MySQL不同存储引擎和不同分区字段对于查询的影响
前提：每种表类型准备了200万条相同的数据。
表一 InnoDB & PARTITION BY RANGE (id)
Sql代码 www.2cto.com
CREATE TABLE `customer_innodb_id` (
`id` int(11) NOT NULL,
`email` varchar(64) NOT NULL,
`name` varchar(32) NOT NULL,
`password` varchar(32) NOT NULL,
`phone` varchar(13) DEFAULT NULL,
`birth` date DEFAULT NULL,
`sex` int(1) DEFAULT NULL,
`avatar` blob,
`address` varchar(64) DEFAULT NULL,
`regtime` datetime DEFAULT NULL,
`lastip` varchar(15) DEFAULT NULL,
`modifytime` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8
/*!50100 PARTITION BY RANGE (id)
(PARTITION p0 VALUES LESS THAN (100000) ENGINE = InnoDB,
PARTITION p1 VALUES LESS THAN (500000) ENGINE = InnoDB,
PARTITION p2 VALUES LESS THAN (1000000) ENGINE = InnoDB,
PARTITION p3 VALUES LESS THAN (1500000) ENGINE = InnoDB,
PARTITION p4 VALUES LESS THAN (2000000) ENGINE = InnoDB,
PARTITION p5 VALUES LESS THAN MAXVALUE ENGINE = InnoDB) */;
查询结果： www.2cto.com
Sql代码
mysql> select count(*) from customer_innodb_id where id > 50000 and id < 500000;
+----------+
| count(*) |
+----------+
| 449999 |
+----------+
1 row in set (1.19 sec)
mysql> select count(*) from customer_innodb_id where id > 50000 and id < 500000;
+----------+
| count(*) |
+----------+
| 449999 |
+----------+
1 row in set (0.28 sec)
mysql> select count(*) from customer_innodb_id where regtime > '1995-01-01 00:00
:00' and regtime < '1996-01-01 00:00:00';
+----------+
| count(*) |
+----------+
| 199349 |
+----------+
1 row in set (4.74 sec)
mysql> select count(*) from customer_innodb_id where regtime > '1995-01-01 00:00
:00' and regtime < '1996-01-01 00:00:00';
+----------+
| count(*) |
+----------+
| 199349 |
+----------+
1 row in set (5.28 sec)
表二 InnoDB & PARTITION BY RANGE (year)
Sql代码
CREATE TABLE `customer_innodb_year` (
`id` int(11) NOT NULL,
`email` varchar(64) NOT NULL,
`name` varchar(32) NOT NULL,
`password` varchar(32) NOT NULL,
`phone` varchar(13) DEFAULT NULL,
`birth` date DEFAULT NULL,
`sex` int(1) DEFAULT NULL,
`avatar` blob,
`address` varchar(64) DEFAULT NULL,
`regtime` datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
`lastip` varchar(15) DEFAULT NULL,
`modifytime` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
PRIMARY KEY (`id`,`regtime`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8
/*!50100 PARTITION BY RANGE (YEAR(regtime ))
(PARTITION p0 VALUES LESS THAN (1996) ENGINE = InnoDB,
PARTITION p1 VALUES LESS THAN (1997) ENGINE = InnoDB,
PARTITION p2 VALUES LESS THAN (1998) ENGINE = InnoDB,
PARTITION p3 VALUES LESS THAN (1999) ENGINE = InnoDB,
PARTITION p4 VALUES LESS THAN (2000) ENGINE = InnoDB,
PARTITION p5 VALUES LESS THAN (2001) ENGINE = InnoDB,
PARTITION p6 VALUES LESS THAN (2002) ENGINE = InnoDB,
PARTITION p7 VALUES LESS THAN (2003) ENGINE = InnoDB,
PARTITION p8 VALUES LESS THAN (2004) ENGINE = InnoDB,
PARTITION p9 VALUES LESS THAN (2005) ENGINE = InnoDB,
PARTITION p10 VALUES LESS THAN (2006) ENGINE = InnoDB,
PARTITION p11 VALUES LESS THAN (2007) ENGINE = InnoDB,
PARTITION p12 VALUES LESS THAN (2