mariadb/mysql-test/suite/parts/r/partition_datetime_myisam.result

create table t1 (a timestamp not null, primary key(a)) engine='MyISAM' 
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=MyISAM DEFAULT CHARSET=latin1
/*!50100 PARTITION BY KEY (a)
(PARTITION pa1 MAX_ROWS = 20 MIN_ROWS = 2 ENGINE = MyISAM,
 PARTITION pa2 MAX_ROWS = 30 MIN_ROWS = 3 ENGINE = MyISAM,
 PARTITION pa3 MAX_ROWS = 30 MIN_ROWS = 4 ENGINE = MyISAM,
 PARTITION pa4 MAX_ROWS = 40 MIN_ROWS = 2 ENGINE = MyISAM) */
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, primary key(a)) engine='MyISAM' 
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=MyISAM DEFAULT CHARSET=latin1
/*!50100 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;
insert into t2 values (19710101000000+59);
insert into t2 values (19710101000000+58);
insert into t2 values (19710101000000+57);
insert into t2 values (19710101000000+56);
insert into t2 values (19710101000000+55);
insert into t2 values (19710101000000+54);
insert into t2 values (19710101000000+53);
insert into t2 values (19710101000000+52);
insert into t2 values (19710101000000+51);
insert into t2 values (19710101000000+50);
insert into t2 values (19710101000000+49);
insert into t2 values (19710101000000+48);
insert into t2 values (19710101000000+47);
insert into t2 values (19710101000000+46);
insert into t2 values (19710101000000+45);
insert into t2 values (19710101000000+44);
insert into t2 values (19710101000000+43);
insert into t2 values (19710101000000+42);
insert into t2 values (19710101000000+41);
insert into t2 values (19710101000000+40);
insert into t2 values (19710101000000+39);
insert into t2 values (19710101000000+38);
insert into t2 values (19710101000000+37);
insert into t2 values (19710101000000+36);
insert into t2 values (19710101000000+35);
insert into t2 values (19710101000000+34);
insert into t2 values (19710101000000+33);
insert into t2 values (19710101000000+32);
insert into t2 values (19710101000000+31);
insert into t2 values (19710101000000+30);
insert into t2 values (19710101000000+29);
insert into t2 values (19710101000000+28);
insert into t2 values (19710101000000+27);
insert into t2 values (19710101000000+26);
insert into t2 values (19710101000000+25);
insert into t2 values (19710101000000+24);
insert into t2 values (19710101000000+23);
insert into t2 values (19710101000000+22);
insert into t2 values (19710101000000+21);
insert into t2 values (19710101000000+20);
insert into t2 values (19710101000000+19);
insert into t2 values (19710101000000+18);
insert into t2 values (19710101000000+17);
insert into t2 values (19710101000000+16);
insert into t2 values (19710101000000+15);
insert into t2 values (19710101000000+14);
insert into t2 values (19710101000000+13);
insert into t2 values (19710101000000+12);
insert into t2 values (19710101000000+11);
insert into t2 values (19710101000000+10);
insert into t2 values (19710101000000+9);
insert into t2 values (19710101000000+8);
insert into t2 values (19710101000000+7);
insert into t2 values (19710101000000+6);
insert into t2 values (19710101000000+5);
insert into t2 values (19710101000000+4);
insert into t2 values (19710101000000+3);
insert into t2 values (19710101000000+2);
insert into t2 values (19710101000000+1);
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 t3 (a timestamp not null, primary key(a)) engine='MyISAM' 
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` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
  PRIMARY KEY (`a`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1
/*!50100 PARTITION BY RANGE (month(a))
SUBPARTITION BY KEY (a)
SUBPARTITIONS 3
(PARTITION quarter1 VALUES LESS THAN (4) ENGINE = MyISAM,
 PARTITION quarter2 VALUES LESS THAN (7) ENGINE = MyISAM,
 PARTITION quarter3 VALUES LESS THAN (10) ENGINE = MyISAM,
 PARTITION quarter4 VALUES LESS THAN (13) ENGINE = MyISAM) */
12 inserts;
