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119 lines
3.1 KiB
Text
119 lines
3.1 KiB
Text
drop table if exists t1;
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CREATE TABLE t1 (
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a int not null,
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b int not null,
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c int not null,
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primary key(a,b),
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index (a))
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engine = ndb
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partition by range (a)
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partitions 3
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(partition x1 values less than (5),
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partition x2 values less than (10),
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partition x3 values less than (20));
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INSERT into t1 values (1, 1, 1);
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INSERT into t1 values (6, 1, 1);
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INSERT into t1 values (10, 1, 1);
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INSERT into t1 values (15, 1, 1);
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select * from information_schema.partitions where table_name= 't1';
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TABLE_CATALOG TABLE_SCHEMA TABLE_NAME PARTITION_NAME SUBPARTITION_NAME PARTITION_ORDINAL_POSITION SUBPARTITION_ORDINAL_POSITION PARTITION_METHOD SUBPARTITION_METHOD PARTITION_EXPRESSION SUBPARTITION_EXPRESSION PARTITION_DESCRIPTION TABLE_ROWS AVG_ROW_LENGTH DATA_LENGTH MAX_DATA_LENGTH INDEX_LENGTH DATA_FREE CREATE_TIME UPDATE_TIME CHECK_TIME CHECKSUM PARTITION_COMMENT NODEGROUP TABLESPACE_NAME
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NULL test t1 x1 NULL 1 NULL RANGE NULL a NULL 5 0 0 0 # 0 0 # # NULL NULL default 0 default
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NULL test t1 x2 NULL 2 NULL RANGE NULL a NULL 10 0 0 0 # 0 0 # # NULL NULL default 0 default
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NULL test t1 x3 NULL 3 NULL RANGE NULL a NULL 20 0 0 0 # 0 0 # # NULL NULL default 0 default
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select * from t1 order by a;
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a b c
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1 1 1
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6 1 1
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10 1 1
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15 1 1
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select * from t1 where a=1 order by a;
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a b c
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1 1 1
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select * from t1 where a=15 and b=1 order by a;
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a b c
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15 1 1
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select * from t1 where a=21 and b=1 order by a;
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a b c
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select * from t1 where a=21 order by a;
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a b c
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select * from t1 where a in (1,6,10,21) order by a;
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a b c
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1 1 1
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6 1 1
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10 1 1
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select * from t1 where b=1 and a in (1,6,10,21) order by a;
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a b c
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1 1 1
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6 1 1
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10 1 1
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drop table t1;
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CREATE TABLE t1 (
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a int not null,
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b int not null,
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c int not null,
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primary key(b),
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unique (a))
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engine = ndb
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partition by range (b)
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partitions 3
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(partition x1 values less than (5),
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partition x2 values less than (10),
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partition x3 values less than (20));
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INSERT into t1 values (1, 1, 1);
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INSERT into t1 values (2, 6, 1);
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INSERT into t1 values (3, 10, 1);
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INSERT into t1 values (4, 15, 1);
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select * from t1 order by a;
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a b c
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1 1 1
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2 6 1
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3 10 1
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4 15 1
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UPDATE t1 set a = 5 WHERE b = 15;
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select * from t1 order by a;
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a b c
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1 1 1
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2 6 1
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3 10 1
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5 15 1
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UPDATE t1 set a = 6 WHERE a = 5;
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select * from t1 order by a;
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a b c
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1 1 1
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2 6 1
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3 10 1
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6 15 1
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select * from t1 where b=1 order by b;
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a b c
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1 1 1
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select * from t1 where b=15 and a=1 order by b;
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a b c
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select * from t1 where b=21 and a=1 order by b;
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a b c
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select * from t1 where b=21 order by b;
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a b c
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select * from t1 where b in (1,6,10,21) order by b;
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a b c
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1 1 1
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2 6 1
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3 10 1
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select * from t1 where a in (1,2,5,6) order by b;
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a b c
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1 1 1
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2 6 1
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6 15 1
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select * from t1 where a=1 and b in (1,6,10,21) order by b;
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a b c
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1 1 1
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DELETE from t1 WHERE b = 6;
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DELETE from t1 WHERE a = 6;
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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` int(11) NOT NULL,
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`b` int(11) NOT NULL,
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`c` int(11) NOT NULL,
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PRIMARY KEY (`b`),
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UNIQUE KEY `a` (`a`)
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) ENGINE=ndbcluster DEFAULT CHARSET=latin1 PARTITION BY RANGE (b) (PARTITION x1 VALUES LESS THAN (5) ENGINE = ndbcluster, PARTITION x2 VALUES LESS THAN (10) ENGINE = ndbcluster, PARTITION x3 VALUES LESS THAN (20) ENGINE = ndbcluster)
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drop table t1;
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