+-------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
1 row in set (0.00 sec)
如下命令：
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mysql> alter table wholesale engine=innodb; Query OK, 1 row affected (0.32 sec) Records: 1 Duplicates: 0 Warnings: 0
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mysql> show create table wholesale; +-------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ | Table | Create Table | +-------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ | jindong_wholesale | CREATE TABLE `wholesale` ( `act_id` mediumint(8) unsigned NOT NULL AUTO_INCREMENT, `goods_id` mediumint(8) unsigned NOT NULL, `goods_name` varchar(255) NOT NULL, `rank_ids` varchar(255) NOT NULL, `prices` text NOT NULL, `enabled` tinyint(3) unsigned NOT NULL, PRIMARY KEY (`act_id`), KEY `goods_id` (`goods_id`) USING BTREE ) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8 | +-------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ 1 row in set (0.00 sec)
多表改变引擎：
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# mysqldump -uroot -p123456 sx >sx_bak.sql sed -i "s/MyISAM/InnoDB/g" sx_bak.sql mysql -uroot -p123456 sx <sx_bak.sql
首先我目前平台上承载的大部分项目是读多写少的项目，而MyISAM的读性能是比Innodb强不少的。