EVOLUTION-MANAGER

Edit File: partition_datetime_innodb.result

create table t1 (a timestamp not null DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP, primary key(a)) engine='InnoDB' partition by key (a) ( partition pa1 max_rows=20 min_rows=2, partition pa2 max_rows=30 min_rows=3, partition pa3 max_rows=30 min_rows=4, partition pa4 max_rows=40 min_rows=2); show create table t1; Table Create Table t1 CREATE TABLE `t1` ( `a` timestamp NOT NULL DEFAULT current_timestamp() ON UPDATE current_timestamp(), PRIMARY KEY (`a`) ) ENGINE=InnoDB DEFAULT CHARSET=latin1 PARTITION BY KEY (`a`) (PARTITION `pa1` MAX_ROWS = 20 MIN_ROWS = 2 ENGINE = InnoDB, PARTITION `pa2` MAX_ROWS = 30 MIN_ROWS = 3 ENGINE = InnoDB, PARTITION `pa3` MAX_ROWS = 30 MIN_ROWS = 4 ENGINE = InnoDB, PARTITION `pa4` MAX_ROWS = 40 MIN_ROWS = 2 ENGINE = InnoDB) insert into t1 values ('1975-01-01 21:21:21'), ('2020-12-31 12:10:30'), ('1980-10-14 03:03'), ('2000-06-15 23:59'); select * from t1; a 1975-01-01 21:21:21 1980-10-14 03:03:00 2000-06-15 23:59:00 2020-12-31 12:10:30 select * from t1 where a=19801014030300; a 1980-10-14 03:03:00 delete from t1 where a=19801014030300; select * from t1; a 1975-01-01 21:21:21 2000-06-15 23:59:00 2020-12-31 12:10:30 drop table t1; create table t2 (a timestamp not null DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP, primary key(a)) engine='InnoDB' partition by key (a) partitions 12; show create table t2; Table Create Table t2 CREATE TABLE `t2` ( `a` timestamp NOT NULL DEFAULT current_timestamp() ON UPDATE current_timestamp(), PRIMARY KEY (`a`) ) ENGINE=InnoDB DEFAULT CHARSET=latin1 PARTITION BY KEY (`a`) PARTITIONS 12 insert into t2 values ('1975-01-01 0:1:1'), ('2020-12-31 10:11:12'), ('1980-10-14 13:14:15'), ('2000-06-15 14:15:16'); select * from t2; a 1975-01-01 00:01:01 1980-10-14 13:14:15 2000-06-15 14:15:16 2020-12-31 10:11:12 select * from t2 where a='1980-10-14 13:14:15'; a 1980-10-14 13:14:15 delete from t2 where a='1980-10-14 13:14:15'; select * from t2; a 1975-01-01 00:01:01 2000-06-15 14:15:16 2020-12-31 10:11:12 delete from t2; 59 inserts; select count(*) from t2; count(*) 59 select * from t2; a 1971-01-01 00:00:01 1971-01-01 00:00:02 1971-01-01 00:00:03 1971-01-01 00:00:04 1971-01-01 00:00:05 1971-01-01 00:00:06 1971-01-01 00:00:07 1971-01-01 00:00:08 1971-01-01 00:00:09 1971-01-01 00:00:10 1971-01-01 00:00:11 1971-01-01 00:00:12 1971-01-01 00:00:13 1971-01-01 00:00:14 1971-01-01 00:00:15 1971-01-01 00:00:16 1971-01-01 00:00:17 1971-01-01 00:00:18 1971-01-01 00:00:19 1971-01-01 00:00:20 1971-01-01 00:00:21 1971-01-01 00:00:22 1971-01-01 00:00:23 1971-01-01 00:00:24 1971-01-01 00:00:25 1971-01-01 00:00:26 1971-01-01 00:00:27 1971-01-01 00:00:28 1971-01-01 00:00:29 1971-01-01 00:00:30 1971-01-01 00:00:31 1971-01-01 00:00:32 1971-01-01 00:00:33 