diff options
Diffstat (limited to 'mysql-test/r/statistics.result')
| -rw-r--r-- | mysql-test/r/statistics.result | 705 |
1 files changed, 698 insertions, 7 deletions
diff --git a/mysql-test/r/statistics.result b/mysql-test/r/statistics.result index 99d3c04312b..a4e60e266d0 100644 --- a/mysql-test/r/statistics.result +++ b/mysql-test/r/statistics.result @@ -12,10 +12,10 @@ d date, e double, f bit(3), INDEX idx1 (b, e), -INDEX idx2(c, d), +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'), @@ -206,6 +206,662 @@ 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 +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 OK +SELECT * FROM mysql.table_stat; +db_name table_name cardinality +test t1 40 +test t3 17 +SELECT * FROM mysql.column_stat; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency +test t1 a 0 49 0.0000 4.0000 1.0000 +test t1 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.2000 17.1250 6.4000 +test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 +test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 +test t1 e 0.01 0.112 0.2250 8.0000 6.2000 +test t1 f 1 5 0.2000 1.0000 6.4000 +test t3 a 0 38 0.0000 4.0000 1.0000 +test t3 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.1765 18.0714 2.8000 +test t3 c aaaa dddddddd 0.1176 6.4000 3.7500 +SELECT * FROM mysql.index_stat; +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_stat; +db_name table_name cardinality +test s1 40 +test t3 17 +SELECT * FROM mysql.column_stat; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency +test s1 a 0 49 0.0000 4.0000 1.0000 +test s1 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.2000 17.1250 6.4000 +test s1 c aaaa dddddddd 0.1250 6.6571 7.0000 +test s1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 +test s1 e 0.01 0.112 0.2250 8.0000 6.2000 +test s1 f 1 5 0.2000 1.0000 6.4000 +test t3 a 0 38 0.0000 4.0000 1.0000 +test t3 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.1765 18.0714 2.8000 +test t3 c aaaa dddddddd 0.1176 6.4000 3.7500 +SELECT * FROM mysql.index_stat; +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_stat; +db_name table_name cardinality +test t1 40 +test t3 17 +SELECT * FROM mysql.column_stat; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency +test t1 a 0 49 0.0000 4.0000 1.0000 +test t1 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.2000 17.1250 6.4000 +test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 +test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 +test t1 e 0.01 0.112 0.2250 8.0000 6.2000 +test t1 f 1 5 0.2000 1.0000 6.4000 +test t3 a 0 38 0.0000 4.0000 1.0000 +test t3 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.1765 18.0714 2.8000 +test t3 c aaaa dddddddd 0.1176 6.4000 3.7500 +SELECT * FROM mysql.index_stat; +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_stat; +db_name table_name cardinality +test t1 40 +SELECT * FROM mysql.column_stat; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency +test t1 a 0 49 0.0000 4.0000 1.0000 +test t1 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.2000 17.1250 6.4000 +test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 +test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 +test t1 e 0.01 0.112 0.2250 8.0000 6.2000 +test t1 f 1 5 0.2000 1.0000 6.4000 +SELECT * FROM mysql.index_stat; +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 +SELECT * FROM mysql.column_stat; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency +test t1 a 0 49 0.0000 4.0000 1.0000 +test t1 x vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.2000 17.1250 6.4000 +test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 +test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 +test t1 y 0.01 0.112 0.2250 8.0000 6.2000 +test t1 f 1 5 0.2000 1.0000 6.4000 +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 +SELECT * FROM mysql.column_stat; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency +test t1 a 0 49 0.0000 4.0000 1.0000 +test t1 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.2000 17.1250 6.4000 +test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 +test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 +test t1 e 0.01 0.112 0.2250 8.0000 6.2000 +test t1 f 1 5 0.2000 1.0000 6.4000 +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 +SELECT * FROM mysql.table_stat; +db_name table_name cardinality +test s1 40 +SELECT * FROM mysql.column_stat; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency +test s1 a 0 49 0.0000 4.0000 1.0000 +test s1 x vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.2000 17.1250 6.4000 +test s1 c aaaa dddddddd 0.1250 6.6571 7.0000 +test s1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 +test s1 e 0.01 0.112 0.2250 8.0000 6.2000 +test s1 f 1 5 0.2000 1.0000 6.4000 +SELECT * FROM mysql.index_stat; +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 +SELECT * FROM mysql.table_stat; +db_name table_name cardinality +test t1 40 +SELECT * FROM mysql.column_stat; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency +test t1 a 0 49 0.0000 4.0000 1.0000 +test t1 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.2000 17.1250 6.4000 +test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 +test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 +test t1 e 0.01 0.112 0.2250 8.0000 6.2000 +test t1 f 1 5 0.2000 1.0000 6.4000 +SELECT * FROM mysql.index_stat; +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 +SELECT * FROM mysql.column_stat; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency +test t1 a 0 49 0.0000 4.0000 1.0000 +test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 +test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 +test t1 e 0.01 0.112 0.2250 8.0000 6.2000 +test t1 f 1 5 0.2000 1.0000 6.4000 +SELECT * FROM mysql.index_stat; +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 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 +SELECT * FROM mysql.column_stat; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency +test t1 a 0 49 0.0000 4.0000 1.0000 +test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 +test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 +test t1 e 0.01 0.112 0.2250 8.0000 6.2000 +test t1 f 1 5 0.2000 1.0000 6.4000 +SELECT * FROM mysql.index_stat; +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 OK +SELECT * FROM mysql.column_stat; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency +test t1 a 0 49 0.0000 4.0000 1.0000 +test t1 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.2000 17.1250 6.4000 +test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 +test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 +test t1 e 0.01 0.112 0.2250 8.0000 6.2000 +test t1 f 1 5 0.2000 1.0000 6.4000 +SELECT * FROM mysql.index_stat; +db_name table_name index_name prefix_arity avg_frequency +test t1 PRIMARY 1 1.0000 +test t1 idx4 3 1.1304 +test t1 idx4 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 idx1 2 1.6875 +test t1 idx1 1 6.4000 +SELECT * INTO OUTFILE 'MYSQLTEST_VARDIR/tmp/save_column_stat' + FIELDS TERMINATED BY ',' OPTIONALLY ENCLOSED BY '"' LINES TERMINATED BY '\n' + FROM mysql.column_stat WHERE column_name='b'; +SELECT * INTO OUTFILE 'MYSQLTEST_VARDIR/tmp/save_index_stat' + FIELDS TERMINATED BY ',' OPTIONALLY ENCLOSED BY '"' LINES TERMINATED BY '\n' + FROM mysql.index_stat 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 +SELECT * FROM mysql.column_stat; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency +test t1 a 0 49 0.0000 4.0000 1.0000 +test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 +test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 +test t1 e 0.01 0.112 0.2250 8.0000 6.2000 +test t1 f 1 5 0.2000 1.0000 6.4000 +SELECT * FROM mysql.index_stat; +db_name table_name index_name prefix_arity avg_frequency +test t1 PRIMARY 1 1.0000 +test t1 idx4 3 1.1304 +test t1 idx4 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 idx1 2 1.6875 +test t1 idx1 1 6.4000 +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 +SELECT * FROM mysql.column_stat; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency +test t1 a 0 49 0.0000 4.0000 1.0000 +test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 +test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 +test t1 e 0.01 0.112 0.2250 8.0000 6.2000 +test t1 f 1 5 0.2000 1.0000 6.4000 +SELECT * FROM mysql.index_stat; +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_stat' + INTO