaa', '1989-03-12', 0.112, b'001'), +(31, 'wwwwwwwwwwwwwwwwwwwwwwwwwwww', 'aaaa', '1999-07-23', 0.01, b'001'), +(10, NULL, 'aaaa', NULL, 0.01, b'010'), +(5, 'wwwwwwwwwwwwwwwwwwwwwwwwwwww', 'dddddddd', '1999-07-23', 0.1, b'100'), +(15, 'vvvvvvvvvvvvv', 'ccccccccc', '1990-05-15', 0.1, b'010'), +(30, NULL, 'bbbbbb', NULL, NULL, b'100'), +(38, 'zzzzzzzzzzzzzzzzzz', 'bbbbbb', NULL, NULL, NULL), +(18, 'zzzzzzzzzzzzzzzzzz', 'ccccccccc', '1990-05-15', 0.01, b'010'), +(9, 'yyy', 'bbbbbb', '1998-08-28', 0.01, NULL), +(29, 'vvvvvvvvvvvvv', 'dddddddd', '1999-07-23', 0.012, b'010'), +(3, 'yyy', 'dddddddd', '1990-05-15', 0.112, b'010'), +(39, 'zzzzzzzzzzzzzzzzzz', 'bbbbbb', NULL, 0.01, b'100'), +(14, 'xxxxxxxxxxxxxxxxxxxxxxxxxx', 'ccccccccc', '1990-05-15', 0.1, b'100'), +(40, 'zzzzzzzzzzzzzzzzzz', 'bbbbbb', '1989-03-12', NULL, NULL), +(44, NULL, 'aaaa', '1989-03-12', NULL, b'010'), +(19, 'vvvvvvvvvvvvv', 'ccccccccc', '1990-05-15', 0.012, b'011'), +(21, 'zzzzzzzzzzzzzzzzzz', 'dddddddd', '1989-03-12', 0.112, b'100'), +(45, NULL, NULL, '1989-03-12', NULL, b'011'), +(2, 'wwwwwwwwwwwwwwwwwwwwwwwwwwww', 'ccccccccc', '1990-05-15', 0.1, b'001'), +(35, 'yyy', 'aaaa', '1990-05-15', 0.05, b'011'), +(4, 'vvvvvvvvvvvvv', 'dddddddd', '1999-07-23', 0.01, b'101'), +(47, NULL, 'aaaa', '1990-05-15', 0.05, b'010'), +(42, NULL, 'ccccccccc', '1989-03-12', 0.01, b'010'), +(32, NULL, 'bbbbbb', '1990-05-15', 0.01, b'011'), +(49, 'wwwwwwwwwwwwwwwwwwwwwwwwwwww' , 'aaaa', '1990-05-15', NULL, NULL), +(43, 'wwwwwwwwwwwwwwwwwwwwwwwwwwww' , 'bbbbbb', '1990-05-15', NULL, b'100'), +(37, 'yyy', NULL, '1989-03-12', 0.05, b'011'), +(41, 'xxxxxxxxxxxxxxxxxxxxxxxxxx', 'ccccccccc', '1990-05-15', 0.05, NULL), +(34, 'yyy', NULL, NULL, NULL, NULL), +(33, 'zzzzzzzzzzzzzzzzzz', 'dddddddd', '1989-03-12', 0.05, b'011'), +(24, 'wwwwwwwwwwwwwwwwwwwwwwwwwwww', 'dddddddd', '1990-05-15', 0.01, b'101'), +(11, 'yyy', 'ccccccccc', '1999-07-23', 0.1, NULL), +(25, 'zzzzzzzzzzzzzzzzzz', 'bbb', '1989-03-12', 0.01, b'101'); +ANALYZE TABLE t1; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +SELECT * FROM mysql.table_stats; +db_name table_name cardinality +test t1 40 +SELECT * FROM mysql.column_stats; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram +test t1 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL +test t1 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.2000 17.1250 6.4000 0 NULL NULL +test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL +test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 0 NULL NULL +test t1 e 0.01 0.112 0.2250 8.0000 6.2000 0 NULL NULL +test t1 f 1 5 0.2000 1.0000 6.4000 0 NULL NULL +SELECT * FROM mysql.index_stats; +db_name table_name index_name prefix_arity avg_frequency +test t1 PRIMARY 1 1.0000 +test t1 idx1 1 6.4000 +test t1 idx1 2 1.6875 +test t1 idx2 1 7.0000 +test t1 idx2 2 2.3846 +test t1 idx3 1 8.5000 +test t1 idx4 1 6.2000 +test t1 idx4 2 1.6875 +test t1 idx4 3 1.1304 +SELECT COUNT(*) FROM t1; +COUNT(*) +40 +SELECT * FROM mysql.column_stats +WHERE db_name='test' AND table_name='t1' AND column_name='a'; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram +test t1 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL +SELECT MIN(t1.a), MAX(t1.a), +(SELECT COUNT(*) FROM t1 WHERE t1.b IS NULL) / +(SELECT COUNT(*) FROM t1) AS "NULLS_RATIO(t1.a)", +(SELECT COUNT(t1.a) FROM t1) / +(SELECT COUNT(DISTINCT t1.a) FROM t1) AS "AVG_FREQUENCY(t1.a)" +FROM t1; +MIN(t1.a) MAX(t1.a) NULLS_RATIO(t1.a) AVG_FREQUENCY(t1.a) +0 49 0.2000 1.0000 +SELECT * FROM mysql.column_stats +WHERE db_name='test' AND table_name='t1' AND column_name='b'; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram +test t1 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.2000 17.1250 6.4000 0 NULL NULL +SELECT MIN(t1.b), MAX(t1.b), +(SELECT COUNT(*) FROM t1 WHERE t1.b IS NULL) / +(SELECT COUNT(*) FROM t1) AS "NULLS_RATIO(t1.b)", +(SELECT COUNT(t1.b) FROM t1) / +(SELECT COUNT(DISTINCT t1.b) FROM t1) AS "AVG_FREQUENCY(t1.b)" +FROM t1; +MIN(t1.b) MAX(t1.b) NULLS_RATIO(t1.b) AVG_FREQUENCY(t1.b) +vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.2000 6.4000 +SELECT * FROM mysql.column_stats +WHERE db_name='test' AND table_name='t1' AND column_name='c'; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram +test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL +SELECT MIN(t1.c), MAX(t1.c), +(SELECT COUNT(*) FROM t1 WHERE t1.c IS NULL) / +(SELECT COUNT(*) FROM t1) AS "NULLS_RATIO(t1.c)", +(SELECT COUNT(t1.c) FROM t1) / +(SELECT COUNT(DISTINCT t1.c) FROM t1) AS "AVG_FREQUENCY(t1.c)" +FROM t1; +MIN(t1.c) MAX(t1.c) NULLS_RATIO(t1.c) AVG_FREQUENCY(t1.c) +aaaa dddddddd 0.1250 7.0000 +SELECT * FROM mysql.column_stats +WHERE db_name='test' AND table_name='t1' AND column_name='d'; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram +test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 0 NULL NULL +SELECT MIN(t1.d), MAX(t1.d), +(SELECT COUNT(*) FROM t1 WHERE t1.d IS NULL) / +(SELECT COUNT(*) FROM t1) AS "NULLS_RATIO(t1.d)", +(SELECT COUNT(t1.d) FROM t1) / +(SELECT COUNT(DISTINCT t1.d) FROM t1) AS "AVG_FREQUENCY(t1.d)" +FROM t1; +MIN(t1.d) MAX(t1.d) NULLS_RATIO(t1.d) AVG_FREQUENCY(t1.d) +1989-03-12 1999-07-23 0.1500 8.5000 +SELECT * FROM mysql.column_stats +WHERE db_name='test' AND table_name='t1' AND column_name='e'; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram +test t1 e 0.01 0.112 0.2250 8.0000 6.2000 0 NULL NULL +SELECT MIN(t1.e), MAX(t1.e), +(SELECT COUNT(*) FROM t1 WHERE t1.e IS NULL) / +(SELECT COUNT(*) FROM t1) AS "NULLS_RATIO(t1.e)", +(SELECT COUNT(t1.e) FROM t1) / +(SELECT COUNT(DISTINCT t1.e) FROM t1) AS "AVG_FREQUENCY(t1.e)" +FROM t1; +MIN(t1.e) MAX(t1.e) NULLS_RATIO(t1.e) AVG_FREQUENCY(t1.e) +0.01 0.112 0.2250 6.2000 +SELECT * FROM mysql.index_stats +WHERE db_name='test' AND table_name='t1' AND index_name='idx1'; +db_name table_name index_name prefix_arity avg_frequency +test t1 idx1 1 6.4000 +test t1 idx1 2 1.6875 +SELECT +(SELECT COUNT(*) FROM t1 WHERE t1.b IS NOT NULL) / +(SELECT COUNT(DISTINCT t1.b) FROM t1 WHERE t1.b IS NOT NULL) +AS 'ARITY 1', +(SELECT COUNT(*) FROM t1 WHERE t1.b IS NOT NULL AND t1.e IS NOT NULL) / +(SELECT COUNT(DISTINCT t1.b, t1.e) FROM t1 +WHERE t1.b IS NOT NULL AND t1.e IS NOT NULL) +AS 'ARITY 2'; +ARITY 1 ARITY 2 +6.4000 1.6875 +SELECT * FROM mysql.index_stats +WHERE db_name='test' AND table_name='t1' AND index_name='idx2'; +db_name table_name index_name prefix_arity avg_frequency +test t1 idx2 1 7.0000 +test t1 idx2 2 2.3846 +SELECT +(SELECT COUNT(*) FROM t1 WHERE t1.c IS NOT NULL) / +(SELECT COUNT(DISTINCT t1.c) FROM t1 WHERE t1.c IS NOT NULL) +AS 'ARITY 1', +(SELECT COUNT(*) FROM t1 WHERE t1.c IS NOT NULL AND t1.d IS NOT NULL) / +(SELECT COUNT(DISTINCT t1.c, t1.d) FROM t1 +WHERE t1.c IS NOT NULL AND t1.d IS NOT NULL) +AS 'ARITY 2'; +ARITY 1 ARITY 2 +7.0000 2.3846 +SELECT * FROM mysql.index_stats +WHERE db_name='test' AND table_name='t1' AND index_name='idx3'; +db_name table_name index_name prefix_arity avg_frequency +test t1 idx3 1 8.5000 +SELECT +(SELECT COUNT(*) FROM t1 WHERE t1.d IS NOT NULL) / +(SELECT COUNT(DISTINCT t1.d) FROM t1 WHERE t1.d IS NOT NULL) +AS 'ARITY 1'; +ARITY 1 +8.5000 +SELECT * FROM mysql.index_stats +WHERE db_name='test' AND table_name='t1' AND index_name='idx4'; +db_name table_name index_name prefix_arity avg_frequency +test t1 idx4 1 6.2000 +test t1 idx4 2 1.6875 +test t1 idx4 3 1.1304 +SELECT +(SELECT COUNT(*) FROM t1 WHERE t1.e IS NOT NULL) / +(SELECT COUNT(DISTINCT t1.e) FROM t1 WHERE t1.e IS NOT NULL) +AS 'ARITY 1', +(SELECT COUNT(*) FROM t1 WHERE t1.e IS NOT NULL AND t1.b IS NOT NULL) / +(SELECT COUNT(DISTINCT t1.e, t1.b) FROM t1 +WHERE t1.e IS NOT NULL AND t1.b IS NOT NULL) +AS 'ARITY 2', +(SELECT COUNT(*) FROM t1 +WHERE t1.e IS NOT NULL AND t1.b IS NOT NULL AND t1.d IS NOT NULL) / +(SELECT COUNT(DISTINCT t1.e, t1.b, t1.d) FROM t1 +WHERE t1.e IS NOT NULL AND t1.b IS NOT NULL AND t1.d IS NOT NULL) +AS 'ARITY 3'; +ARITY 1 ARITY 2 ARITY 3 +6.2000 1.6875 1.1304 +DELETE FROM mysql.column_stats; +set histogram_size=4; +ANALYZE TABLE t1; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status Table is already up to date +SELECT db_name, table_name, column_name, +min_value, max_value, +nulls_ratio, avg_frequency, +hist_size, hist_type, decode_histogram(hist_type,histogram) +FROM mysql.column_stats +ORDER BY db_name, table_name, column_name; +db_name table_name column_name min_value max_value nulls_ratio avg_frequency hist_size hist_type decode_histogram(hist_type,histogram) +test t1 a 0 49 0.0000 1.0000 NULL NULL NULL +test t1 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.2000 6.4000 4 SINGLE_PREC_HB 0.000,0.247,0.502,0.251,0.000 +test t1 c aaaa dddddddd 0.1250 7.0000 4 SINGLE_PREC_HB 0.000,0.333,0.333,0.333,0.000 +test t1 d 1989-03-12 1999-07-23 0.1500 8.5000 4 SINGLE_PREC_HB 0.000,0.098,0.000,0.902,0.000 +test t1 e 0.01 0.112 0.2250 6.2000 4 SINGLE_PREC_HB 0.000,0.020,0.373,0.490,0.118 +test t1 f 1 5 0.2000 6.4000 4 SINGLE_PREC_HB 0.247,0.251,0.251,0.000,0.251 +DELETE FROM mysql.column_stats; +set histogram_size=8; +set histogram_type=@DOUBLE_PREC_TYPE; +ANALYZE TABLE t1; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status Table is already up to date +SELECT db_name, table_name, column_name, +min_value, max_value, +nulls_ratio, avg_frequency, +hist_size, hist_type, decode_histogram(hist_type,histogram) +FROM mysql.column_stats +ORDER BY