1971-01-01 00:00:34 1971-01-01 00:00:35 1971-01-01 00:00:36 1971-01-01 00:00:37 1971-01-01 00:00:38 1971-01-01 00:00:39 1971-01-01 00:00:40 1971-01-01 00:00:41 1971-01-01 00:00:42 1971-01-01 00:00:43 1971-01-01 00:00:44 1971-01-01 00:00:45 1971-01-01 00:00:46 1971-01-01 00:00:47 1971-01-01 00:00:48 1971-01-01 00:00:49 1971-01-01 00:00:50 1971-01-01 00:00:51 1971-01-01 00:00:52 1971-01-01 00:00:53 1971-01-01 00:00:54 1971-01-01 00:00:55 1971-01-01 00:00:56 1971-01-01 00:00:57 1971-01-01 00:00:58 1971-01-01 00:00:59 drop table t2; create table t1 (a date not null, primary key(a)) engine='InnoDB' partition by key (a) ( partition pa1 max_rows=20 min_rows=2, partition pa2 max_rows=30 min_rows=3, partition pa3 max_rows=30 min_rows=4, partition pa4 max_rows=40 min_rows=2); show create table t1; Table Create Table t1 CREATE TABLE `t1` ( `a` date NOT NULL, PRIMARY KEY (`a`) ) ENGINE=InnoDB DEFAULT CHARSET=latin1 PARTITION BY KEY (`a`) (PARTITION `pa1` MAX_ROWS = 20 MIN_ROWS = 2 ENGINE = InnoDB, PARTITION `pa2` MAX_ROWS = 30 MIN_ROWS = 3 ENGINE = InnoDB, PARTITION `pa3` MAX_ROWS = 30 MIN_ROWS = 4 ENGINE = InnoDB, PARTITION `pa4` MAX_ROWS = 40 MIN_ROWS = 2 ENGINE = InnoDB) insert into t1 values ('1975-01-01'), ('2020-12-31'), ('1980-10-14'), ('2000-06-15'); select * from t1; a 1975-01-01 1980-10-14 2000-06-15 2020-12-31 select * from t1 where a=19801014; a 1980-10-14 delete from t1 where a=19801014; select * from t1; a 1975-01-01 2000-06-15 2020-12-31 drop table t1; create table t2 (a date not null, primary key(a)) engine='InnoDB' partition by key (a) partitions 12; show create table t2; Table Create Table t2 CREATE TABLE `t2` ( `a` date NOT NULL, PRIMARY KEY (`a`) ) ENGINE=InnoDB DEFAULT CHARSET=latin1 PARTITION BY KEY (`a`) PARTITIONS 12 insert into t2 values ('1975-01-01'), ('2020-12-31'), ('1980-10-14'), ('2000-06-15'); select * from t2; a 1975-01-01 1980-10-14 2000-06-15 2020-12-31 select * from t2 where a='1980-10-14'; a 1980-10-14 delete from t2 where a='1980-10-14'; select * from t2; a 1975-01-01 2000-06-15 2020-12-31 delete from t2; 28 inserts; select count(*) from t2; count(*) 84 select * from t2; a 1970-01-01 1970-01-02 1970-01-03 1970-01-04 1970-01-05 1970-01-06 1970-01-07 1970-01-08 1970-01-09 1970-01-10 1970-01-11 1970-01-12 1970-01-13 1970-01-14 1970-01-15 1970-01-16 1970-01-17 1970-01-18 1970-01-19 1970-01-20 1970-01-21 1970-01-22 1970-01-23 1970-01-24 1970-01-25 1970-01-26 1970-01-27 1970-01-28 1970-02-01 1970-02-02 1970-02-03 1970-02-04 1970-02-05 1970-02-06 1970-02-07 1970-02-08 1970-02-09 1970-02-10 1970-02-11 1970-02-12 1970-02-13 1970-02-14 1970-02-15 1970-02-16 1970-02-17 1970-02-18 1970-02-19 1970-02-20 1970-02-21 1970-02-22 1970-02-23 1970-02-24 1970-02-25 1970-02-26 1970-02-27 1970-02-28 1970-03-01 1970-03-02 1970-03-03 1970-03-04 1970-03-05 1970-03-06 