TABLE mysql.column_stat +FIELDS TERMINATED BY ',' OPTIONALLY ENCLOSED BY '"' LINES TERMINATED BY '\n'; +LOAD DATA INFILE 'MYSQLTEST_VARDIR/tmp/save_index_stat' + INTO TABLE mysql.index_stat +FIELDS TERMINATED BY ',' OPTIONALLY ENCLOSED BY '"' LINES TERMINATED BY '\n'; +SELECT * FROM mysql.column_stat; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency +test t1 a 0 49 0.0000 4.0000 1.0000 +test t1 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.2000 17.1250 6.4000 +test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 +test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 +test t1 e 0.01 0.112 0.2250 8.0000 6.2000 +test t1 f 1 5 0.2000 1.0000 6.4000 +SELECT * FROM mysql.index_stat; +db_name table_name index_name prefix_arity avg_frequency +test t1 PRIMARY 1 1.0000 +test t1 idx4 3 1.1304 +test t1 idx2 1 7.0000 +test t1 idx2 2 2.3846 +test t1 idx3 1 8.5000 +test t1 idx4 2 1.6875 +test t1 idx4 1 6.2000 +test t1 idx1 2 1.6875 +test t1 idx1 1 6.4000 +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 +SELECT * FROM mysql.column_stat; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency +test t1 a 0 49 0.0000 4.0000 1.0000 +test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 +test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 +test t1 e 0.01 0.112 0.2250 8.0000 6.2000 +test t1 f 1 5 0.2000 1.0000 6.4000 +SELECT * FROM mysql.index_stat; +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 +SELECT * FROM mysql.index_stat; +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 +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 +SELECT * FROM mysql.column_stat; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency +test t1 a 0 49 0.0000 4.0000 1.0000 +test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 +test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 +test t1 e 0.01 0.112 0.2250 8.0000 6.2000 +test t1 f 1 5 0.2000 1.0000 6.4000 +SELECT * FROM mysql.index_stat; +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 OK +SELECT * FROM mysql.column_stat; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency +test t1 a 0 49 0.0000 4.0000 1.0000 +test t1 b NULL NULL 1.0000 NULL NULL +test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 +test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 +test t1 e 0.01 0.112 0.2250 8.0000 6.2000 +test t1 f 1 5 0.2000 1.0000 6.4000 +SELECT * FROM mysql.index_stat; +db_name table_name index_name prefix_arity avg_frequency +test t1 PRIMARY 1 1.0000 +test t1 idx2 1 7.0000 +test t1 idx1 2 NULL +test t1 idx1 1 NULL +test t1 idx3 1 8.5000 +test t1 idx2 2 2.3846 +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 OK +SELECT * FROM mysql.column_stat; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency +test t1 a 0 49 0.0000 4.0000 1.0000 +test t1 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.2000 17.1250 6.4000 +test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 +test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 +test t1 e 0.01 0.112 0.2250 8.0000 6.2000 +test t1 f 1 5 0.2000 1.0000 6.4000 +SELECT * FROM mysql.index_stat; +db_name table_name index_name prefix_arity avg_frequency +test t1 PRIMARY 1 1.0000 +test t1 idx2 1 7.0000 +test t1 idx1 2 1.6875 +test t1 idx1 1 6.4000 +test t1 idx3 1 8.5000 +test t1 idx2 2 2.3846 +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 +SELECT * FROM mysql.column_stat; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency +test t1 a 0 49 0.0000 4.0000 1.0000 +test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 +test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 +test t1 e 0.01 0.112 0.2250 8.0000 6.2000 +test t1 f 1 5 0.2000 1.0000 6.4000 +SELECT * FROM mysql.index_stat; +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 +SELECT * FROM mysql.column_stat; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency +test t1 a 0 49 0.0000 4.0000 1.0000 +test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 +test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 +test t1 e 0.01 0.112 0.2250 8.0000 6.2000 +test t1 f 1 5 0.2000 1.0000 6.4000 +SELECT * FROM mysql.index_stat; +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 OK +SELECT * FROM