insert into t3 values (date_add('1970-01-01 00:00:00',interval 12-1 month));
insert into t3 values (date_add('1970-01-01 00:00:00',interval 11-1 month));
insert into t3 values (date_add('1970-01-01 00:00:00',interval 10-1 month));
insert into t3 values (date_add('1970-01-01 00:00:00',interval 9-1 month));
insert into t3 values (date_add('1970-01-01 00:00:00',interval 8-1 month));
insert into t3 values (date_add('1970-01-01 00:00:00',interval 7-1 month));
insert into t3 values (date_add('1970-01-01 00:00:00',interval 6-1 month));
insert into t3 values (date_add('1970-01-01 00:00:00',interval 5-1 month));
insert into t3 values (date_add('1970-01-01 00:00:00',interval 4-1 month));
insert into t3 values (date_add('1970-01-01 00:00:00',interval 3-1 month));
insert into t3 values (date_add('1970-01-01 00:00:00',interval 2-1 month));
insert into t3 values (date_add('1970-01-01 00:00:00',interval 1-1 month));
Warnings:
Warning	1264	Out of range value for column 'a' at row 1
select count(*) from t3;
count(*)
12
select * from t3;
a
0000-00-00 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 timestamp not null, primary key(a)) engine='MyISAM' 
partition by list (month(a)) subpartition by key (a)
subpartitions 3 (
partition quarter1 values in (0,1,2,3),
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` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
  PRIMARY KEY (`a`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1
/*!50100 PARTITION BY LIST (month(a))
SUBPARTITION BY KEY (a)
SUBPARTITIONS 3
(PARTITION quarter1 VALUES IN (0,1,2,3) ENGINE = MyISAM,
 PARTITION quarter2 VALUES IN (4,5,6) ENGINE = MyISAM,
 PARTITION quarter3 VALUES IN (7,8,9) ENGINE = MyISAM,
 PARTITION quarter4 VALUES IN (10,11,12) ENGINE = MyISAM) */
12 inserts;
insert into t4 values (date_add('1970-01-01 00:00:00',interval 12-1 month));
insert into t4 values (date_add('1970-01-01 00:00:00',interval 11-1 month));
insert into t4 values (date_add('1970-01-01 00:00:00',interval 10-1 month));
insert into t4 values (date_add('1970-01-01 00:00:00',interval 9-1 month));
insert into t4 values (date_add('1970-01-01 00:00:00',interval 8-1 month));
insert into t4 values (date_add('1970-01-01 00:00:00',interval 7-1 month));
insert into t4 values (date_add('1970-01-01 00:00:00',interval 6-1 month));
insert into t4 values (date_add('1970-01-01 00:00:00',interval 5-1 month));
insert into t4 values (date_add('1970-01-01 00:00:00',interval 4-1 month));
insert into t4 values (date_add('1970-01-01 00:00:00',interval 3-1 month));
insert into t4 values (date_add('1970-01-01 00:00:00',interval 2-1 month));
insert into t4 values (date_add('1970-01-01 00:00:00',interval 1-1 month));
Warnings:
Warning	1264	Out of range value for column 'a' at row 1
select count(*) from t4;
count(*)
12
select * from t4;
a
0000-00-00 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 date not null, primary key(a)) engine='MyISAM' 
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=MyISAM DEFAULT CHARSET=latin1
/*!50100 PARTITION BY KEY (a)
(PARTITION pa1 MAX_ROWS = 20 MIN_ROWS = 2 ENGINE = MyISAM,
 PARTITION pa2 MAX_ROWS = 30 MIN_ROWS = 3 ENGINE = MyISAM,
 PARTITION pa3 MAX_ROWS = 30 MIN_ROWS = 4 ENGINE = MyISAM,
 PARTITION pa4 MAX_ROWS = 40 MIN_ROWS = 2 ENGINE = MyISAM) */
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='MyISAM' 
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=MyISAM DEFAULT CHARSET=latin1
/*!50100 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;
insert into t2 values (19700101+28-1);
insert into t2 values (19700201+28-1);
insert into t2 values (19700301+28-1);
insert into t2 values (19700101+27-1);
insert into t2 values (19700201+27-1);
insert into t2 values (19700301+27-1);
insert into t2 values (19700101+26-1);
insert into t2 values (19700201+26-1);
insert into t2 values (19700301+26-1);
insert into t2 values (19700101+25-1);
insert into t2 values (19700201+25-1);