1970-03-07 1970-03-08 1970-03-09 1970-03-10 1970-03-11 1970-03-12 1970-03-13 1970-03-14 1970-03-15 1970-03-16 1970-03-17 1970-03-18 1970-03-19 1970-03-20 1970-03-21 1970-03-22 1970-03-23 1970-03-24 1970-03-25 1970-03-26 1970-03-27 1970-03-28 drop table t2; create table t3 (a date not null, primary key(a)) engine='InnoDB' partition by range (month(a)) subpartition by key (a) subpartitions 3 ( partition quarter1 values less than (4), partition quarter2 values less than (7), partition quarter3 values less than (10), partition quarter4 values less than (13) ); show create table t3; Table Create Table t3 CREATE TABLE `t3` ( `a` date NOT NULL, PRIMARY KEY (`a`) ) ENGINE=InnoDB DEFAULT CHARSET=latin1 PARTITION BY RANGE (month(`a`)) SUBPARTITION BY KEY (`a`) SUBPARTITIONS 3 (PARTITION `quarter1` VALUES LESS THAN (4) ENGINE = InnoDB, PARTITION `quarter2` VALUES LESS THAN (7) ENGINE = InnoDB, PARTITION `quarter3` VALUES LESS THAN (10) ENGINE = InnoDB, PARTITION `quarter4` VALUES LESS THAN (13) ENGINE = InnoDB) 12 inserts; select count(*) from t3; count(*) 12 select * from t3; a 1970-01-01 1970-02-01 1970-03-01 1970-04-01 1970-05-01 1970-06-01 1970-07-01 1970-08-01 1970-09-01 1970-10-01 1970-11-01 1970-12-01 drop table t3; create table t4 (a date not null, primary key(a)) engine='InnoDB' partition by list (month(a)) subpartition by key (a) subpartitions 3 ( partition quarter1 values in (1,2,3), partition quarter2 values in (4,5,6), partition quarter3 values in (7,8,9), partition quarter4 values in (10,11,12) ); show create table t4; Table Create Table t4 CREATE TABLE `t4` ( `a` date NOT NULL, PRIMARY KEY (`a`) ) ENGINE=InnoDB DEFAULT CHARSET=latin1 PARTITION BY LIST (month(`a`)) SUBPARTITION BY KEY (`a`) SUBPARTITIONS 3 (PARTITION `quarter1` VALUES IN (1,2,3) ENGINE = InnoDB, PARTITION `quarter2` VALUES IN (4,5,6) ENGINE = InnoDB, PARTITION `quarter3` VALUES IN (7,8,9) ENGINE = InnoDB, PARTITION `quarter4` VALUES IN (10,11,12) ENGINE = InnoDB) 12 inserts; select count(*) from t4; count(*) 12 select * from t4; a 1970-01-01 1970-02-01 1970-03-01 1970-04-01 1970-05-01 1970-06-01 1970-07-01 1970-08-01 1970-09-01 1970-10-01 1970-11-01 1970-12-01 drop table t4; create table t1 (a time not null, primary key(a)) engine='InnoDB' partition by key (a) ( partition pa1 max_rows=20 min_rows=2, partition pa2 max_rows=30 min_rows=3, partition pa3 max_rows=30 min_rows=4, partition pa4 max_rows=40 min_rows=2); show create table t1; Table Create Table t1 CREATE TABLE `t1` ( `a` time NOT NULL, PRIMARY KEY (`a`) ) ENGINE=InnoDB DEFAULT CHARSET=latin1 PARTITION BY KEY (`a`) (PARTITION `pa1` MAX_ROWS = 20 MIN_ROWS = 2 ENGINE = InnoDB, PARTITION `pa2` MAX_ROWS = 30 MIN_ROWS = 3 ENGINE = InnoDB, PARTITION `pa3` MAX_ROWS = 30 MIN_ROWS = 4 ENGINE = InnoDB, PARTITION `pa4` MAX_ROWS = 40 MIN_ROWS = 2 ENGINE = InnoDB) insert into t1 values ('21:21:21'), ('12:10:30'), ('03:03:03'), ('23:59'); select * from t1; a 03:03:03 12:10:30 21:21:21 23:59:00 select * from t1 where a=030303; a 03:03:03 delete from t1 where a=030303; select * from t1; a 12:10:30 21:21:21 23:59:00 drop table t1; create table t2 (a time not null, primary key(a)) engine='InnoDB' partition by key (a) partitions 12; show create table t2; Table Create Table t2 CREATE TABLE `t2` ( `a` time NOT NULL, PRIMARY KEY (`a`) ) ENGINE=InnoDB DEFAULT CHARSET=latin1 PARTITION BY KEY (`a`) PARTITIONS 12 insert into t2 values ('0:1:1'), ('10:11:12'), ('13:14:15'), ('14:15:16'); select * from t2; a 00:01:01 10:11:12 13:14:15 14:15:16 select * from t2 where a='13:14:15'; a 13:14:15 delete from t2 where a='13:14:15'; select * from t2; a 00:01:01 10:11:12 14:15:16 delete from t2; 59 inserts; select count(*) from t2; count(*) 59 select * from t2; a 00:01:01 00:01:02 00:01:03 00:01:04 00:01:05 00:01:06 00:01:07 00:01:08 00:01:09 00:01:10 00:01:11 00:01:12 00:01:13 00:01:14 00:01:15 00:01:16 00:01:17 00:01:18 00:01:19 00:01:20 00:01:21 00:01:22 00:01:23 00:01:24 00:01:25 00:01:26 00:01:27 00:01:28 00:01:29 00:01:30 00:01:31 00:01:32 00:01:33 00:01:34 00:01:35 00:01:36 00:01:37 00:01:38 00:01:39 00:01:40 00:01:41 00:01:42 00:01:43 00:01:44 00:01:45 00:01:46 00:01:47 00:01:48 00:01:49 00:01:50 00:01:51 00:01:52 00:01:53 00:01:54 00:01:55 00:01:56 00:01:57 00:01:58 00:01:59 drop table t2; create table t3 (a time not null, primary key(a)) engine='InnoDB' partition by range (second(a)) subpartition by key (a) subpartitions 3 ( partition quarter1 values less than (16), partition quarter2 values less than (31), partition quarter3 values less than (46), partition quarter4 values less than (61) ); show create table t3; Table Create Table t3 CREATE TABLE `t3` ( `a` time NOT NULL, PRIMARY KEY (`a`) ) ENGINE=InnoDB DEFAULT CHARSET=latin1 PARTITION BY RANGE (second(`a`)) SUBPARTITION BY KEY (`a`) SUBPARTITIONS 3 (PARTITION `quarter1` VALUES LESS THAN (16) ENGINE = InnoDB, PARTITION `quarter2` VALUES LESS THAN (31) ENGINE = InnoDB, PARTITION `quarter3` VALUES LESS THAN (46) ENGINE = InnoDB, PARTITION `quarter4` VALUES LESS THAN (61) ENGINE = InnoDB) 59 inserts; select count(*) from t3; count(*) 59 select * from t3; a 10:00:01 10:00:02 10:00:03 10:00:04 10:00:05 10:00:06 10:00:07 10:00:08 10:00:09 10:00:10 10:00:11 10:00:12 10:00:13 10:00:14 10:00:15 10:00:16 10:00:17 10:00:18 10:00:19 10:00:20 10:00:21 10:00:22 10:00:23 10:00:24 10:00:25 10:00:26 10:00:27 10:00:28 10:00:29 10:00:30 10:00:31 10:00:32 10:00:33 10:00:34 10:00:35 10:00:36 10:00:37 10:00:38 10:00:39 10:00:40 10:00:41 10:00:42 10:00:43 10:00:44 10:00:45 10:00:46 10:00:47 10:00:48 10:00:49 10:00:50 10:00:51 10:00:52 10:00:53 10:00:54 10:00:55 10:00:56 10:00:57 10:00:58 10:00:59 