db_name, table_name, column_name; +db_name table_name column_name min_value max_value nulls_ratio avg_frequency hist_size hist_type decode_histogram(hist_type,histogram) +test t1 a 0 49 0.0000 1.0000 NULL NULL NULL +test t1 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.2000 6.4000 8 DOUBLE_PREC_HB 0.00000,0.24999,0.50001,0.25000,0.00000 +test t1 c aaaa dddddddd 0.1250 7.0000 8 DOUBLE_PREC_HB 0.00000,0.33333,0.33333,0.33333,0.00000 +test t1 d 1989-03-12 1999-07-23 0.1500 8.5000 8 DOUBLE_PREC_HB 0.00000,0.10161,0.00000,0.89839,0.00000 +test t1 e 0.01 0.112 0.2250 6.2000 8 DOUBLE_PREC_HB 0.00000,0.01961,0.37255,0.49020,0.11765 +test t1 f 1 5 0.2000 6.4000 8 DOUBLE_PREC_HB 0.24999,0.25000,0.25000,0.00000,0.25000 +DELETE FROM mysql.column_stats; +set histogram_size= 0; +set histogram_type=@SINGLE_PREC_TYPE; +ANALYZE TABLE t1; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status Table is already up to date +CREATE TABLE t3 ( +a int NOT NULL PRIMARY KEY, +b varchar(32), +c char(16), +INDEX idx (c) +) ENGINE=MYISAM; +INSERT INTO t3 VALUES +(0, NULL, NULL), +(7, 'xxxxxxxxxxxxxxxxxxxxxxxxxx', 'dddddddd'), +(17, 'vvvvvvvvvvvvv', 'aaaa'), +(1, 'vvvvvvvvvvvvv', NULL), +(12, 'wwwwwwwwwwwwwwwwwwwwwwwwwwww', 'dddddddd'), +(23, 'vvvvvvvvvvvvv', 'dddddddd'), +(8, 'vvvvvvvvvvvvv', 'aaaa'), +(22, 'xxxxxxxxxxxxxxxxxxxxxxxxxx', 'aaaa'), +(31, 'wwwwwwwwwwwwwwwwwwwwwwwwwwww', 'aaaa'), +(10, NULL, 'aaaa'), +(5, 'wwwwwwwwwwwwwwwwwwwwwwwwwwww', 'dddddddd'), +(15, 'vvvvvvvvvvvvv', 'ccccccccc'), +(30, NULL, 'bbbbbb'), +(38, 'zzzzzzzzzzzzzzzzzz', 'bbbbbb'), +(18, 'zzzzzzzzzzzzzzzzzz', 'ccccccccc'), +(9, 'yyy', 'bbbbbb'), +(29, 'vvvvvvvvvvvvv', 'dddddddd'); +ANALYZE TABLE t3; +Table Op Msg_type Msg_text +test.t3 analyze status Engine-independent statistics collected +test.t3 analyze status OK +SELECT * FROM mysql.table_stats; +db_name table_name cardinality +test t1 40 +test t3 17 +SELECT * FROM mysql.column_stats; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram +test t1 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL +test t1 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.2000 17.1250 6.4000 0 NULL NULL +test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL +test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 0 NULL NULL +test t1 e 0.01 0.112 0.2250 8.0000 6.2000 0 NULL NULL +test t1 f 1 5 0.2000 1.0000 6.4000 0 NULL NULL +test t3 a 0 38 0.0000 4.0000 1.0000 NULL NULL NULL +test t3 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.1765 18.0714 2.8000 0 NULL NULL +test t3 c aaaa dddddddd 0.1176 6.4000 3.7500 0 NULL NULL +SELECT * FROM mysql.index_stats; +db_name table_name index_name prefix_arity avg_frequency +test t1 PRIMARY 1 1.0000 +test t1 idx1 1 6.4000 +test t1 idx1 2 1.6875 +test t1 idx2 1 7.0000 +test t1 idx2 2 2.3846 +test t1 idx3 1 8.5000 +test t1 idx4 1 6.2000 +test t1 idx4 2 1.6875 +test t1 idx4 3 1.1304 +test t3 PRIMARY 1 1.0000 +test t3 idx 1 3.7500 +ALTER TABLE t1 RENAME TO s1; +SELECT * FROM mysql.table_stats; +db_name table_name cardinality +test s1 40 +test t3 17 +SELECT * FROM mysql.column_stats; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram +test s1 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL +test s1 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.2000 17.1250 6.4000 0 NULL NULL +test s1 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL +test s1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 0 NULL NULL +test s1 e 0.01 0.112 0.2250 8.0000 6.2000 0 NULL NULL +test s1 f 1 5 0.2000 1.0000 6.4000 0 NULL NULL +test t3 a 0 38 0.0000 4.0000 1.0000 NULL NULL NULL +test t3 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.1765 18.0714 2.8000 0 NULL NULL +test t3 c aaaa dddddddd 0.1176 6.4000 3.7500 0 NULL NULL +SELECT * FROM mysql.index_stats; +db_name table_name index_name prefix_arity avg_frequency +test s1 PRIMARY 1 1.0000 +test s1 idx1 1 6.4000 +test s1 idx1 2 1.6875 +test s1 idx2 1 7.0000 +test s1 idx2 2 2.3846 +test s1 idx3 1 8.5000 +test s1 idx4 1 6.2000 +test s1 idx4 2 1.6875 +test s1 idx4 3 1.1304 +test t3 PRIMARY 1 1.0000 +test t3 idx 1 3.7500 +RENAME TABLE s1 TO t1; +SELECT * FROM mysql.table_stats; +db_name table_name cardinality +test t1 40 +test t3 17 +SELECT * FROM mysql.column_stats; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram +test t1 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL +test t1 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.2000 17.1250 6.4000 0 NULL NULL +test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL +test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 0 NULL NULL +test t1 e 0.01 0.112 0.2250 8.0000 6.2000 0 NULL NULL +test t1 f 1 5 0.2000 1.0000 6.4000 0 NULL NULL +test t3 a 0 38 0.0000 4.0000 1.0000 NULL NULL NULL +test t3 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.1765 18.0714 2.8000 0 NULL NULL +test t3 c aaaa dddddddd 0.1176 6.4000 3.7500 0 NULL NULL +SELECT * FROM mysql.index_stats; +db_name table_name index_name prefix_arity avg_frequency +test t1 PRIMARY 1 1.0000 +test t1 idx1 1 6.4000 +test t1 idx1 2 1.6875 +test t1 idx2 1 7.0000 +test t1 idx2 2 2.3846 +test t1 idx3 1 8.5000 +test t1 idx4 1 6.2000 +test t1 idx4 2 1.6875 +test t1 idx4 3 1.1304 +test t3 PRIMARY 1 1.0000 +test t3 idx 1 3.7500 +DROP TABLE t3; +SELECT * FROM mysql.table_stats; +db_name table_name cardinality +test t1 40 +SELECT * FROM mysql.column_stats; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram +test t1 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL +test t1 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.2000 17.1250 6.4000 0 NULL NULL +test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL +test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 0 NULL NULL +test t1 e 0.01 0.112 0.2250 8.0000 6.2000 0 NULL NULL +test t1 f 1 5 0.2000 1.0000 6.4000 0 NULL NULL +SELECT * FROM mysql.index_stats; +db_name table_name index_name prefix_arity avg_frequency +test t1 PRIMARY 1 1.0000 +test t1 idx1 1 6.4000 +test t1 idx1 2 1.6875 +test t1 idx2 1 7.0000 +test t1 idx2 2 2.3846 +test t1 idx3 1 8.5000 +test t1 idx4 1 6.2000 +test t1 idx4 2 1.6875 +test t1 idx4 3 1.1304 +CREATE TEMPORARY TABLE t0 ( +a int NOT NULL PRIMARY KEY, +b varchar(32) +); +INSERT INTO t0 SELECT a,b FROM t1; +ALTER TABLE t1 CHANGE COLUMN b x varchar(32), +CHANGE COLUMN e y double; +SHOW CREATE TABLE t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(11) NOT NULL, + `x` varchar(32) DEFAULT NULL, + `c` char(16) DEFAULT NULL, + `d` date DEFAULT NULL, + `y` double DEFAULT NULL, + `f` bit(3) DEFAULT NULL, + PRIMARY KEY (`a`), + KEY `idx1` (`x`,`y`), + KEY `idx2` (`c`,`d`), + KEY `idx3` (`d`), + KEY `idx4` (`y`,`x`,`d`) +) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci +SELECT * FROM mysql.column_stats; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram +test t1 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL +test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL +test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 0 NULL NULL +test t1 f 1 5 0.2000 1.0000 6.4000 0 NULL NULL +test t1 x vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.2000 17.1250 6.4000 0 NULL NULL +test t1 y 0.01 0.112 0.2250 8.0000 6.2000 0 NULL NULL +ALTER TABLE t1 CHANGE COLUMN x b varchar(32), +CHANGE COLUMN y e double; +SHOW CREATE TABLE t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(11) NOT NULL, + `b` varchar(32) DEFAULT NULL, + `c` char(16) DEFAULT NULL, + `d` date DEFAULT NULL, + `e` double DEFAULT NULL, + `f` bit(3) DEFAULT NULL, + PRIMARY KEY (`a`), + KEY `idx1` (`b`,`e`), + KEY `idx2` (`c`,`d`), + KEY `idx3` (`d`), + KEY `idx4` (`e`,`b`,`d`) +) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci +SELECT * FROM mysql.column_stats; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram +test t1 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL +test t1 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.2000 17.1250 6.4000 0 NULL NULL +test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL +test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 0 NULL NULL +test t1 e 0.01 0.112 0.2250 8.0000 6.2000 0 NULL NULL +test t1 f 1 5 0.2000 1.0000 6.4000 0 NULL NULL +ALTER TABLE t1 RENAME TO s1, CHANGE COLUMN b x varchar(32); +SHOW CREATE TABLE s1; +Table Create Table +s1 CREATE TABLE `s1` ( + `a` int(11) NOT NULL, + `x` varchar(32) DEFAULT NULL, + `c` char(16) DEFAULT NULL, + `d` date DEFAULT NULL, + `e` double DEFAULT NULL, + `f` bit(3) DEFAULT NULL, + PRIMARY KEY (`a`), + KEY `idx1` (`x`,`e`), + KEY `idx2` (`c`,`d`), + KEY `idx3` (`d`), + KEY `idx4` (`e`,`x`,`d`) +) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci +SELECT * FROM mysql.table_stats; +db_name table_name cardinality +test s1 40 +SELECT * FROM mysql.column_stats; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram +test s1 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL +test s1 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL +test s1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 0 NULL NULL +test s1 e 0.01 0.112 0.2250 8.0000 6.2000 0 NULL NULL +test s1 f 1 5 0.2000 1.0000 6.4000 0 NULL NULL +test s1 x vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.2000 17.1250 6.4000 0 NULL NULL +SELECT * FROM mysql.index_stats; +db_name table_name index_name prefix_arity avg_frequency +test s1 PRIMARY 1 1.0000 +test s1 idx1 1 6.4000 +test s1 idx1 2 1.6875 +test s1 idx2 1 7.0000 +test s1 idx2 2 2.3846 +test s1 idx3 1 8.5000 +test s1 idx4 1 6.2000 +test s1 idx4 2 1.6875 +test s1 idx4 3 1.1304 +ALTER TABLE s1 RENAME TO t1, CHANGE COLUMN x b varchar(32); +SHOW CREATE TABLE t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(11) NOT NULL, + `b` varchar(32) DEFAULT NULL, + `c` char(16) DEFAULT NULL, + `d` date DEFAULT NULL, + `e` double DEFAULT NULL, + `f` bit(3) DEFAULT NULL, + PRIMARY KEY (`a`), + KEY `idx1` (`b`,`e`), + KEY `idx2` (`c`,`d`), + KEY `idx3` (`d`), + KEY `idx4` (`e`,`b`,`d`) +) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci +SELECT * FROM mysql.table_stats; +db_name table_name cardinality +test t1 40 +SELECT * FROM mysql.column_stats; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram +test t1 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL +test t1 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.2000 17.1250 6.4000 0 NULL NULL +test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL +test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 0 NULL NULL +test t1 e 0.01 0.112 0.2250 8.0000 6.2000 0 NULL NULL +test t1 f 1 5 0.2000 1.0000 6.4000 0 NULL NULL +SELECT * FROM mysql.index_stats; +db_name table_name index_name prefix_arity avg_frequency +test t1 PRIMARY 1 1.0000 +test t1 idx1 1 6.4000 +test t1 idx1 2 1.6875 +test t1 idx2 1 7.0000 +test t1 idx2 2 2.3846 +test t1 idx3 1 8.5000 +test t1 idx4 1 6.2000 +test t1 idx4 2 1.6875 +test t1 idx4 3 1.1304 +ALTER TABLE t1 CHANGE COLUMN b x varchar(30); +SHOW CREATE TABLE t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(11) NOT NULL, + `x` varchar(30) DEFAULT NULL, + `c` char(16) DEFAULT NULL, + `d` date DEFAULT NULL, + `e` double DEFAULT NULL, + `f` bit(3) DEFAULT NULL, + PRIMARY KEY (`a`), + KEY `idx1` (`x`,`e`), + KEY `idx2` (`c`,`d`), + KEY `idx3` (`d`), + KEY `idx4` (`e`,`x`,`d`) +) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci +SELECT * FROM mysql.column_stats; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram +test t1 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL +test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL +test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 0 NULL NULL +test t1 e 0.01 0.112 0.2250 8.0000 6.2000 0 NULL NULL +test t1 f 1 5 0.2000 1.0000 6.4000 0 NULL NULL +SELECT * FROM mysql.index_stats; +db_name table_name index_name prefix_arity avg_frequency +test t1 PRIMARY 1 1.0000 +test t1 idx2 1 7.0000 +test t1 idx2 2 2.3846 +test t1 idx3 1 8.5000 +ANALYZE TABLE t1 PERSISTENT FOR COLUMNS(x) INDEXES(); +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +SELECT * FROM mysql.column_stats where column_name="x"; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram +test t1 x vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.2000 17.1250 6.4000 0 NULL NULL +ALTER TABLE t1 CHANGE COLUMN x b varchar(32); +SHOW CREATE TABLE t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(11) NOT NULL, + `b` varchar(32) DEFAULT NULL, + `c` char(16) DEFAULT NULL, + `d` date DEFAULT NULL, + `e` double DEFAULT NULL, + `f` bit(3) DEFAULT NULL, + PRIMARY KEY (`a`), + KEY `idx1` (`b`,`e`), + KEY `idx2` (`c`,`d`), + KEY `idx3` (`d`), + KEY `idx4` (`e`,`b`,`d`) +) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci +SELECT * FROM mysql.column_stats; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram +test t1 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL +test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL +test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 0 NULL NULL +test t1 e 0.01 0.112 0.2250 8.0000 6.2000 0 NULL NULL +test t1 f 1 5 0.2000 1.0000 6.4000 0 NULL NULL +SELECT * FROM mysql.index_stats; +db_name table_name index_name prefix_arity avg_frequency +test t1 PRIMARY 1 1.0000 +test t1 idx2 1 7.0000 +test t1 idx2 2 2.3846 +test t1 idx3 1 8.5000 +ANALYZE TABLE t1 PERSISTENT FOR COLUMNS(b) INDEXES(idx1, idx4); +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +SELECT * FROM mysql.column_stats; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram +test t1 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL +test t1 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.2000 17.1250 6.4000 0 NULL NULL +test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL +test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 0 NULL NULL +test t1 e 0.01 0.112 0.2250 8.0000 6.2000 0 NULL NULL +test t1 f 1 5 0.2000 1.0000 6.4000 0 NULL NULL +SELECT * FROM mysql.index_stats; +db_name table_name index_name prefix_arity avg_frequency +test t1 PRIMARY 1 1.0000 +test t1 idx1 1 6.4000 +test t1 idx1 2 1.6875 +test t1 idx2 1 7.0000 +test t1 idx2 2 2.3846 +test t1 idx3 1 8.5000 +test t1 idx4 1 6.2000 +test t1 idx4 2 1.6875 +test t1 idx4 3 1.1304 +SELECT * INTO OUTFILE 'MYSQLTEST_VARDIR/tmp/save_column_stats' + FIELDS TERMINATED BY ',' OPTIONALLY ENCLOSED BY '"' LINES TERMINATED BY '\n' + FROM mysql.column_stats WHERE column_name='b'; +SELECT * INTO OUTFILE 'MYSQLTEST_VARDIR/tmp/save_index_stats' + FIELDS TERMINATED BY ',' OPTIONALLY ENCLOSED BY '"' LINES TERMINATED BY '\n' + FROM mysql.index_stats WHERE index_name IN ('idx1', 'idx4'); +ALTER TABLE t1 CHANGE COLUMN b x varchar(30); +SHOW CREATE TABLE t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(11) NOT NULL, + `x` varchar(30) DEFAULT NULL, + `c` char(16) DEFAULT NULL, + `d` date DEFAULT NULL, + `e` double DEFAULT NULL, + `f` bit(3) DEFAULT NULL, + PRIMARY KEY (`a`), + KEY `idx1` (`x`,`e`), + KEY `idx2` (`c`,`d`), + KEY `idx3` (`d`), + KEY `idx4` (`e`,`x`,`d`) +) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci +SELECT * FROM mysql.column_stats; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram +test t1 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL +test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL +test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 0 NULL NULL +test t1 e 0.01 0.112 0.2250 8.0000 6.2000 0 NULL NULL +test t1 f 1 5 0.2000 1.0000 6.4000 0 NULL NULL +SELECT * FROM mysql.index_stats; +db_name table_name index_name prefix_arity avg_frequency +test t1 PRIMARY 1 1.0000 +test t1 idx2 1 7.0000 +test t1 idx2 2 2.3846 +test t1 idx3 1 8.5000 +ALTER TABLE t1 CHANGE COLUMN x b varchar(32); +SHOW CREATE TABLE t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(11) NOT NULL, + `b` varchar(32) DEFAULT NULL, + `c` char(16) DEFAULT NULL, + `d` date DEFAULT NULL, + `e` double DEFAULT NULL, + `f` bit(3) DEFAULT NULL, + PRIMARY KEY (`a`), + KEY `idx1` (`b`,`e`), + KEY `idx2` (`c`,`d`), + KEY `idx3` (`d`), + KEY `idx4` (`e`,`b`,`d`) +) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci +SELECT * FROM mysql.column_stats; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram +test t1 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL +test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL +test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 0 NULL NULL +test t1 e 0.01 0.112 0.2250 8.0000 6.2000 0 NULL NULL +test t1 f 1 5 0.2000 1.0000 6.4000 0 NULL NULL +SELECT * FROM mysql.index_stats; +db_name table_name index_name prefix_arity avg_frequency +test t1 PRIMARY 1 1.0000 +test t1 idx2 1 7.0000 +test t1 idx2 2 2.3846 +test t1 idx3 1 8.5000 +LOAD DATA INFILE 'MYSQLTEST_VARDIR/tmp/save_column_stats' IGNORE +INTO TABLE mysql.column_stats +FIELDS TERMINATED BY ',' OPTIONALLY ENCLOSED BY '"' LINES TERMINATED BY '\n'; +LOAD DATA INFILE 'MYSQLTEST_VARDIR/tmp/save_index_stats' + INTO TABLE mysql.index_stats +FIELDS TERMINATED BY ',' OPTIONALLY ENCLOSED BY '"' LINES TERMINATED BY '\n'; +SELECT * FROM mysql.column_stats; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram +test t1 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL +test t1 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.2000 17.1250 6.4000 0 NULL NULL +test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL +test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 0 NULL NULL +test t1 e 0.01 0.112 0.2250 8.0000 6.2000 0 NULL NULL +test t1 f 1 5 0.2000 1.0000 6.4000 0 NULL NULL +SELECT * FROM mysql.index_stats; +db_name table_name index_name prefix_arity avg_frequency +test t1 PRIMARY 1 1.0000 +test t1 idx1 1 6.4000 +test t1 idx1 2 1.6875 +test t1 idx2 1 7.0000 +test t1 idx2 2 2.3846 +test t1 idx3 1 8.5000 +test t1 idx4 1 6.2000 +test t1 idx4 2 1.6875 +test t1 idx4 3 1.1304 +ALTER TABLE t1 DROP COLUMN b; +SHOW CREATE TABLE t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(11) NOT NULL, + `c` char(16) DEFAULT NULL, + `d` date DEFAULT NULL, + `e` double DEFAULT NULL, + `f` bit(3) DEFAULT NULL, + PRIMARY KEY (`a`), + KEY `idx1` (`e`), + KEY `idx2` (`c`,`d`), + KEY `idx3` (`d`), + KEY `idx4` (`e`,`d`) +) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci +SELECT * FROM mysql.column_stats; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram +test t1 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL +test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL +test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 0 NULL NULL +test t1 e 0.01 0.112 0.2250 8.0000 6.2000 0 NULL NULL +test t1 f 1 5 0.2000 1.0000 6.4000 0 NULL NULL +SELECT * FROM mysql.index_stats; +db_name table_name index_name prefix_arity avg_frequency +test t1 PRIMARY 1 1.0000 +test t1 idx2 1 7.0000 +test t1 idx2 2 2.3846 +test t1 idx3 1 8.5000 +DROP INDEX idx2 ON t1; +SHOW CREATE TABLE t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(11) NOT NULL, + `c` char(16) DEFAULT NULL, + `d` date DEFAULT