insert into t2 values (19700301+25-1);
insert into t2 values (19700101+24-1);
insert into t2 values (19700201+24-1);
insert into t2 values (19700301+24-1);
insert into t2 values (19700101+23-1);
insert into t2 values (19700201+23-1);
insert into t2 values (19700301+23-1);
insert into t2 values (19700101+22-1);
insert into t2 values (19700201+22-1);
insert into t2 values (19700301+22-1);
insert into t2 values (19700101+21-1);
insert into t2 values (19700201+21-1);
insert into t2 values (19700301+21-1);
insert into t2 values (19700101+20-1);
insert into t2 values (19700201+20-1);
insert into t2 values (19700301+20-1);
insert into t2 values (19700101+19-1);
insert into t2 values (19700201+19-1);
insert into t2 values (19700301+19-1);
insert into t2 values (19700101+18-1);
insert into t2 values (19700201+18-1);
insert into t2 values (19700301+18-1);
insert into t2 values (19700101+17-1);
insert into t2 values (19700201+17-1);
insert into t2 values (19700301+17-1);
insert into t2 values (19700101+16-1);
insert into t2 values (19700201+16-1);
insert into t2 values (19700301+16-1);
insert into t2 values (19700101+15-1);
insert into t2 values (19700201+15-1);
insert into t2 values (19700301+15-1);
insert into t2 values (19700101+14-1);
insert into t2 values (19700201+14-1);
insert into t2 values (19700301+14-1);
insert into t2 values (19700101+13-1);
insert into t2 values (19700201+13-1);
insert into t2 values (19700301+13-1);
insert into t2 values (19700101+12-1);
insert into t2 values (19700201+12-1);
insert into t2 values (19700301+12-1);
insert into t2 values (19700101+11-1);
insert into t2 values (19700201+11-1);
insert into t2 values (19700301+11-1);
insert into t2 values (19700101+10-1);
insert into t2 values (19700201+10-1);
insert into t2 values (19700301+10-1);
insert into t2 values (19700101+9-1);
insert into t2 values (19700201+9-1);
insert into t2 values (19700301+9-1);
insert into t2 values (19700101+8-1);
insert into t2 values (19700201+8-1);
insert into t2 values (19700301+8-1);
insert into t2 values (19700101+7-1);
insert into t2 values (19700201+7-1);
insert into t2 values (19700301+7-1);
insert into t2 values (19700101+6-1);
insert into t2 values (19700201+6-1);
insert into t2 values (19700301+6-1);
insert into t2 values (19700101+5-1);
insert into t2 values (19700201+5-1);
insert into t2 values (19700301+5-1);
insert into t2 values (19700101+4-1);
insert into t2 values (19700201+4-1);
insert into t2 values (19700301+4-1);
insert into t2 values (19700101+3-1);
insert into t2 values (19700201+3-1);
insert into t2 values (19700301+3-1);
insert into t2 values (19700101+2-1);
insert into t2 values (19700201+2-1);
insert into t2 values (19700301+2-1);
insert into t2 values (19700101+1-1);
insert into t2 values (19700201+1-1);
insert into t2 values (19700301+1-1);
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='MyISAM' 
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=MyISAM DEFAULT CHARSET=latin1
/*!50100 PARTITION BY RANGE (month(a))
SUBPARTITION BY KEY (a)
SUBPARTITIONS 3
(PARTITION quarter1 VALUES LESS THAN (4) ENGINE = MyISAM,
 PARTITION quarter2 VALUES LESS THAN (7) ENGINE = MyISAM,
 PARTITION quarter3 VALUES LESS THAN (10) ENGINE = MyISAM,
 PARTITION quarter4 VALUES LESS THAN (13) ENGINE = MyISAM) */
12 inserts;
insert into t3 values (adddate(19700101,interval 12-1 month));
insert into t3 values (adddate(19700101,interval 11-1 month));
insert into t3 values (adddate(19700101,interval 10-1 month));
insert into t3 values (adddate(19700101,interval 9-1 month));
insert into t3 values (adddate(19700101,interval 8-1 month));
insert into t3 values (adddate(19700101,interval 7-1 month));
insert into t3 values (adddate(19700101,interval 6-1 month));
insert into t3 values (adddate(19700101,interval 5-1 month));
insert into t3 values (adddate(19700101,interval 4-1 month));