drop table t3; create table t4 (a time not null, primary key(a)) engine='InnoDB' partition by list (second(a)) subpartition by key (a) subpartitions 3 ( partition quarter1 values in (1,2,3,4,5,6,7,8,9,10,11,12,13,14,15), partition quarter2 values in (16,17,18,19,20,21,22,23,24,25,26,27,28,29,30), partition quarter3 values in (31,32,33,34,35,36,37,38,39,40,41,42,43,44,45), partition quarter4 values in (46,47,48,49,50,51,52,53,54,55,56,57,58,59,60) ); show create table t4; Table Create Table t4 CREATE TABLE `t4` ( `a` time NOT NULL, PRIMARY KEY (`a`) ) ENGINE=InnoDB DEFAULT CHARSET=latin1 PARTITION BY LIST (second(`a`)) SUBPARTITION BY KEY (`a`) SUBPARTITIONS 3 (PARTITION `quarter1` VALUES IN (1,2,3,4,5,6,7,8,9,10,11,12,13,14,15) ENGINE = InnoDB, PARTITION `quarter2` VALUES IN (16,17,18,19,20,21,22,23,24,25,26,27,28,29,30) ENGINE = InnoDB, PARTITION `quarter3` VALUES IN (31,32,33,34,35,36,37,38,39,40,41,42,43,44,45) ENGINE = InnoDB, PARTITION `quarter4` VALUES IN (46,47,48,49,50,51,52,53,54,55,56,57,58,59,60) ENGINE = InnoDB) 59 inserts; select count(*) from t4; count(*) 59 select * from t4; a 10:00:01 10:00:02 10:00:03 10:00:04 10:00:05 10:00:06 10:00:07 10:00:08 10:00:09 10:00:10 10:00:11 10:00:12 10:00:13 10:00:14 10:00:15 10:00:16 10:00:17 10:00:18 10:00:19 10:00:20 10:00:21 10:00:22 10:00:23 10:00:24 10:00:25 10:00:26 10:00:27 10:00:28 10:00:29 10:00:30 10:00:31 10:00:32 10:00:33 10:00:34 10:00:35 10:00:36 10:00:37 10:00:38 10:00:39 10:00:40 10:00:41 10:00:42 10:00:43 10:00:44 10:00:45 10:00:46 10:00:47 10:00:48 10:00:49 10:00:50 10:00:51 10:00:52 10:00:53 10:00:54 10:00:55 10:00:56 10:00:57 10:00:58 10:00:59 drop table t4; create table t1 (a datetime not null, primary key(a)) engine='InnoDB' partition by key (a) ( partition pa1 max_rows=20 min_rows=2, partition pa2 max_rows=30 min_rows=3, partition pa3 max_rows=30 min_rows=4, partition pa4 max_rows=40 min_rows=2); show create table t1; Table Create Table t1 CREATE TABLE `t1` ( `a` datetime NOT NULL, PRIMARY KEY (`a`) ) ENGINE=InnoDB DEFAULT CHARSET=latin1 PARTITION BY KEY (`a`) (PARTITION `pa1` MAX_ROWS = 20 MIN_ROWS = 2 ENGINE = InnoDB, PARTITION `pa2` MAX_ROWS = 30 MIN_ROWS = 3 ENGINE = InnoDB, PARTITION `pa3` MAX_ROWS = 30 MIN_ROWS = 4 ENGINE = InnoDB, PARTITION `pa4` MAX_ROWS = 40 MIN_ROWS = 2 ENGINE = InnoDB) insert into t1 values ('1975-01-01 21:21:21'), ('2020-12-31 12:10:30'), ('1980-10-14 03:03'), ('2000-06-15 23:59'); select * from t1; a 1975-01-01 21:21:21 1980-10-14 03:03:00 2000-06-15 23:59:00 2020-12-31 12:10:30 select * from t1 where a=19801014030300; a 1980-10-14 03:03:00 delete from t1 where a=19801014030300; select * from t1; a 1975-01-01 21:21:21 2000-06-15 23:59:00 2020-12-31 12:10:30 drop table t1; create table t2 (a datetime not null, primary key(a)) engine='InnoDB' partition by key (a) partitions 12; show create table t2; Table Create Table t2 CREATE TABLE `t2` ( `a` datetime NOT NULL, PRIMARY KEY (`a`) ) ENGINE=InnoDB DEFAULT CHARSET=latin1 PARTITION BY KEY (`a`) PARTITIONS 12 insert into t2 values ('1975-01-01 0:1:1'), ('2020-12-31 10:11:12'), ('1980-10-14 13:14:15'), ('2000-06-15 14:15:16'); select * from t2; a 1975-01-01 00:01:01 1980-10-14 13:14:15 2000-06-15 14:15:16 2020-12-31 10:11:12 select * from t2 where a='1980-10-14 13:14:15'; a 1980-10-14 13:14:15 delete from t2 where a='1980-10-14 13:14:15'; select * from t2; a 1975-01-01 00:01:01 2000-06-15 14:15:16 2020-12-31 10:11:12 delete from t2; 59 inserts; select count(*) from t2; count(*) 59 select * from t2; a 1970-01-01 00:00:01 1970-01-01 00:00:02 1970-01-01 00:00:03 1970-01-01 00:00:04 1970-01-01 00:00:05 1970-01-01 00:00:06 1970-01-01 00:00:07 1970-01-01 00:00:08 1970-01-01 00:00:09 1970-01-01 00:00:10 1970-01-01 00:00:11 1970-01-01 00:00:12 1970-01-01 00:00:13 1970-01-01 00:00:14 1970-01-01 00:00:15 1970-01-01 00:00:16 1970-01-01 00:00:17 1970-01-01 00:00:18 1970-01-01 00:00:19 1970-01-01 00:00:20 1970-01-01 00:00:21 1970-01-01 00:00:22 1970-01-01 00:00:23 1970-01-01 00:00:24 1970-01-01 00:00:25 1970-01-01 00:00:26 1970-01-01 00:00:27 1970-01-01 00:00:28 1970-01-01 00:00:29 1970-01-01 00:00:30 1970-01-01 00:00:31 1970-01-01 00:00:32 1970-01-01 00:00:33 1970-01-01 00:00:34 1970-01-01 00:00:35 1970-01-01 00:00:36 1970-01-01 00:00:37 1970-01-01 00:00:38 1970-01-01 00:00:39 1970-01-01 00:00:40 1970-01-01 00:00:41 1970-01-01 00:00:42 1970-01-01 00:00:43 1970-01-01 00:00:44 1970-01-01 00:00:45 1970-01-01 00:00:46 1970-01-01 00:00:47 1970-01-01 00:00:48 1970-01-01 00:00:49 1970-01-01 00:00:50 1970-01-01 00:00:51 1970-01-01 00:00:52 1970-01-01 00:00:53 1970-01-01 00:00:54 1970-01-01 00:00:55 1970-01-01 00:00:56 1970-01-01 00:00:57 1970-01-01 00:00:58 1970-01-01 00:00:59 drop table t2; create table t3 (a datetime not null, primary key(a)) engine='InnoDB' partition by range (month(a)) subpartition by key (a) subpartitions 3 ( partition quarter1 values less than (4), partition quarter2 values less than (7), partition quarter3 values less than (10), partition quarter4 values less than (13) ); show create table t3; Table Create Table t3 CREATE TABLE `t3` ( `a` datetime NOT NULL, PRIMARY KEY (`a`) ) ENGINE=InnoDB DEFAULT CHARSET=latin1 PARTITION BY RANGE (month(`a`)) SUBPARTITION BY KEY (`a`) SUBPARTITIONS 3 (PARTITION `quarter1` VALUES LESS THAN (4) ENGINE = InnoDB, PARTITION `quarter2` VALUES LESS THAN (7) ENGINE = InnoDB, PARTITION `quarter3` VALUES LESS THAN (10) ENGINE = InnoDB, PARTITION `quarter4` VALUES LESS THAN (13) ENGINE = InnoDB) 12 inserts; select count(*) from t3; count(*) 12 select * from t3; a 1970-01-01 00:00:00 1970-02-01 00:00:00 1970-03-01 00:00:00 1970-04-01 00:00:00 1970-05-01 