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109 lines
2.3 KiB
Text
109 lines
2.3 KiB
Text
create table t1 (a mediumint 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` mediumint(8) unsigned NOT NULL,
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PRIMARY KEY (`a`)
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) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_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 (16777215), (16777214), (16777213), (16777212), (1), (2), (65535);
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select * from t1;
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a
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1
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16777212
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16777213
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16777214
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16777215
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2
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65535
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select * from t1 where a=16777213;
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a
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16777213
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delete from t1 where a=16777213;
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select * from t1;
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a
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1
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16777212
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16777214
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16777215
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2
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65535
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drop table t1;
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create table t2 (a mediumint 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` mediumint(8) unsigned NOT NULL,
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PRIMARY KEY (`a`)
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) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci
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PARTITION BY KEY (`a`)
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PARTITIONS 8
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insert into t2 values (16777215), (16777214), (16777213), (16777212);
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select * from t2;
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a
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16777212
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16777213
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16777214
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16777215
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select * from t2 where a=16777213;
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a
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16777213
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delete from t2 where a=16777213;
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select * from t2;
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a
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16777212
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16777214
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16777215
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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 mediumint 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` mediumint(9) NOT NULL,
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PRIMARY KEY (`a`)
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) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci
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PARTITION BY KEY (`a`)
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PARTITIONS 7
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insert into t3 values (8388607), (8388606), (8388605), (8388604), (-8388608), (-8388607), (1), (-1), (0);
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select * from t3;
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a
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-1
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-8388607
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-8388608
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0
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1
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8388604
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8388605
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8388606
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8388607
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select * from t3 where a=8388605;
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a
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8388605
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delete from t3 where a=8388605;
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select * from t3;
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a
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-1
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-8388607
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-8388608
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0
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1
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8388604
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8388606
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8388607
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drop table t3;
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