insert into t3 values (adddate(19700101,interval 3-1 month));
insert into t3 values (adddate(19700101,interval 2-1 month));
insert into t3 values (adddate(19700101,interval 1-1 month));
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='MyISAM' 
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=MyISAM DEFAULT CHARSET=latin1
/*!50100 PARTITION BY LIST (month(a))
SUBPARTITION BY KEY (a)
SUBPARTITIONS 3
(PARTITION quarter1 VALUES IN (1,2,3) ENGINE = MyISAM,
 PARTITION quarter2 VALUES IN (4,5,6) ENGINE = MyISAM,
 PARTITION quarter3 VALUES IN (7,8,9) ENGINE = MyISAM,
 PARTITION quarter4 VALUES IN (10,11,12) ENGINE = MyISAM) */
12 inserts;
insert into t4 values (adddate(19700101,interval 12-1 month));
insert into t4 values (adddate(19700101,interval 11-1 month));
insert into t4 values (adddate(19700101,interval 10-1 month));
insert into t4 values (adddate(19700101,interval 9-1 month));
insert into t4 values (adddate(19700101,interval 8-1 month));
insert into t4 values (adddate(19700101,interval 7-1 month));
insert into t4 values (adddate(19700101,interval 6-1 month));
insert into t4 values (adddate(19700101,interval 5-1 month));
insert into t4 values (adddate(19700101,interval 4-1 month));
insert into t4 values (adddate(19700101,interval 3-1 month));
insert into t4 values (adddate(19700101,interval 2-1 month));
insert into t4 values (adddate(19700101,interval 1-1 month));
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='MyISAM' 
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=MyISAM DEFAULT CHARSET=latin1
/*!50100 PARTITION BY KEY (a)
(PARTITION pa1 MAX_ROWS = 20 MIN_ROWS = 2 ENGINE = MyISAM,
 PARTITION pa2 MAX_ROWS = 30 MIN_ROWS = 3 ENGINE = MyISAM,
 PARTITION pa3 MAX_ROWS = 30 MIN_ROWS = 4 ENGINE = MyISAM,
 PARTITION pa4 MAX_ROWS = 40 MIN_ROWS = 2 ENGINE = MyISAM) */
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='MyISAM' 
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=MyISAM DEFAULT CHARSET=latin1
/*!50100 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;
insert into t2 values (000100+59);
insert into t2 values (000100+58);
insert into t2 values (000100+57);
insert into t2 values (000100+56);
insert into t2 values (000100+55);
insert into t2 values (000100+54);
insert into t2 values (000100+53);
insert into t2 values (000100+52);
insert into t2 values (000100+51);
insert into t2 values (000100+50);
insert into t2 values (000100+49);
insert into t2 values (000100+48);
insert into t2 values (000100+47);
insert into t2 values (000100+46);
insert into t2 values (000100+45);
insert into t2 values (000100+44);
insert into t2 values (000100+43);
insert into t2 values (000100+42);
insert into t2 values (000100+41);
insert into t2 values (000100+40);
insert into t2 values (000100+39);
insert into t2 values (000100+38);
insert into t2 values (000100+37);
insert into t2 values (000100+36);
insert into t2 values (000100+35);
insert into t2 values (000100+34);
insert into t2 values (000100+33);
insert into t2 values (000100+32);
insert into t2 values (000100+31);
insert into t2 values (000100+30);
insert into t2 values (000100+29);
insert into t2 values (000100+28);
insert into t2 values (000100+27);
insert into t2 values (000100+26);
insert into t2 values (000100+25);
insert into t2 values (000100+24);
insert into t2 values (000100+23);
insert into t2 values (000100+22);
insert into t2 values (000100+21);
insert into t2 values (000100+20);
insert into t2 values (000100+19);
insert into t2 values (000100+18);
insert into t2 values (000100+17);
insert into t2 values (000100+16);
insert into t2 values (000100+15);
insert into t2 values (000100+14);
insert into t2 values (000100+13);
insert into t2 values (000100+12);
insert into t2 values (000100+11);
insert into t2 values (000100+10);
insert into t2 values (000100+9);
insert into t2 values (000100+8);
insert into t2 values (000100+7);
insert into t2 values (000100+6);