00:00:00 1970-06-01 00:00:00 1970-07-01 00:00:00 1970-08-01 00:00:00 1970-09-01 00:00:00 1970-10-01 00:00:00 1970-11-01 00:00:00 1970-12-01 00:00:00 drop table t3; create table t4 (a datetime not null, primary key(a)) engine='InnoDB' partition by list (month(a)) subpartition by key (a) subpartitions 3 ( partition quarter1 values in (1,2,3), partition quarter2 values in (4,5,6), partition quarter3 values in (7,8,9), partition quarter4 values in (10,11,12) ); show create table t4; Table Create Table t4 CREATE TABLE `t4` ( `a` datetime NOT NULL, PRIMARY KEY (`a`) ) ENGINE=InnoDB DEFAULT CHARSET=latin1 PARTITION BY LIST (month(`a`)) SUBPARTITION BY KEY (`a`) SUBPARTITIONS 3 (PARTITION `quarter1` VALUES IN (1,2,3) ENGINE = InnoDB, PARTITION `quarter2` VALUES IN (4,5,6) ENGINE = InnoDB, PARTITION `quarter3` VALUES IN (7,8,9) ENGINE = InnoDB, PARTITION `quarter4` VALUES IN (10,11,12) ENGINE = InnoDB) 12 inserts; select count(*) from t4; count(*) 12 select * from t4; a 1970-01-01 00:00:00 1970-02-01 00:00:00 1970-03-01 00:00:00 1970-04-01 00:00:00 1970-05-01 00:00:00 1970-06-01 00:00:00 1970-07-01 00:00:00 1970-08-01 00:00:00 1970-09-01 00:00:00 1970-10-01 00:00:00 1970-11-01 00:00:00 1970-12-01 00:00:00 drop table t4; create table t1 (a year not null, primary key(a)) engine='InnoDB' partition by key (a) ( partition pa1 max_rows=20 min_rows=2, partition pa2 max_rows=30 min_rows=3, partition pa3 max_rows=30 min_rows=4, partition pa4 max_rows=40 min_rows=2); show create table t1; Table Create Table t1 CREATE TABLE `t1` ( `a` year(4) NOT NULL, PRIMARY KEY (`a`) ) ENGINE=InnoDB DEFAULT CHARSET=latin1 PARTITION BY KEY (`a`) (PARTITION `pa1` MAX_ROWS = 20 MIN_ROWS = 2 ENGINE = InnoDB, PARTITION `pa2` MAX_ROWS = 30 MIN_ROWS = 3 ENGINE = InnoDB, PARTITION `pa3` MAX_ROWS = 30 MIN_ROWS = 4 ENGINE = InnoDB, PARTITION `pa4` MAX_ROWS = 40 MIN_ROWS = 2 ENGINE = InnoDB) insert into t1 values ('1975'), (2020), ('1980'), ('2000'); select * from t1; a 1975 1980 2000 2020 select * from t1 where a=1980; a 1980 delete from t1 where a=1980; select * from t1; a 1975 2000 2020 drop table t1; create table t2 (a year not null, primary key(a)) engine='InnoDB' partition by key (a) partitions 12; show create table t2; Table Create Table t2 CREATE TABLE `t2` ( `a` year(4) NOT NULL, PRIMARY KEY (`a`) ) ENGINE=InnoDB DEFAULT CHARSET=latin1 PARTITION BY KEY (`a`) PARTITIONS 12 insert into t2 values ('1975'), ('2020'), ('1980'), ('2000'); select * from t2; a 1975 1980 2000 2020 select * from t2 where a='1980'; a 1980 delete from t2 where a='1980'; select * from t2; a 1975 2000 2020 delete from t2; 255 inserts; Warnings: Warning 1264 Out of range value for column 'a' at row 1 select count(*) from t2; count(*) 255 select * from t2; a 0000 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 drop table t2;