MySQL数据库管理之怎么创建分区表

发布时间：2023-10-21 15:51:49 所属栏目：MySql教程来源：

导读：下面一起来了解下MySQL数据库管理之如何创建分区表，相信大家看完肯定会受益匪浅，文字在精不在多，希望MySQL数据库管理之如何创建分区表这篇短内容是你想要的。

下面一起来了解下MySQL数据库管理之如何创建分区表，相信大家看完肯定会受益匪浅，文字在精不在多，希望MySQL数据库管理之如何创建分区表这篇短内容是你想要的。

创建分区表

mysql> CREATE TABLE `LINEITEM` (

L_SHIPDATE DATE NULL,

L_ORDERKEY INT NOT NULL,

L_DISCOUNT DECIMAL(10,2) NOT NULL,

L_EXTENDEDPRICE DECIMAL(10,2) NOT NULL,

L_SUPPKEY INT NOT NULL,

L_QUANTITY INT NOT NULL,

L_RETURNFLAG CHAR(1) BINARY NULL,

L_PARTKEY INT NOT NULL,

L_LINESTATUS CHAR(1) BINARY NULL,

L_TAX DECIMAL(10,2) NOT NULL,

L_COMMITDATE DATE NULL,

L_RECEIPTDATE DATE NULL,

L_SHIPMODE CHAR(10) BINARY NULL,

L_LINENUMBER INT NOT NULL,

L_SHIPINSTRUCT CHAR(25) BINARY NULL,

L_COMMENT VARCHAR(44) BINARY NULL,

PRIMARY KEY (`L_ORDERKEY`, `L_LINENUMBER`,`L_SHIPDATE`)

) PARTITION BY RANGE COLUMNS (L_SHIPDATE) (

    PARTITION p0 VALUES LESS THAN ('1993-01-01'),

    PARTITION p1 VALUES LESS THAN ('1994-01-01'),

    PARTITION p2 VALUES LESS THAN ('1995-01-01'),

    PARTITION p3 VALUES LESS THAN ('1996-01-01'),

    PARTITION p4 VALUES LESS THAN ('1997-01-01'),

    PARTITION p5 VALUES LESS THAN ('1998-01-01'),

    PARTITION p6 VALUES LESS THAN ('1999-01-01'),

    PARTITION p7 VALUES LESS THAN (MAXVALUE)

)

删除

mysql> ALTER TABLE lineitem DROP PARTITION p7;

增加

mysql> ALTER TABLE lineitem ADD PARTITION (PARTITION p7 VALUES LESS THAN ('2000-01-01'));

拆分

mysql> ALTER TABLE lineitem

    REORGANIZE PARTITION p0 INTO (

        PARTITION p199206 VALUES LESS THAN ('1992-07-01'),

        PARTITION p199212 VALUES LESS THAN ('1993-01-01')

);

合并

mysql> ALTER TABLE lineitem REORGANIZE PARTITION p199206,p199212 INTO (

    PARTITION p0 VALUES LESS THAN ('1993-01-01')

);

交换分区

mysql> CREATE TABLE `temp1992` (

  `L_SHIPDATE` date NOT NULL DEFAULT '0000-00-00',

  `L_ORDERKEY` int(11) NOT NULL,

  `L_DISCOUNT` decimal(10,2) NOT NULL,

  `L_EXTENDEDPRICE` decimal(10,2) NOT NULL,

  `L_SUPPKEY` int(11) NOT NULL,

  `L_QUANTITY` int(11) NOT NULL,

  `L_RETURNFLAG` char(1) CHARACTER SET utf8 COLLATE utf8_bin DEFAULT NULL,

  `L_PARTKEY` int(11) NOT NULL,

  `L_LINESTATUS` char(1) CHARACTER SET utf8 COLLATE utf8_bin DEFAULT NULL,

  `L_TAX` decimal(10,2) NOT NULL,

  `L_COMMITDATE` date DEFAULT NULL,

  `L_RECEIPTDATE` date DEFAULT NULL,

  `L_SHIPMODE` char(10) CHARACTER SET utf8 COLLATE utf8_bin DEFAULT NULL,

  `L_LINENUMBER` int(11) NOT NULL,

  `L_SHIPINSTRUCT` char(25) CHARACTER SET utf8 COLLATE utf8_bin DEFAULT NULL,

  `L_COMMENT` varchar(44) CHARACTER SET utf8 COLLATE utf8_bin DEFAULT NULL,

  PRIMARY KEY (`L_ORDERKEY`,`L_LINENUMBER`,`L_SHIPDATE`)

) ENGINE=InnoDB DEFAULT CHARSET=utf8

mysql> ALTER TABLE lineitem EXCHANGE PARTITION p0 WITH TABLE temp1992;

Query OK, 0 rows affected (0.24 sec)

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