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109 lines
2.2 KiB
Text
109 lines
2.2 KiB
Text
create table t1 (a smallint unsigned not null, primary key(a)) engine='MYISAM'
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partition by key (a) (
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partition pa1 max_rows=20 min_rows=2,
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partition pa2 max_rows=30 min_rows=3,
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partition pa3 max_rows=30 min_rows=4,
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partition pa4 max_rows=40 min_rows=2);
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show create table t1;
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Table Create Table
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t1 CREATE TABLE `t1` (
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`a` smallint(5) unsigned NOT NULL,
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PRIMARY KEY (`a`)
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) ENGINE=MyISAM DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci
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PARTITION BY KEY (`a`)
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(PARTITION `pa1` MAX_ROWS = 20 MIN_ROWS = 2 ENGINE = MyISAM,
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PARTITION `pa2` MAX_ROWS = 30 MIN_ROWS = 3 ENGINE = MyISAM,
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PARTITION `pa3` MAX_ROWS = 30 MIN_ROWS = 4 ENGINE = MyISAM,
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PARTITION `pa4` MAX_ROWS = 40 MIN_ROWS = 2 ENGINE = MyISAM)
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insert into t1 values (65535), (65534), (65533), (65532), (1), (2), (256);
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select * from t1;
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a
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1
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2
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256
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65532
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65533
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65534
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65535
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select * from t1 where a=65533;
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a
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65533
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delete from t1 where a=65533;
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select * from t1;
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a
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1
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2
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256
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65532
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65534
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65535
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drop table t1;
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create table t2 (a smallint unsigned not null, primary key(a)) engine='MYISAM'
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partition by key (a) partitions 8;
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show create table t2;
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Table Create Table
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t2 CREATE TABLE `t2` (
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`a` smallint(5) unsigned NOT NULL,
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PRIMARY KEY (`a`)
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) ENGINE=MyISAM DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci
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PARTITION BY KEY (`a`)
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PARTITIONS 8
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insert into t2 values (65535), (65534), (65533), (65532);
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select * from t2;
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a
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65532
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65533
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65534
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65535
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select * from t2 where a=65533;
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a
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65533
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delete from t2 where a=65533;
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select * from t2;
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a
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65532
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65534
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65535
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delete from t2;
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65535 inserts;
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select count(*) from t2;
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count(*)
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65535
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drop table t2;
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create table t3 (a smallint not null, primary key(a)) engine='MYISAM'
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partition by key (a) partitions 7;
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show create table t3;
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Table Create Table
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t3 CREATE TABLE `t3` (
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`a` smallint(6) NOT NULL,
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PRIMARY KEY (`a`)
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) ENGINE=MyISAM DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci
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PARTITION BY KEY (`a`)
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PARTITIONS 7
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insert into t3 values (32767), (32766), (32765), (32764), (-32768), (-32767), (1), (-1), (0);
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select * from t3;
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a
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-1
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-32767
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-32768
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0
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1
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32764
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32765
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32766
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32767
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select * from t3 where a=32765;
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a
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32765
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delete from t3 where a=32765;
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select * from t3;
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a
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-1
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-32767
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-32768
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0
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1
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32764
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32766
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32767
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drop table t3;
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