mysql.column_stat; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency +test t1 a 0 49 0.0000 4.0000 1.0000 +test t1 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.2000 17.1250 6.4000 +test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 +test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 +test t1 e 0.01 0.112 0.2250 8.0000 6.2000 +test t1 f 1 5 0.2000 1.0000 6.4000 +SELECT * FROM mysql.index_stat; +db_name table_name index_name prefix_arity avg_frequency +test t1 PRIMARY 1 1.0000 +test t1 idx4 1 6.2000 +test t1 idx4 2 1.6875 +test t1 idx3 1 8.5000 +test t1 idx2 2 2.3846 +test t1 idx2 1 7.0000 +test t1 idx1 2 1.6875 +test t1 idx1 1 6.4000 +test t1 idx4 3 1.1304 DELETE FROM mysql.table_stat; DELETE FROM mysql.column_stat; DELETE FROM mysql.index_stat; @@ -227,9 +883,9 @@ db_name table_name cardinality test t1 40 SELECT * FROM mysql.column_stat; db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency -test t1 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.2000 17.1250 6.4000 test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 test t1 e 0.01 0.112 0.2250 8.0000 6.2000 +test t1 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.2000 17.1250 6.4000 SELECT * FROM mysql.index_stat; db_name table_name index_name prefix_arity avg_frequency test t1 idx2 1 7.0000 @@ -249,19 +905,19 @@ test t1 40 SELECT * FROM mysql.column_stat; db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency test t1 a 0 49 0.0000 4.0000 1.0000 -test t1 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.2000 17.1250 6.4000 test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 test t1 e 0.01 0.112 0.2250 8.0000 6.2000 test t1 f 1 5 0.2000 1.0000 6.4000 +test t1 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.2000 17.1250 6.4000 SELECT * FROM mysql.index_stat; db_name table_name index_name prefix_arity avg_frequency test t1 PRIMARY 1 1.0000 +test t1 idx3 1 8.5000 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 @@ -325,17 +981,17 @@ test.t1 analyze status OK SELECT * FROM mysql.column_stat; db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency test t1 a 0 49 0.0000 4.0000 1.0000 -test t1 b NULL NULL 0.2000 17.1250 NULL test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 test t1 e 0.01 0.112 0.2250 8.0000 6.2000 test t1 f 1 5 0.2000 1.0000 6.4000 +test t1 b NULL NULL 0.2000 17.1250 NULL SELECT * FROM mysql.index_stat; db_name table_name index_name prefix_arity avg_frequency test t1 PRIMARY 1 1.0000 +test t1 idx3 1 8.5000 test t1 idx2 1 7.0000 test t1 idx2 2 2.3846 -test t1 idx3 1 8.5000 test t1 idx1 1 NULL test t1 idx1 2 NULL test t1 idx4 1 6.2000 @@ -503,7 +1159,42 @@ WORLD_INNODB COUNTRYLANGUAGE PRIMARY 2 1.0000 WORLD_INNODB COUNTRYLANGUAGE Percentage 1 2.7640 use test; DROP DATABASE world; +SELECT * FROM mysql.table_stat; +db_name table_name cardinality +world_innodb Country 239 +world_innodb City 4079 +world_innodb CountryLanguage 984 +SELECT * FROM mysql.column_stat; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency +world_innodb Country Code ABW ZWE 0.0000 3.0000 1.0000 +world_innodb Country Name Afghanistan Zimbabwe 0.0000 10.1088 1.0000 +world_innodb Country SurfaceArea 0.40 17075400.00 0.0000 4.0000 1.0042 +world_innodb Country Population 0 1277558000 0.0000 4.0000 1.0575 +world_innodb Country Capital 1 4074 0.0293 4.0000 1.0000 +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 Country ABW ZWE 0.0000 3.0000 17.5819 +world_innodb City Population 42 10500000 0.0000 4.0000 1.0467 +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 * FROM mysql.index_stat; +db_name table_name index_name prefix_arity avg_frequency +world_innodb Country PRIMARY 1 1.0000 +world_innodb Country Name 1 1.0000 +world_innodb City PRIMARY 1 1.0000 +world_innodb City Population 1 1.0467 +world_innodb City Country 1 17.5819 +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 * FROM mysql.table_stat; +db_name table_name cardinality +SELECT * FROM mysql.column_stat; +db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency +SELECT * FROM mysql.index_stat; +db_name table_name index_name prefix_arity avg_frequency DELETE FROM mysql.table_stat; DELETE FROM mysql.column_stat; DELETE FROM mysql.index_stat; |