NULL, + `e` double DEFAULT NULL, + `f` bit(3) DEFAULT NULL, + PRIMARY KEY (`a`), + KEY `idx1` (`e`), + KEY `idx3` (`d`), + KEY `idx4` (`e`,`d`) +) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci +SELECT * FROM mysql.index_stats; +db_name table_name index_name prefix_arity avg_frequency +test t1 PRIMARY 1 1.0000 +test t1 idx3 1 8.5000 +DROP INDEX idx1 ON t1; +DROP INDEX idx4 ON t1; +SHOW CREATE TABLE t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(11) NOT NULL, + `c` char(16) DEFAULT NULL, + `d` date DEFAULT NULL, + `e` double DEFAULT NULL, + `f` bit(3) DEFAULT NULL, + PRIMARY KEY (`a`), + KEY `idx3` (`d`) +) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci +ALTER TABLE t1 ADD COLUMN b varchar(32); +CREATE INDEX idx1 ON t1(b, e); +CREATE INDEX idx2 ON t1(c, d); +CREATE INDEX idx4 ON t1(e, b, d); +SHOW CREATE TABLE t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(11) NOT NULL, + `c` char(16) DEFAULT NULL, + `d` date DEFAULT NULL, + `e` double DEFAULT NULL, + `f` bit(3) DEFAULT NULL, + `b` varchar(32) DEFAULT NULL, + PRIMARY KEY (`a`), + KEY `idx3` (`d`), + KEY `idx1` (`b`,`e`), + KEY `idx2` (`c`,`d`), + KEY `idx4` (`e`,`b`,`d`) +) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci +SELECT * FROM mysql.column_stats; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram +test t1 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL +test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL +test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 0 NULL NULL +test t1 e 0.01 0.112 0.2250 8.0000 6.2000 0 NULL NULL +test t1 f 1 5 0.2000 1.0000 6.4000 0 NULL NULL +SELECT * FROM mysql.index_stats; +db_name table_name index_name prefix_arity avg_frequency +test t1 PRIMARY 1 1.0000 +test t1 idx3 1 8.5000 +ANALYZE TABLE t1 PERSISTENT FOR COLUMNS(b) INDEXES(idx1, idx2, idx4); +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +SELECT * FROM mysql.column_stats; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram +test t1 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL +test t1 b NULL NULL 1.0000 NULL NULL 0 NULL NULL +test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL +test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 0 NULL NULL +test t1 e 0.01 0.112 0.2250 8.0000 6.2000 0 NULL NULL +test t1 f 1 5 0.2000 1.0000 6.4000 0 NULL NULL +SELECT * FROM mysql.index_stats; +db_name table_name index_name prefix_arity avg_frequency +test t1 PRIMARY 1 1.0000 +test t1 idx1 1 NULL +test t1 idx1 2 NULL +test t1 idx2 1 7.0000 +test t1 idx2 2 2.3846 +test t1 idx3 1 8.5000 +test t1 idx4 1 6.2000 +test t1 idx4 2 NULL +test t1 idx4 3 NULL +UPDATE t1 SET b=(SELECT b FROM t0 WHERE t0.a= t1.a); +ANALYZE TABLE t1 PERSISTENT FOR COLUMNS(b) INDEXES(idx1, idx2, idx4); +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +SELECT * FROM mysql.column_stats; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram +test t1 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL +test t1 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.2000 17.1250 6.4000 0 NULL NULL +test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL +test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 0 NULL NULL +test t1 e 0.01 0.112 0.2250 8.0000 6.2000 0 NULL NULL +test t1 f 1 5 0.2000 1.0000 6.4000 0 NULL NULL +SELECT * FROM mysql.index_stats; +db_name table_name index_name prefix_arity avg_frequency +test t1 PRIMARY 1 1.0000 +test t1 idx1 1 6.4000 +test t1 idx1 2 1.6875 +test t1 idx2 1 7.0000 +test t1 idx2 2 2.3846 +test t1 idx3 1 8.5000 +test t1 idx4 1 6.2000 +test t1 idx4 2 1.6875 +test t1 idx4 3 1.1304 +ALTER TABLE t1 DROP COLUMN b, +DROP INDEX idx1, DROP INDEX idx2, DROP INDEX idx4; +SHOW CREATE TABLE t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(11) NOT NULL, + `c` char(16) DEFAULT NULL, + `d` date DEFAULT NULL, + `e` double DEFAULT NULL, + `f` bit(3) DEFAULT NULL, + PRIMARY KEY (`a`), + KEY `idx3` (`d`) +) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci +SELECT * FROM mysql.column_stats; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram +test t1 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL +test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL +test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 0 NULL NULL +test t1 e 0.01 0.112 0.2250 8.0000 6.2000 0 NULL NULL +test t1 f 1 5 0.2000 1.0000 6.4000 0 NULL NULL +SELECT * FROM mysql.index_stats; +db_name table_name index_name prefix_arity avg_frequency +test t1 PRIMARY 1 1.0000 +test t1 idx3 1 8.5000 +ALTER TABLE t1 ADD COLUMN b varchar(32); +ALTER TABLE t1 +ADD INDEX idx1 (b, e), ADD INDEX idx2 (c, d), ADD INDEX idx4 (e, b, d); +UPDATE t1 SET b=(SELECT b FROM t0 WHERE t0.a= t1.a); +SHOW CREATE TABLE t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` int(11) NOT NULL, + `c` char(16) DEFAULT NULL, + `d` date DEFAULT NULL, + `e` double DEFAULT NULL, + `f` bit(3) DEFAULT NULL, + `b` varchar(32) DEFAULT NULL, + PRIMARY KEY (`a`), + KEY `idx3` (`d`), + KEY `idx1` (`b`,`e`), + KEY `idx2` (`c`,`d`), + KEY `idx4` (`e`,`b`,`d`) +) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci +SELECT * FROM mysql.column_stats; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram +test t1 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL +test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL +test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 0 NULL NULL +test t1 e 0.01 0.112 0.2250 8.0000 6.2000 0 NULL NULL +test t1 f 1 5 0.2000 1.0000 6.4000 0 NULL NULL +SELECT * FROM mysql.index_stats; +db_name table_name index_name prefix_arity avg_frequency +test t1 PRIMARY 1 1.0000 +test t1 idx3 1 8.5000 +ANALYZE TABLE t1 PERSISTENT FOR COLUMNS(b) INDEXES(idx1, idx2, idx4); +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +SELECT * FROM mysql.column_stats; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram +test t1 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL +test t1 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.2000 17.1250 6.4000 0 NULL NULL +test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL +test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 0 NULL NULL +test t1 e 0.01 0.112 0.2250 8.0000 6.2000 0 NULL NULL +test t1 f 1 5 0.2000 1.0000 6.4000 0 NULL NULL +SELECT * FROM mysql.index_stats; +db_name table_name index_name prefix_arity avg_frequency +test t1 PRIMARY 1 1.0000 +test t1 idx1 1 6.4000 +test t1 idx1 2 1.6875 +test t1 idx2 1 7.0000 +test t1 idx2 2 2.3846 +test t1 idx3 1 8.5000 +test t1 idx4 1 6.2000 +test t1 idx4 2 1.6875 +test t1 idx4 3 1.1304 +DELETE FROM mysql.table_stats; +DELETE FROM mysql.column_stats; +DELETE FROM mysql.index_stats; +ANALYZE TABLE t1 PERSISTENT FOR COLUMNS() INDEXES(); +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status Table is already up to date +SELECT * FROM mysql.table_stats; +db_name table_name cardinality +test t1 40 +SELECT * FROM mysql.column_stats; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram +SELECT * FROM mysql.index_stats; +db_name table_name index_name prefix_arity avg_frequency +ANALYZE TABLE t1 PERSISTENT FOR COLUMNS(c,e,b) INDEXES(idx2,idx4); +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status Table is already up to date +SELECT * FROM mysql.table_stats; +db_name table_name cardinality +test t1 40 +SELECT * FROM mysql.column_stats; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram +test t1 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.2000 17.1250 6.4000 0 NULL NULL +test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL +test t1 e 0.01 0.112 0.2250 8.0000 6.2000 0 NULL NULL +SELECT * FROM mysql.index_stats; +db_name table_name index_name prefix_arity avg_frequency +test t1 idx2 1 7.0000 +test t1 idx2 2 2.3846 +test t1 idx4 1 6.2000 +test t1 idx4 2 1.6875 +test t1 idx4 3 1.1304 +DELETE FROM mysql.index_stats WHERE table_name='t1' AND index_name='primary'; +SELECT * FROM mysql.index_stats; +db_name table_name index_name prefix_arity avg_frequency +test t1 idx2 1 7.0000 +test t1 idx2 2 2.3846 +test t1 idx4 1 6.2000 +test t1 idx4 2 1.6875 +test t1 idx4 3 1.1304 +ANALYZE TABLE t1 PERSISTENT FOR COLUMNS() INDEXES(primary); +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status Table is already up to date +SELECT * FROM mysql.index_stats; +db_name table_name index_name prefix_arity avg_frequency +test t1 PRIMARY 1 1.0000 +test t1 idx2 1 7.0000 +test t1 idx2 2 2.3846 +test t1 idx4 1 6.2000 +test t1 idx4 2 1.6875 +test t1 idx4 3 1.1304 +DELETE FROM mysql.table_stats; +DELETE FROM mysql.column_stats; +DELETE FROM mysql.index_stats; +ANALYZE TABLE t1 PERSISTENT FOR COLUMNS ALL INDEXES ALL; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status Table is already up to date +SELECT * FROM mysql.table_stats; +db_name table_name cardinality +test t1 40 +SELECT * FROM mysql.column_stats; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram +test t1 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL +test t1 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.2000 17.1250 6.4000 0 NULL NULL +test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL +test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 0 NULL NULL +test t1 e 0.01 0.112 0.2250 8.0000 6.2000 0 NULL NULL +test t1 f 1 5 0.2000 1.0000 6.4000 0 NULL NULL +SELECT * FROM mysql.index_stats; +db_name table_name index_name prefix_arity avg_frequency +test t1 PRIMARY 1 1.0000 +test t1 idx1 1 6.4000 +test t1 idx1 2 