insert into t2 values (000100+5);
insert into t2 values (000100+4);
insert into t2 values (000100+3);
insert into t2 values (000100+2);
insert into t2 values (000100+1);
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='MyISAM' 
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=MyISAM DEFAULT CHARSET=latin1
/*!50100 PARTITION BY RANGE (second(a))
SUBPARTITION BY KEY (a)
SUBPARTITIONS 3
(PARTITION quarter1 VALUES LESS THAN (16) ENGINE = MyISAM,
 PARTITION quarter2 VALUES LESS THAN (31) ENGINE = MyISAM,
 PARTITION quarter3 VALUES LESS THAN (46) ENGINE = MyISAM,
 PARTITION quarter4 VALUES LESS THAN (61) ENGINE = MyISAM) */
59 inserts;
insert into t3 values (100000+59);
insert into t3 values (100000+58);
insert into t3 values (100000+57);
insert into t3 values (100000+56);
insert into t3 values (100000+55);
insert into t3 values (100000+54);
insert into t3 values (100000+53);
insert into t3 values (100000+52);
insert into t3 values (100000+51);
insert into t3 values (100000+50);
insert into t3 values (100000+49);
insert into t3 values (100000+48);
insert into t3 values (100000+47);
insert into t3 values (100000+46);
insert into t3 values (100000+45);
insert into t3 values (100000+44);
insert into t3 values (100000+43);
insert into t3 values (100000+42);
insert into t3 values (100000+41);
insert into t3 values (100000+40);
insert into t3 values (100000+39);
insert into t3 values (100000+38);
insert into t3 values (100000+37);
insert into t3 values (100000+36);
insert into t3 values (100000+35);
insert into t3 values (100000+34);
insert into t3 values (100000+33);
insert into t3 values (100000+32);
insert into t3 values (100000+31);
insert into t3 values (100000+30);
insert into t3 values (100000+29);
insert into t3 values (100000+28);
insert into t3 values (100000+27);
insert into t3 values (100000+26);
insert into t3 values (100000+25);
insert into t3 values (100000+24);
insert into t3 values (100000+23);
insert into t3 values (100000+22);
insert into t3 values (100000+21);
insert into t3 values (100000+20);
insert into t3 values (100000+19);
insert into t3 values (100000+18);
insert into t3 values (100000+17);
insert into t3 values (100000+16);
insert into t3 values (100000+15);
insert into t3 values (100000+14);
insert into t3 values (100000+13);
insert into t3 values (100000+12);
insert into t3 values (100000+11);
insert into t3 values (100000+10);
insert into t3 values (100000+9);
insert into t3 values (100000+8);
insert into t3 values (100000+7);
insert into t3 values (100000+6);
insert into t3 values (100000+5);
insert into t3 values (100000+4);
insert into t3 values (100000+3);
insert into t3 values (100000+2);
insert into t3 values (100000+1);
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='MyISAM' 
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=MyISAM DEFAULT CHARSET=latin1
/*!50100 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 = MyISAM,
 PARTITION quarter2 VALUES IN (16,17,18,19,20,21,22,23,24,25,26,27,28,29,30) ENGINE = MyISAM,
 PARTITION quarter3 VALUES IN (31,32,33,34,35,36,37,38,39,40,41,42,43,44,45) ENGINE = MyISAM,
 PARTITION quarter4 VALUES IN (46,47,48,49,50,51,52,53,54,55,56,57,58,59,60) ENGINE = MyISAM) */
59 inserts;
insert into t4 values (100000+59);
insert into t4 values (100000+58);
insert into t4 values (100000+57);
insert into t4 values (100000+56);
insert into t4 values (100000+55);
insert into t4 values (100000+54);
insert into t4 values (100000+53);
insert into t4 values (100000+52);
insert into t4 values (100000+51);
insert into t4 values (100000+50);
insert into t4 values (100000+49);
insert into t4 values (100000+48);
insert into t4 values (100000+47);
insert into t4 values (100000+46);
insert into t4 values (100000+45);
insert into t4 values (100000+44);
insert into t4 values (100000+43);
insert into t4 values (100000+42);
insert into t4 values (100000+41);