1.6875 +test t1 idx2 1 7.0000 +test t1 idx2 2 2.3846 +test t1 idx3 1 8.5000 +test t1 idx4 1 6.2000 +test t1 idx4 2 1.6875 +test t1 idx4 3 1.1304 +CREATE TABLE t2 LIKE t1; +ALTER TABLE t2 ENGINE=InnoDB; +INSERT INTO t2 SELECT * FROM t1; +set optimizer_switch='extended_keys=off'; +ANALYZE TABLE t2; +Table Op Msg_type Msg_text +test.t2 analyze status Engine-independent statistics collected +test.t2 analyze status OK +SELECT * FROM mysql.table_stats; +db_name table_name cardinality +test t1 40 +test t2 40 +SELECT * FROM mysql.column_stats ORDER BY column_name, table_name; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram +test t1 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL +test t2 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL +test t1 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.2000 17.1250 6.4000 0 NULL NULL +test t2 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.2000 17.1250 6.4000 0 NULL NULL +test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL +test t2 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL +test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 0 NULL NULL +test t2 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 0 NULL NULL +test t1 e 0.01 0.112 0.2250 8.0000 6.2000 0 NULL NULL +test t2 e 0.01 0.112 0.2250 8.0000 6.2000 0 NULL NULL +test t1 f 1 5 0.2000 1.0000 6.4000 0 NULL NULL +test t2 f 1 5 0.2000 1.0000 6.4000 0 NULL NULL +SELECT * FROM mysql.index_stats ORDER BY index_name, prefix_arity, table_name; +db_name table_name index_name prefix_arity avg_frequency +test t1 PRIMARY 1 1.0000 +test t2 PRIMARY 1 1.0000 +test t1 idx1 1 6.4000 +test t2 idx1 1 6.4000 +test t1 idx1 2 1.6875 +test t2 idx1 2 1.6875 +test t1 idx2 1 7.0000 +test t2 idx2 1 7.0000 +test t1 idx2 2 2.3846 +test t2 idx2 2 2.3846 +test t1 idx3 1 8.5000 +test t2 idx3 1 8.5000 +test t1 idx4 1 6.2000 +test t2 idx4 1 6.2000 +test t1 idx4 2 1.6875 +test t2 idx4 2 1.6875 +test t1 idx4 3 1.1304 +test t2 idx4 3 1.1304 +DELETE FROM mysql.table_stats; +DELETE FROM mysql.column_stats; +DELETE FROM mysql.index_stats; +set optimizer_switch='extended_keys=on'; +ANALYZE TABLE t2; +Table Op Msg_type Msg_text +test.t2 analyze status Engine-independent statistics collected +test.t2 analyze status OK +SELECT * FROM mysql.table_stats; +db_name table_name cardinality +test t2 40 +SELECT * FROM mysql.column_stats ORDER BY column_name; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram +test t2 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL +test t2 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.2000 17.1250 6.4000 0 NULL NULL +test t2 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL +test t2 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 0 NULL NULL +test t2 e 0.01 0.112 0.2250 8.0000 6.2000 0 NULL NULL +test t2 f 1 5 0.2000 1.0000 6.4000 0 NULL NULL +SELECT * FROM mysql.index_stats ORDER BY index_name, prefix_arity, table_name; +db_name table_name index_name prefix_arity avg_frequency +test t2 PRIMARY 1 1.0000 +test t2 idx1 1 6.4000 +test t2 idx1 2 1.6875 +test t2 idx1 3 1.0000 +test t2 idx2 1 7.0000 +test t2 idx2 2 2.3846 +test t2 idx2 3 1.0000 +test t2 idx3 1 8.5000 +test t2 idx3 2 1.0000 +test t2 idx4 1 6.2000 +test t2 idx4 2 1.6875 +test t2 idx4 3 1.1304 +test t2 idx4 4 1.0000 +ALTER TABLE t2 DROP PRIMARY KEY, DROP INDEX idx1; +SELECT * FROM mysql.index_stats ORDER BY index_name, prefix_arity, table_name; +db_name table_name index_name prefix_arity avg_frequency +test t2 idx2 1 7.0000 +test t2 idx2 2 2.3846 +test t2 idx3 1 8.5000 +test t2 idx4 1 6.2000 +test t2 idx4 2 1.6875 +test t2 idx4 3 1.1304 +UPDATE t2 SET b=0 WHERE b IS NULL; +ALTER TABLE t2 ADD PRIMARY KEY (a,b); +SELECT * FROM mysql.index_stats ORDER BY index_name, prefix_arity, table_name; +db_name table_name index_name prefix_arity avg_frequency +test t2 idx2 1 7.0000 +test t2 idx2 2 2.3846 +test t2 idx3 1 8.5000 +test t2 idx4 1 6.2000 +test t2 idx4 2 1.6875 +test t2 idx4 3 1.1304 +ANALYZE TABLE t2 PERSISTENT FOR COLUMNS() INDEXES ALL; +Table Op Msg_type Msg_text +test.t2 analyze status Engine-independent statistics collected +test.t2 analyze status OK +SELECT * FROM mysql.index_stats ORDER BY index_name, prefix_arity, table_name; +db_name table_name index_name prefix_arity avg_frequency +test t2 PRIMARY 1 1.0000 +test t2 PRIMARY 2 1.0000 +test t2 idx2 1 7.0000 +test t2 idx2 2 2.3846 +test t2 idx2 3 1.0000 +test t2 idx2 4 1.0000 +test t2 idx3 1 8.5000 +test t2 idx3 2 1.0000 +test t2 idx3 3 1.0000 +test t2 idx4 1 6.2000 +test t2 idx4 2 1.7222 +test t2 idx4 3 1.1154 +test t2 idx4 4 1.0000 +SELECT * FROM mysql.column_stats where column_name="b"; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram +test t2 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.2000 17.1250 6.4000 0 NULL NULL +ALTER TABLE t2 CHANGE COLUMN b b varchar(30); +SELECT * FROM mysql.index_stats ORDER BY index_name, prefix_arity, table_name; +db_name table_name index_name prefix_arity avg_frequency +test t2 idx2 1 7.0000 +test t2 idx2 2 2.3846 +test t2 idx3 1 8.5000 +SELECT * FROM mysql.column_stats where column_name="b"; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram +ANALYZE TABLE t2 PERSISTENT FOR COLUMNS ALL INDEXES ALL; +Table Op Msg_type Msg_text +test.t2 analyze status Engine-independent statistics collected +test.t2 analyze status OK +SELECT * FROM mysql.index_stats ORDER BY index_name, prefix_arity, table_name; +db_name table_name index_name prefix_arity avg_frequency +test t2 PRIMARY 1 1.0000 +test t2 PRIMARY 2 1.0000 +test t2 idx2 1 7.0000 +test t2 idx2 2 2.3846 +test t2 idx2 3 1.0000 +test t2 idx2 4 1.0000 +test t2 idx3 1 8.5000 +test t2 idx3 2 1.0000 +test t2 idx3 3 1.0000 +test t2 idx4 1 6.2000 +test t2 idx4 2 1.7222 +test t2 idx4 3 1.1154 +test t2 idx4 4 1.0000 +ALTER TABLE t2 CHANGE COLUMN b b varchar(32); +SELECT * FROM mysql.index_stats ORDER BY index_name, prefix_arity, table_name; +db_name table_name index_name prefix_arity avg_frequency +test t2 PRIMARY 1 1.0000 +test t2 PRIMARY 2 1.0000 +test t2 idx2 1 7.0000 +test t2 idx2 2 2.3846 +test t2 idx2 3 1.0000 +test t2 idx2 4 1.0000 +test t2 idx3 1 8.5000 +test t2 idx3 2 1.0000 +test t2 idx3 3 1.0000 +test t2 idx4 1 6.2000 +test t2 idx4 2 1.7222 +test t2 idx4 3 1.1154 +test t2 idx4 4 1.0000 +SELECT * FROM mysql.column_stats where column_name="b"; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram +test t2 b 0 zzzzzzzzzzzzzzzzzz 0.0000 13.9000 6.6667 0 NULL NULL +ANALYZE TABLE t2 PERSISTENT FOR COLUMNS ALL INDEXES ALL; +Table Op Msg_type Msg_text +test.t2 analyze status Engine-independent statistics collected +test.t2 analyze status OK +SELECT * FROM mysql.index_stats ORDER BY index_name, prefix_arity, table_name; +db_name table_name index_name prefix_arity avg_frequency +test t2 PRIMARY 1 1.0000 +test t2 PRIMARY 2 1.0000 +test t2 idx2 1 7.0000 +test t2 idx2 2 2.3846 +test t2 idx2 3 1.0000 +test t2 idx2 4 1.0000 +test t2 idx3 1 8.5000 +test t2 idx3 2 1.0000 +test t2 idx3 3 1.0000 +test t2 idx4 1 6.2000 +test t2 idx4 2 1.7222 +test t2 idx4 3 1.1154 +test t2 idx4 4 1.0000 +ALTER TABLE t2 DROP COLUMN b, DROP PRIMARY KEY, ADD PRIMARY KEY(a); +SELECT * FROM mysql.index_stats ORDER BY index_name, prefix_arity, table_name; +db_name table_name index_name prefix_arity avg_frequency +test t2 idx2 1 7.0000 +test t2 idx2 2 2.3846 +test t2 idx3 1 8.5000 +ANALYZE TABLE t2 PERSISTENT FOR COLUMNS() INDEXES ALL; +Table Op Msg_type Msg_text +test.t2 analyze status Engine-independent statistics collected +test.t2 analyze status OK +SELECT * FROM mysql.index_stats ORDER BY index_name, prefix_arity, table_name; +db_name table_name index_name prefix_arity avg_frequency +test t2 PRIMARY 1 1.0000 +test t2 idx2 1 7.0000 +test t2 idx2 2 2.3846 +test t2 idx2 3 1.0000 +test t2 idx3 1 8.5000 +test t2 idx3 2 1.0000 +test t2 idx4 1 6.2000 +test t2 idx4 2 2.2308 +test t2 idx4 3 1.0000 +set optimizer_switch='extended_keys=off'; +ALTER TABLE t1 +DROP INDEX idx1, +DROP INDEX idx4; +ALTER TABLE t1 +MODIFY COLUMN b text, +ADD INDEX idx1 (b(4), e), +ADD INDEX idx4 (e, b(4), d); +SELECT * FROM mysql.column_stats; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram +test t2 a 0 49 0.0000 4.0000 1.0000 0 NULL NULL +test t2 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL +test t2 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 0 NULL NULL +test t2 e 0.01 0.112 0.2250 8.0000 6.2000 0 NULL NULL +test t2 f 1 5 0.2000 1.0000 6.4000 0 NULL NULL +SELECT * FROM mysql.index_stats; +db_name table_name index_name prefix_arity avg_frequency +test t2 PRIMARY 1 1.0000 +test t2 idx2 1 7.0000 +test t2 idx2 2 2.3846 +test t2 idx2 3 1.0000 +test t2 idx3 1 8.5000 +test t2 idx3 2 1.0000 +test t2 idx4 1 6.2000 +test t2 idx4 2 2.2308 +test t2 idx4 3 1.0000 +ANALYZE TABLE t1; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze Warning Engine-independent statistics are not collected for column 'b' +test.t1 analyze status OK +SELECT * FROM mysql.column_stats; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram +test t1 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL +test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL +test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 0 NULL NULL +test t1 e 0.01 0.112 0.2250 8.0000 6.2000 0 NULL NULL +test t1 f 1 5 0.2000 1.0000 6.4000 0 NULL NULL +test t2 a 0 49 0.0000 4.0000 1.0000 0 NULL NULL +test t2 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL +test t2 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 0 NULL NULL +test t2 e 0.01 0.112 0.2250 8.0000 6.2000 0 NULL NULL +test t2 f 1 5 0.2000 1.0000 6.4000 0 NULL NULL +SELECT * FROM mysql.index_stats; +db_name table_name index_name prefix_arity avg_frequency +test t1 PRIMARY 1 1.0000 +test t1 idx1 1 NULL +test t1 idx1 2 NULL +test t1 idx2 1 7.0000 +test t1 idx2 2 2.3846 +test t1 idx3 1 8.5000 +test t1 idx4 1 6.2000 +test t1 idx4 2 NULL +test t1 idx4 3 NULL +test t2 PRIMARY 1 1.0000 +test t2 idx2 1 7.0000 +test t2 idx2 2 2.3846 +test t2 idx2 3 1.0000 +test t2 idx3 1 8.5000 +test t2 idx3 2 1.0000 +test t2 idx4 1 6.2000 +test t2 idx4 2 2.2308 +test t2 idx4 3 1.0000 +DELETE FROM mysql.table_stats; +DELETE FROM mysql.column_stats; +DELETE FROM mysql.index_stats; +ANALYZE TABLE mysql.column_stats PERSISTENT FOR ALL; +Table Op Msg_type Msg_text +mysql.column_stats analyze error Invalid argument +ANALYZE TABLE mysql.column_stats; +Table Op Msg_type Msg_text +mysql.column_stats analyze status OK +SELECT * FROM mysql.table_stats; +db_name table_name cardinality +SELECT * FROM mysql.column_stats; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram +SELECT * FROM mysql.index_stats; +db_name table_name index_name prefix_arity avg_frequency +set use_stat_tables='never'; +ANALYZE TABLE t1 PERSISTENT FOR ALL; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze Warning Engine-independent statistics are not collected for column 'b' +test.t1 analyze status Table is already up to date +SELECT * FROM mysql.table_stats; +db_name table_name cardinality +test t1 40 +SELECT * FROM mysql.column_stats; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram +test t1 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL +test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL +test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 0 NULL NULL +test t1 e 0.01 0.112 0.2250 8.0000 6.2000 0 NULL NULL +test t1 f 1 5 0.2000 1.0000 6.4000 0 NULL NULL +SELECT * FROM mysql.index_stats; +db_name table_name index_name prefix_arity avg_frequency +test t1 PRIMARY 1 1.0000 +test t1 idx1 1 NULL +test t1 idx1 2 NULL +test t1 idx2 1 7.0000 +test t1 idx2 2 2.3846 +test t1 idx3 1 8.5000 +test t1 idx4 1 6.2000 +test t1 idx4 2 NULL +test t1 idx4 3 NULL +DELETE FROM mysql.table_stats; +DELETE FROM mysql.column_stats; +DELETE FROM mysql.index_stats; +ANALYZE TABLE t1 PERSISTENT FOR COLUMNS(b) INDEXES(); +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze Warning Engine-independent statistics are not collected for column 'b' +test.t1 analyze status Table is already up to date +ANALYZE TABLE t1 PERSISTENT FOR columns(a,b) INDEXES(); +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze Warning Engine-independent statistics are not collected for column 'b' +test.t1 analyze status Table is already up to date +ANALYZE TABLE t1 PERSISTENT FOR columns(b) indexes(idx2); +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze Warning Engine-independent statistics are not collected for column 'b' +test.t1 analyze status Table is already up to date +ANALYZE TABLE t1 PERSISTENT FOR columns() indexes(idx2); +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status Table is already up to date +DELETE FROM mysql.table_stats; +DELETE FROM mysql.column_stats; +DELETE FROM mysql.index_stats; +DROP TABLE t1,t2; +set names utf8; +CREATE DATABASE world; +use world; +CREATE TABLE Country ( +Code char(3) NOT NULL default '', +Name char(52) NOT NULL default '', +SurfaceArea float(10,2) NOT NULL default '0.00', +Population int(11) NOT NULL default '0', +Capital int(11) default NULL, +PRIMARY KEY (Code), +UNIQUE INDEX (Name) +) CHARACTER SET utf8 COLLATE utf8_bin; +CREATE TABLE City ( +ID int(11) NOT NULL auto_increment, +Name char(35) NOT NULL default '', +Country char(3) NOT NULL default '', +Population int(11) NOT NULL default '0', +PRIMARY KEY (ID), +INDEX (Population), +INDEX (Country) +) CHARACTER SET utf8 COLLATE utf8_bin; +CREATE TABLE CountryLanguage ( +Country char(3) NOT NULL default '', +Language char(30) NOT NULL default '', +Percentage float(3,1) NOT NULL default '0.0', +PRIMARY KEY (Country, Language), +INDEX (Percentage) +) CHARACTER SET utf8 COLLATE utf8_bin; +set use_stat_tables='preferably'; +ANALYZE TABLE Country, City, CountryLanguage; +SELECT UPPER(db_name), UPPER(table_name), cardinality +FROM mysql.table_stats; +UPPER(db_name) UPPER(table_name) cardinality +WORLD CITY 4079 +WORLD COUNTRY 239 +WORLD COUNTRYLANGUAGE 984 +SELECT UPPER(db_name), UPPER(table_name), +column_name, min_value, max_value, nulls_ratio, avg_length, avg_frequency +FROM mysql.column_stats; +UPPER(db_name) UPPER(table_name) column_name min_value max_value nulls_ratio avg_length avg_frequency +WORLD CITY Country ABW ZWE 0.0000 3.0000 17.5819 +WORLD CITY ID 1 4079 0.0000 4.0000 1.0000 +WORLD CITY Name A Coruña (La Coruña) Ürgenc 0.0000 8.6416 1.0195 +WORLD CITY Population 42 10500000 0.0000 4.0000 1.0467 +WORLD COUNTRY Capital 1 4074 0.0293 4.0000 1.0000 +WORLD COUNTRY Code ABW ZWE 0.0000 3.0000 1.0000 +WORLD COUNTRY Name Afghanistan Zimbabwe 0.0000 10.1172 1.0000 +WORLD COUNTRY Population 0 1277558000 0.0000 4.0000 1.0575 +WORLD COUNTRY SurfaceArea 0.40 17075400.00 0.0000 4.0000 1.0042 +WORLD COUNTRYLANGUAGE Country ABW ZWE 0.0000 3.0000 4.2232 +WORLD COUNTRYLANGUAGE Language Abhyasi [South]Mande 0.0000 7.1778 2.1532 +WORLD COUNTRYLANGUAGE Percentage 0.0 99.9 0.0000 4.0000 2.7640 +SELECT UPPER(db_name), UPPER(table_name), +index_name, prefix_arity, avg_frequency +FROM mysql.index_stats; +UPPER(db_name) UPPER(table_name) index_name prefix_arity avg_frequency +WORLD CITY Country 1 17.5819 +WORLD CITY PRIMARY 1 1.0000 +WORLD CITY Population 1 1.0467 +WORLD COUNTRY Name 1 1.0000 +WORLD COUNTRY PRIMARY 1 1.0000 +WORLD COUNTRYLANGUAGE PRIMARY 1 4.2232 +WORLD COUNTRYLANGUAGE PRIMARY 2 1.0000 +WORLD COUNTRYLANGUAGE Percentage 1 2.7640 +use test; +set use_stat_tables='never'; +CREATE DATABASE world_innodb; +use world_innodb; +CREATE TABLE Country ( +Code char(3) NOT NULL default '', +Name char(52) NOT NULL default '', +SurfaceArea float(10,2) NOT NULL default '0.00', +Population int(11) NOT NULL default '0', +Capital int(11) default NULL, +PRIMARY KEY (Code), +UNIQUE INDEX (Name) +) CHARACTER SET utf8 COLLATE utf8_bin; +CREATE TABLE City ( +ID int(11) NOT NULL auto_increment, +Name char(35) NOT NULL default '', +Country char(3) NOT NULL default '', +Population int(11) NOT NULL default '0', +PRIMARY KEY (ID), +INDEX (Population), +INDEX (Country) +) CHARACTER SET utf8 COLLATE utf8_bin; +CREATE TABLE CountryLanguage ( +Country char(3) NOT NULL default '', +Language char(30) NOT NULL default '', +Percentage float(3,1) NOT NULL default '0.0', +PRIMARY KEY (Country, Language), +INDEX (Percentage) +) CHARACTER SET utf8 COLLATE utf8_bin; +ALTER TABLE Country ENGINE=InnoDB; +ALTER TABLE City ENGINE=InnoDB; +ALTER TABLE CountryLanguage ENGINE=InnoDB; +set use_stat_tables='preferably'; +ANALYZE TABLE Country, City, CountryLanguage; +SELECT UPPER(db_name), UPPER(table_name), cardinality +FROM mysql.table_stats; +UPPER(db_name) UPPER(table_name) cardinality +WORLD CITY 4079 +WORLD COUNTRY 239 +WORLD COUNTRYLANGUAGE 984 +WORLD_INNODB CITY 4079 +WORLD_INNODB COUNTRY 239 +WORLD_INNODB COUNTRYLANGUAGE 984 +SELECT UPPER(db_name), UPPER(table_name), +column_name, min_value, max_value, nulls_ratio, avg_length, avg_frequency +FROM mysql.column_stats; +UPPER(db_name) UPPER(table_name) column_name min_value max_value nulls_ratio avg_length avg_frequency +WORLD CITY Country ABW ZWE 0.0000 3.0000 17.5819 +WORLD CITY ID 1 4079 0.0000 4.0000 1.0000 +WORLD CITY Name A Coruña (La Coruña) Ürgenc 0.0000 8.6416 1.0195 +WORLD CITY Population 42 10500000 0.0000 4.0000 1.0467 +WORLD COUNTRY Capital 1 4074 0.0293 4.0000 1.0000 +WORLD COUNTRY Code ABW ZWE 0.0000 3.0000 1.0000 +WORLD COUNTRY Name Afghanistan Zimbabwe 0.0000 10.1172 1.0000 +WORLD COUNTRY Population 0 1277558000 0.0000 4.0000 1.0575 +WORLD COUNTRY SurfaceArea 0.40 17075400.00 0.0000 4.0000 1.0042 +WORLD COUNTRYLANGUAGE Country ABW ZWE 0.0000 3.0000 4.2232 +WORLD COUNTRYLANGUAGE Language Abhyasi [South]Mande 0.0000 7.1778 2.1532 +WORLD COUNTRYLANGUAGE Percentage 0.0 99.9 0.0000 4.0000 2.7640 +WORLD_INNODB CITY Country ABW ZWE 0.0000 3.0000 17.5819 +WORLD_INNODB CITY ID 1 4079 0.0000 4.0000 1.0000 +WORLD_INNODB CITY Name A Coruña (La Coruña) Ürgenc 0.0000 8.6416 1.0195 +WORLD_INNODB CITY Population 42 10500000 0.0000 4.0000 1.0467 +WORLD_INNODB COUNTRY Capital 1 4074 0.0293 4.0000 1.0000 +WORLD_INNODB COUNTRY Code ABW ZWE 0.0000 3.0000 1.0000 +WORLD_INNODB COUNTRY Name Afghanistan Zimbabwe 0.0000 10.1172 1.0000 +WORLD_INNODB COUNTRY Population 0 1277558000 0.0000 4.0000 1.0575 +WORLD_INNODB COUNTRY SurfaceArea 0.40 17075400.00 0.0000 4.0000 1.0042 +WORLD_INNODB COUNTRYLANGUAGE Country ABW ZWE 0.0000 3.0000 4.2232 +WORLD_INNODB COUNTRYLANGUAGE Language Abhyasi [South]Mande 0.0000 7.1778 2.1532 +WORLD_INNODB COUNTRYLANGUAGE Percentage 0.0 99.9 0.0000 4.0000 2.7640 +SELECT UPPER(db_name), UPPER(table_name), +index_name, prefix_arity, avg_frequency +FROM mysql.index_stats; +UPPER(db_name) UPPER(table_name) index_name prefix_arity avg_frequency +WORLD CITY Country 1 17.5819 +WORLD CITY PRIMARY 1 1.0000 +WORLD CITY Population 1 1.0467 +WORLD COUNTRY Name 1 1.0000 +WORLD COUNTRY PRIMARY 1 1.0000 +WORLD COUNTRYLANGUAGE PRIMARY 1 4.2232 +WORLD