insert into t4 values (100000+40);
insert into t4 values (100000+39);
insert into t4 values (100000+38);
insert into t4 values (100000+37);
insert into t4 values (100000+36);
insert into t4 values (100000+35);
insert into t4 values (100000+34);
insert into t4 values (100000+33);
insert into t4 values (100000+32);
insert into t4 values (100000+31);
insert into t4 values (100000+30);
insert into t4 values (100000+29);
insert into t4 values (100000+28);
insert into t4 values (100000+27);
insert into t4 values (100000+26);
insert into t4 values (100000+25);
insert into t4 values (100000+24);
insert into t4 values (100000+23);
insert into t4 values (100000+22);
insert into t4 values (100000+21);
insert into t4 values (100000+20);
insert into t4 values (100000+19);
insert into t4 values (100000+18);
insert into t4 values (100000+17);
insert into t4 values (100000+16);
insert into t4 values (100000+15);
insert into t4 values (100000+14);
insert into t4 values (100000+13);
insert into t4 values (100000+12);
insert into t4 values (100000+11);
insert into t4 values (100000+10);
insert into t4 values (100000+9);
insert into t4 values (100000+8);
insert into t4 values (100000+7);
insert into t4 values (100000+6);
insert into t4 values (100000+5);
insert into t4 values (100000+4);
insert into t4 values (100000+3);
insert into t4 values (100000+2);
insert into t4 values (100000+1);
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='MyISAM' 
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=MyISAM DEFAULT CHARSET=latin1
/*!50100 PARTITION BY KEY (a)
(PARTITION pa1 MAX_ROWS = 20 MIN_ROWS = 2 ENGINE = MyISAM,
 PARTITION pa2 MAX_ROWS = 30 MIN_ROWS = 3 ENGINE = MyISAM,
 PARTITION pa3 MAX_ROWS = 30 MIN_ROWS = 4 ENGINE = MyISAM,
 PARTITION pa4 MAX_ROWS = 40 MIN_ROWS = 2 ENGINE = MyISAM) */
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='MyISAM' 
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=MyISAM DEFAULT CHARSET=latin1
/*!50100 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;
insert into t2 values (19700101000000+59);
insert into t2 values (19700101000000+58);
insert into t2 values (19700101000000+57);
insert into t2 values (19700101000000+56);
insert into t2 values (19700101000000+55);
insert into t2 values (19700101000000+54);
insert into t2 values (19700101000000+53);
insert into t2 values (19700101000000+52);
insert into t2 values (19700101000000+51);
insert into t2 values (19700101000000+50);
insert into t2 values (19700101000000+49);
insert into t2 values (19700101000000+48);
insert into t2 values (19700101000000+47);
insert into t2 values (19700101000000+46);
insert into t2 values (19700101000000+45);
insert into t2 values (19700101000000+44);
insert into t2 values (19700101000000+43);
insert into t2 values (19700101000000+42);
insert into t2 values (19700101000000+41);
insert into t2 values (19700101000000+40);
insert into t2 values (19700101000000+39);
insert into t2 values (19700101000000+38);
insert into t2 values (19700101000000+37);
insert into t2 values (19700101000000+36);
insert into t2 values (19700101000000+35);
insert into t2 values (19700101000000+34);
insert into t2 values (19700101000000+33);
insert into t2 values (19700101000000+32);
insert into t2 values (19700101000000+31);
insert into t2 values (19700101000000+30);
insert into t2 values (19700101000000+29);
insert into t2 values (19700101000000+28);
insert into t2 values (19700101000000+27);
insert into t2 values (19700101000000+26);
insert into t2 values (19700101000000+25);
insert into t2 values (19700101000000+24);
insert into t2 values (19700101000000+23);
insert into t2 values (19700101000000+22);
insert into t2 values (19700101000000+21);
insert into t2 values (19700101000000+20);
insert into t2 values (19700101000000+19);
insert into t2 values (19700101000000+18);
insert into t2 values (19700101000000+17);