COUNTRYLANGUAGE PRIMARY 2 1.0000 +WORLD COUNTRYLANGUAGE Percentage 1 2.7640 +WORLD_INNODB CITY Country 1 17.5819 +WORLD_INNODB CITY PRIMARY 1 1.0000 +WORLD_INNODB CITY Population 1 1.0467 +WORLD_INNODB COUNTRY Name 1 1.0000 +WORLD_INNODB COUNTRY PRIMARY 1 1.0000 +WORLD_INNODB COUNTRYLANGUAGE PRIMARY 1 4.2232 +WORLD_INNODB COUNTRYLANGUAGE PRIMARY 2 1.0000 +WORLD_INNODB COUNTRYLANGUAGE Percentage 1 2.7640 +use world; +set use_stat_tables='preferably'; +set histogram_size=100; +set histogram_type=@SINGLE_PREC_TYPE; +ANALYZE TABLE CountryLanguage; +set histogram_size=254; +set histogram_type=@DOUBLE_PREC_TYPE; +ANALYZE TABLE City; +FLUSH TABLES; +select UPPER(db_name),UPPER(table_name),UPPER(column_name),min_value,max_value,nulls_ratio,avg_length,avg_frequency,hist_size,hist_type,decode_histogram(hist_type,histogram) from mysql.column_stats where UPPER(db_name)='WORLD' and UPPER(table_name)='COUNTRYLANGUAGE' and UPPER(column_name) = 'PERCENTAGE';; +UPPER(db_name) WORLD +UPPER(table_name) COUNTRYLANGUAGE +UPPER(column_name) PERCENTAGE +min_value 0.0 +max_value 99.9 +nulls_ratio 0.0000 +avg_length 4.0000 +avg_frequency 2.7640 +hist_size 100 +hist_type SINGLE_PREC_HB +decode_histogram(hist_type,histogram) 0.000,0.000,0.000,0.000,0.000,0.000,0.000,0.000,0.000,0.000,0.000,0.000,0.004,0.000,0.000,0.000,0.000,0.000,0.000,0.000,0.000,0.004,0.000,0.000,0.004,0.000,0.000,0.000,0.004,0.000,0.000,0.000,0.004,0.000,0.000,0.000,0.004,0.000,0.004,0.000,0.000,0.004,0.000,0.004,0.000,0.004,0.000,0.004,0.004,0.004,0.000,0.004,0.000,0.004,0.004,0.004,0.004,0.004,0.000,0.004,0.004,0.004,0.004,0.004,0.004,0.008,0.004,0.008,0.008,0.008,0.008,0.020,0.004,0.016,0.020,0.016,0.016,0.051,0.031,0.027,0.031,0.043,0.047,0.043,0.043,0.055,0.051,0.071,0.043,0.043,0.043,0.020,0.024,0.024,0.020,0.016,0.016,0.008,0.008,0.012,0.000 +select UPPER(db_name),UPPER(table_name),UPPER(column_name),min_value,max_value,nulls_ratio,avg_length,avg_frequency,hist_size,hist_type,decode_histogram(hist_type,histogram) from mysql.column_stats where UPPER(db_name)='WORLD' and UPPER(table_name)='CITY' and UPPER(column_name) = 'POPULATION';; +UPPER(db_name) WORLD +UPPER(table_name) CITY +UPPER(column_name) POPULATION +min_value 42 +max_value 10500000 +nulls_ratio 0.0000 +avg_length 4.0000 +avg_frequency 1.0467 +hist_size 254 +hist_type DOUBLE_PREC_HB +decode_histogram(hist_type,histogram) 0.00047,0.00198,0.00601,0.00008,0.00008,0.00005,0.00011,0.00006,0.00009,0.00008,0.00006,0.00009,0.00008,0.00009,0.00008,0.00009,0.00006,0.00006,0.00008,0.00008,0.00008,0.00011,0.00009,0.00008,0.00009,0.00006,0.00011,0.00006,0.00012,0.00012,0.00012,0.00012,0.00011,0.00011,0.00014,0.00011,0.00011,0.00011,0.00014,0.00006,0.00011,0.00009,0.00011,0.00009,0.00015,0.00015,0.00015,0.00009,0.00018,0.00015,0.00015,0.00015,0.00017,0.00018,0.00018,0.00015,0.00018,0.00020,0.00024,0.00021,0.00023,0.00027,0.00024,0.00024,0.00027,0.00023,0.00020,0.00029,0.00020,0.00027,0.00020,0.00027,0.00026,0.00034,0.00024,0.00034,0.00031,0.00037,0.00043,0.00038,0.00038,0.00035,0.00047,0.00056,0.00058,0.00041,0.00047,0.00056,0.00072,0.00044,0.00060,0.00072,0.00061,0.00072,0.00066,0.00085,0.00075,0.00078,0.00082,0.00073,0.00108,0.00089,0.00105,0.00105,0.00151,0.00150,0.00110,0.00145,0.00163,0.00160,0.00165,0.00232,0.00201,0.00371,0.00365,0.00383,0.00459,0.00583,0.00662,0.00984,0.00969,0.01080,0.01379,0.02063,0.04308,0.05960,0.15816,0.59464 +set histogram_type=@SINGLE_PREC_TYPE; +set histogram_size=0; +use test; +DROP DATABASE world; +SELECT UPPER(db_name), UPPER(table_name), cardinality +FROM mysql.table_stats; +UPPER(db_name) UPPER(table_name) cardinality +WORLD_INNODB CITY 4079 +WORLD_INNODB COUNTRY 239 +WORLD_INNODB COUNTRYLANGUAGE 984 +SELECT UPPER(db_name), UPPER(table_name), +column_name, min_value, max_value, nulls_ratio, avg_length, avg_frequency +FROM mysql.column_stats; +UPPER(db_name) UPPER(table_name) column_name min_value max_value nulls_ratio avg_length avg_frequency +WORLD_INNODB CITY Country ABW ZWE 0.0000 3.0000 17.5819 +WORLD_INNODB CITY ID 1 4079 0.0000 4.0000 1.0000 +WORLD_INNODB CITY Name A Coruña (La Coruña) Ürgenc 0.0000 8.6416 1.0195 +WORLD_INNODB CITY Population 42 10500000 0.0000 4.0000 1.0467 +WORLD_INNODB COUNTRY Capital 1 4074 0.0293 4.0000 1.0000 +WORLD_INNODB COUNTRY Code ABW ZWE 0.0000 3.0000 1.0000 +WORLD_INNODB COUNTRY Name Afghanistan Zimbabwe 0.0000 10.1172 1.0000 +WORLD_INNODB COUNTRY Population 0 1277558000 0.0000 4.0000 1.0575 +WORLD_INNODB COUNTRY SurfaceArea 0.40 17075400.00 0.0000 4.0000 1.0042 +WORLD_INNODB COUNTRYLANGUAGE Country ABW ZWE 0.0000 3.0000 4.2232 +WORLD_INNODB COUNTRYLANGUAGE Language Abhyasi [South]Mande 0.0000 7.1778 2.1532 +WORLD_INNODB COUNTRYLANGUAGE Percentage 0.0 99.9 0.0000 4.0000 2.7640 +SELECT UPPER(db_name), UPPER(table_name), +index_name, prefix_arity, avg_frequency +FROM mysql.index_stats; +UPPER(db_name) UPPER(table_name) index_name prefix_arity avg_frequency +WORLD_INNODB CITY Country 1 17.5819 +WORLD_INNODB CITY PRIMARY 1 1.0000 +WORLD_INNODB CITY Population 1 1.0467 +WORLD_INNODB COUNTRY Name 1 1.0000 +WORLD_INNODB COUNTRY PRIMARY 1 1.0000 +WORLD_INNODB COUNTRYLANGUAGE PRIMARY 1 4.2232 +WORLD_INNODB COUNTRYLANGUAGE PRIMARY 2 1.0000 +WORLD_INNODB COUNTRYLANGUAGE Percentage 1 2.7640 +DROP DATABASE world_innodb; +SELECT UPPER(db_name), UPPER(table_name), cardinality +FROM mysql.table_stats; +UPPER(db_name) UPPER(table_name) cardinality +SELECT UPPER(db_name), UPPER(table_name), +column_name, min_value, max_value, nulls_ratio, avg_length, avg_frequency +FROM mysql.column_stats; +UPPER(db_name) UPPER(table_name) column_name min_value max_value nulls_ratio avg_length avg_frequency +SELECT UPPER(db_name), UPPER(table_name), +index_name, prefix_arity, avg_frequency +FROM mysql.index_stats; +UPPER(db_name) UPPER(table_name) index_name prefix_arity avg_frequency +DELETE FROM mysql.table_stats; +DELETE FROM mysql.column_stats; +DELETE FROM mysql.index_stats; +# +# Bug mdev-4357: empty string as a value of the HIST_SIZE column +# from mysql.column_stats +# +create table t1 (a int); +insert into t1 values (1),(2),(3); +set histogram_size=10; +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +select db_name, table_name, column_name, +min_value, max_value, +nulls_ratio, avg_frequency, +hist_size, hist_type, decode_histogram(hist_type,histogram) +FROM mysql.column_stats +ORDER BY db_name, table_name, column_name; +db_name table_name column_name min_value max_value nulls_ratio avg_frequency hist_size hist_type decode_histogram(hist_type,histogram) +test t1 a 1 3 0.0000 1.0000 10 SINGLE_PREC_HB 0.000,0.000,0.000,0.498,0.000,0.000,0.000,0.502,0.000,0.000,0.000 +set histogram_size=default; +drop table t1; +# +# Bug mdev-4359: wrong setting of the HIST_SIZE column +# (see also mdev-4357) from mysql.column_stats +# +create table t1 ( a int); +insert into t1 values (1),(2),(3),(4),(5); +set histogram_size=10; +set histogram_type=@DOUBLE_PREC_TYPE; +show variables like 'histogram%'; +Variable_name Value +histogram_size 10 +histogram_type DOUBLE_PREC_HB +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +select db_name, table_name, column_name, +min_value, max_value, +nulls_ratio, avg_frequency, +hist_size, hist_type, decode_histogram(hist_type,histogram) +FROM mysql.column_stats +ORDER BY db_name, table_name, column_name; +db_name table_name column_name min_value max_value nulls_ratio avg_frequency hist_size hist_type decode_histogram(hist_type,histogram) +test t1 a 1 5 0.0000 1.0000 10 DOUBLE_PREC_HB 0.00000,0.24999,0.25000,0.25000,0.25000,0.00000 +set histogram_size=0; +set histogram_type=@SINGLE_PREC_TYPE; +drop table t1; +# +# Bug mdev-4369: histogram for a column with many distinct values +# +CREATE TABLE t1 (id int); +CREATE TABLE t2 (id int); +INSERT INTO t1 (id) VALUES (1), (1), (1),(1); +INSERT INTO t1 (id) SELECT id FROM t1; +INSERT INTO t1 SELECT id+1 FROM t1; +INSERT INTO t1 SELECT id+2 FROM t1; +INSERT INTO t1 SELECT id+4 FROM t1; +INSERT INTO t1 SELECT id+8 FROM t1; +INSERT INTO t1 SELECT id+16 FROM t1; +INSERT INTO t1 SELECT id+32 FROM t1; +INSERT INTO t1 SELECT id+64 FROM t1; +INSERT INTO t1 SELECT id+128 FROM t1; +INSERT INTO t1 SELECT id+256 FROM t1; +INSERT INTO t1 SELECT id+512 FROM t1; +INSERT INTO t2 SELECT id FROM t1 ORDER BY id*rand(); +SELECT COUNT(*) FROM t2; +COUNT(*) +8192 +SELECT COUNT(DISTINCT id) FROM t2; +COUNT(DISTINCT id) +1024 +set @@tmp_table_size=1024*16; +set @@max_heap_table_size=1024*16; +set histogram_size=63; +analyze table t2 persistent for all; +Table Op Msg_type Msg_text +test.t2 analyze status Engine-independent statistics collected +test.t2 analyze status OK +select db_name, table_name, column_name, +min_value, max_value, +nulls_ratio, avg_frequency, +hist_size, hist_type, decode_histogram(hist_type,histogram) +FROM mysql.column_stats; +db_name table_name column_name min_value max_value nulls_ratio avg_frequency hist_size hist_type decode_histogram(hist_type,histogram) +test t2 id 1 1024 0.0000 8.0000 63 SINGLE_PREC_HB 0.012,0.016,0.016,0.016,0.016,0.016,0.016,0.016,0.016,0.016,0.016,0.016,0.016,0.016,0.016,0.016,0.016,0.016,0.016,0.016,0.016,0.016,0.016,0.016,0.016,0.016,0.016,0.016,0.016,0.016,0.016,0.016,0.016,0.016,0.016,0.016,0.016,0.016,0.016,0.016,0.016,0.016,0.016,0.016,0.016,0.016,0.016,0.016,0.016,0.016,0.016,0.016,0.016,0.016,0.016,0.016,0.016,0.016,0.016,0.016,0.016,0.016,0.016,0.016 +set histogram_size=0; +drop table t1, t2; +set use_stat_tables=@save_use_stat_tables; +# +# Bug MDEV-7383: min/max value for a column not utf8 compatible +# +create table t1 (a varchar(100)) engine=MyISAM; +insert into t1 values(unhex('D879626AF872675F73E662F8')); +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +show warnings; +Level Code Message +select db_name, table_name, column_name, +HEX(min_value), HEX(max_value), +nulls_ratio, avg_frequency, +hist_size, hist_type, decode_histogram(hist_type,histogram) +FROM mysql.column_stats; +db_name table_name column_name HEX(min_value) HEX(max_value) nulls_ratio avg_frequency hist_size hist_type decode_histogram(hist_type,histogram) +test t1 a D879626AF872675F73E662F8 D879626AF872675F73E662F8 0.0000 1.0000 0 NULL NULL +drop table t1; +# +# MDEB-9744: session optimizer_use_condition_selectivity=5 causing SQL Error (1918): +# Encountered illegal value '' when converting to DECIMAL +# +set @save_optimizer_use_condition_selectivity= @@optimizer_use_condition_selectivity; +set optimizer_use_condition_selectivity=3, use_stat_tables=preferably; +create table t1 (id int(10),cost decimal(9,2)) engine=innodb; +ANALYZE TABLE t1 PERSISTENT FOR ALL; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +create temporary table t2 (id int); +insert into t2 (id) select id from t1 where cost > 0; +select * from t2; +id +set use_stat_tables=@save_use_stat_tables; +set optimizer_use_condition_selectivity= @save_optimizer_use_condition_selectivity; +drop table t1,t2; +# +# MDEV-16507: statistics for temporary tables should not be used +# +SET +@save_optimizer_use_condition_selectivity= @@optimizer_use_condition_selectivity; +SET @@use_stat_tables = preferably ; +SET @@optimizer_use_condition_selectivity = 4; +CREATE TABLE t1 ( +TIMESTAMP TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP +ON UPDATE CURRENT_TIMESTAMP +); +SET @had_t1_table= @@warning_count != 0; +CREATE TEMPORARY TABLE tmp_t1 LIKE t1; +INSERT INTO tmp_t1 VALUES (now()); +INSERT INTO t1 SELECT * FROM tmp_t1 WHERE @had_t1_table=0; +DROP TABLE t1; +SET +use_stat_tables=@save_use_stat_tables; +SET +optimizer_use_condition_selectivity= @save_optimizer_use_condition_selectivity; +# End of 10.0 tests +# +# MDEV-9590: Always print "Engine-independent statistic" warnings and +# might be filtering columns unintentionally from engines +# +set use_stat_tables='NEVER'; +create table t1 (test blob); +show variables like 'use_stat_tables'; +Variable_name Value +use_stat_tables NEVER +analyze table t1; +Table Op Msg_type Msg_text +test.t1 analyze status Table is already up to date +drop table t1; +# +# MDEV-10435 crash with bad stat tables +# +set use_stat_tables='preferably'; +call mtr.add_suppression("Column count of mysql.table_stats is wrong. Expected 3, found 1. The table is probably corrupted"); +rename table mysql.table_stats to test.table_stats; +flush tables; +create table t1 (a int); +rename table t1 to t2, t3 to t4; +ERROR 42S02: Table 'test.t3' doesn't exist +drop table t1; +rename table test.table_stats to mysql.table_stats; +rename table mysql.table_stats to test.table_stats; +create table mysql.table_stats (a int); +flush tables; +create table t1 (a int); +rename table t1 to t2, t3 to t4; +ERROR 42S02: Table 'test.t3' doesn't exist +drop table t1, mysql.table_stats; +rename table test.table_stats to mysql.table_stats; +# +# MDEV-19334: bool is_eits_usable(Field*): Assertion `field->table->stats_is_read' failed. +# +create temporary table t1(a int); +insert into t1 values (1),(2),(3); +set use_stat_tables=preferably; +set @optimizer_use_condition_selectivity= @@optimizer_use_condition_selectivity; +set optimizer_use_condition_selectivity=4; +select * from t1 where a >= 2; +a +2 +3 +drop table t1; +set @@optimizer_use_condition_selectivity= @save_optimizer_use_condition_selectivity; +set use_stat_tables=@save_use_stat_tables; +# +# Start of 10.2 tests +# +# +# MDEV-10134 Add full support for DEFAULT +# +CREATE TABLE t1 (a BLOB, b TEXT DEFAULT DECODE_HISTOGRAM(@SINGLE_PREC_TYPE,a)); +SHOW CREATE TABLE t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` blob DEFAULT NULL, + `b` text DEFAULT decode_histogram(@`SINGLE_PREC_TYPE`,`a`) +) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci +INSERT INTO t1 (a) VALUES (0x0000000000000000000000000101010101010101010202020303030304040404050505050606070707080809090A0A0B0C0D0D0E0E0F10111213131415161718191B1C1E202224292A2E33373B4850575F6A76818C9AA7B9C4CFDADFE5EBF0F4F8FAFCFF); +SELECT b FROM t1; +b +0.000,0.000,0.000,0.000,0.000,0.000,0.000,0.000,0.000,0.000,0.000,0.000,0.004,0.000,0.000,0.000,0.000,0.000,0.000,0.000,0.000,0.004,0.000,0.000,0.004,0.000,0.000,0.000,0.004,0.000,0.000,0.000,0.004,0.000,0.000,0.000,0.004,0.000,0.004,0.000,0.000,0.004,0.000,0.004,0.000,0.004,0.000,0.004,0.004,0.004,0.000,0.004,0.000,0.004,0.004,0.004,0.004,0.004,0.000,0.004,0.004,0.004,0.004,0.004,0.004,0.008,0.004,0.008,0.008,0.008,0.008,0.020,0.004,0.016,0.020,0.016,0.016,0.051,0.031,0.027,0.031,0.043,0.047,0.043,0.043,0.055,0.051,0.071,0.043,0.043,0.043,0.020,0.024,0.024,0.020,0.016,0.016,0.008,0.008,0.012,0.000 +DROP TABLE t1; +# +# End of 10.2 tests +# +set histogram_size=@save_histogram_size, histogram_type=@save_hist_type; +# +# Start of 10.4 tests +# +# +# Test analyze_sample_percentage system variable. +# +set @save_use_stat_tables=@@use_stat_tables; +set @save_analyze_sample_percentage=@@analyze_sample_percentage; +set session rand_seed1=42; +set session rand_seed2=62; +set use_stat_tables=PREFERABLY; +set histogram_size=10; +CREATE TABLE t1 (id int); +INSERT INTO t1 (id) VALUES (1), (1), (1), (1), (1), (1), (1); +INSERT INTO t1 (id) SELECT id FROM t1; +INSERT INTO t1 SELECT id+1 FROM t1; +INSERT INTO t1 SELECT id+2 FROM t1; +INSERT INTO t1 SELECT id+4 FROM t1; +INSERT INTO t1 SELECT id+8 FROM t1; +INSERT INTO t1 SELECT id+16 FROM t1; +INSERT INTO t1 SELECT id+32 FROM t1; +INSERT INTO t1 SELECT id+64 FROM t1; +INSERT INTO t1 SELECT id+128 FROM t1; +INSERT INTO t1 SELECT id+256 FROM t1; +INSERT INTO t1 SELECT id+512 FROM t1; +INSERT INTO t1 SELECT id+1024 FROM t1; +INSERT INTO t1 SELECT id+2048 FROM t1; +INSERT INTO t1 SELECT id+4096 FROM t1; +INSERT INTO t1 SELECT id+9192 FROM t1; +# +# This query will should show a full table scan analysis. +# +ANALYZE TABLE t1; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +select table_name, column_name, min_value, max_value, nulls_ratio, avg_length, avg_frequency, +DECODE_HISTOGRAM(hist_type, histogram) +from mysql.column_stats; +table_name column_name min_value max_value nulls_ratio avg_length avg_frequency DECODE_HISTOGRAM(hist_type, histogram) +t1 id 1 17384 0.0000 4.0000 14.0000 0.15705,0.15711,0.21463,0.15705,0.15711,0.15706 +set analyze_sample_percentage=0.1; +# +# This query will show an innacurate avg_frequency value. +# +ANALYZE TABLE t1; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status Table is already up to date +select table_name, column_name, min_value, max_value, nulls_ratio, avg_length, avg_frequency, +DECODE_HISTOGRAM(hist_type, histogram) +from mysql.column_stats; +table_name column_name min_value max_value nulls_ratio avg_length avg_frequency DECODE_HISTOGRAM(hist_type, histogram) +t1 id 111 17026 0.0000 4.0000 10.4739 0.13649,0.14922,0.16921,0.21141,0.18355,0.15012 +# +# This query will show a better avg_frequency value. +# +set analyze_sample_percentage=25; +ANALYZE TABLE t1; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status Table is already up to date +select table_name, column_name, min_value, max_value, nulls_ratio, avg_length, avg_frequency, +DECODE_HISTOGRAM(hist_type, histogram) +from mysql.column_stats; +table_name column_name min_value max_value nulls_ratio avg_length avg_frequency DECODE_HISTOGRAM(hist_type, histogram) +t1 id 1 17384 0.0000 4.0000 14.0401 0.15566,0.15590,0.15729,0.21538,0.15790,0.15787 +set analyze_sample_percentage=0; +# +# Test self adjusting sampling level. +# +ANALYZE TABLE t1; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status Table is already up to date +select table_name, column_name, min_value, max_value, nulls_ratio, avg_length, avg_frequency, +DECODE_HISTOGRAM(hist_type, histogram) +from mysql.column_stats; +table_name column_name min_value max_value nulls_ratio avg_length avg_frequency DECODE_HISTOGRAM(hist_type, histogram) +t1 id 1 17384 0.0000 4.0000 13.9812 0.15860,0.15767,0.21515,0.15573,0.15630,0.15654 +# +# Test record estimation is working properly. +# +select count(*) from t1; +count(*) +229376 +explain select * from t1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 229060 +set analyze_sample_percentage=100; +ANALYZE TABLE t1; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status Table is already up to date +select table_name, column_name, min_value, max_value, nulls_ratio, avg_length, avg_frequency, +DECODE_HISTOGRAM(hist_type, histogram) +from mysql.column_stats; +table_name column_name min_value max_value nulls_ratio avg_length avg_frequency DECODE_HISTOGRAM(hist_type, histogram) +t1 id 1 17384 0.0000 4.0000 14.0000 0.15705,0.15711,0.21463,0.15705,0.15711,0.15706 +explain select * from t1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 229376 +drop table t0; +drop table t1; +set analyze_sample_percentage=@save_analyze_sample_percentage; +set histogram_size=@save_histogram_size; +set use_stat_tables=@save_use_stat_tables; +set @@global.histogram_size=@save_histogram_size; |