insert into t2 values (19700101000000+16);
insert into t2 values (19700101000000+15);
insert into t2 values (19700101000000+14);
insert into t2 values (19700101000000+13);
insert into t2 values (19700101000000+12);
insert into t2 values (19700101000000+11);
insert into t2 values (19700101000000+10);
insert into t2 values (19700101000000+9);
insert into t2 values (19700101000000+8);
insert into t2 values (19700101000000+7);
insert into t2 values (19700101000000+6);
insert into t2 values (19700101000000+5);
insert into t2 values (19700101000000+4);
insert into t2 values (19700101000000+3);
insert into t2 values (19700101000000+2);
insert into t2 values (19700101000000+1);
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='MyISAM' 
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=MyISAM DEFAULT CHARSET=latin1
/*!50100 PARTITION BY RANGE (month(a))
SUBPARTITION BY KEY (a)
SUBPARTITIONS 3
(PARTITION quarter1 VALUES LESS THAN (4) ENGINE = MyISAM,
 PARTITION quarter2 VALUES LESS THAN (7) ENGINE = MyISAM,
 PARTITION quarter3 VALUES LESS THAN (10) ENGINE = MyISAM,
 PARTITION quarter4 VALUES LESS THAN (13) ENGINE = MyISAM) */
12 inserts;
insert into t3 values (adddate(19700101000000,interval 12-1 month));
insert into t3 values (adddate(19700101000000,interval 11-1 month));
insert into t3 values (adddate(19700101000000,interval 10-1 month));
insert into t3 values (adddate(19700101000000,interval 9-1 month));
insert into t3 values (adddate(19700101000000,interval 8-1 month));
insert into t3 values (adddate(19700101000000,interval 7-1 month));
insert into t3 values (adddate(19700101000000,interval 6-1 month));
insert into t3 values (adddate(19700101000000,interval 5-1 month));
insert into t3 values (adddate(19700101000000,interval 4-1 month));
insert into t3 values (adddate(19700101000000,interval 3-1 month));
insert into t3 values (adddate(19700101000000,interval 2-1 month));
insert into t3 values (adddate(19700101000000,interval 1-1 month));
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='MyISAM' 
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=MyISAM DEFAULT CHARSET=latin1
/*!50100 PARTITION BY LIST (month(a))
SUBPARTITION BY KEY (a)
SUBPARTITIONS 3
(PARTITION quarter1 VALUES IN (1,2,3) ENGINE = MyISAM,
 PARTITION quarter2 VALUES IN (4,5,6) ENGINE = MyISAM,
 PARTITION quarter3 VALUES IN (7,8,9) ENGINE = MyISAM,
 PARTITION quarter4 VALUES IN (10,11,12) ENGINE = MyISAM) */
12 inserts;
insert into t4 values (adddate(19700101000000,interval 12-1 month));
insert into t4 values (adddate(19700101000000,interval 11-1 month));
insert into t4 values (adddate(19700101000000,interval 10-1 month));
insert into t4 values (adddate(19700101000000,interval 9-1 month));
insert into t4 values (adddate(19700101000000,interval 8-1 month));
insert into t4 values (adddate(19700101000000,interval 7-1 month));
insert into t4 values (adddate(19700101000000,interval 6-1 month));
insert into t4 values (adddate(19700101000000,interval 5-1 month));
insert into t4 values (adddate(19700101000000,interval 4-1 month));
insert into t4 values (adddate(19700101000000,interval 3-1 month));
insert into t4 values (adddate(19700101000000,interval 2-1 month));
insert into t4 values (adddate(19700101000000,interval 1-1 month));
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='MyISAM' 
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=MyISAM DEFAULT CHARSET=latin1
/*!50100 PARTITION BY KEY (a)
(PARTITION pa1 MAX_ROWS = 20 MIN_ROWS = 2 ENGINE = MyISAM,
 PARTITION pa2 MAX_ROWS = 30 MIN_ROWS = 3 ENGINE = MyISAM,
 PARTITION pa3 MAX_ROWS = 30 MIN_ROWS = 4 ENGINE = MyISAM,
 PARTITION pa4 MAX_ROWS = 40 MIN_ROWS = 2 ENGINE = MyISAM) */
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='MyISAM' 
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=MyISAM DEFAULT CHARSET=latin1
/*!50100 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;