optimize table出错解决方法

小鱼庄味嚼私厨

一个某某库大概360W,为了提高查询效率，做点优化，使用optimize table table.name;出现Table does not support optimize, doing recreate + analyze instead 
果断谷歌，查到一段E文。。。 

Everytime you do optimize MySQL, by using mysqlcheck -A -o or using ./mysql_optimize from here. 
You may see the output 

Table does not support optimize, doing recreate + analyze instead. 

It is because the table that you are using is InnoDB. 

You can optimize the InnoDB tables by using this. 

复制代码

代码如下:

ALTER TABLE table.name ENGINE='InnoDB'; 

This will create a copy of the original table, and drop the original table, and replace to the original place. 

Although this is safe, but I suggest you do backup and test first before doing this. 

原来如此，大致意思是说innodb的数据库不支持optimize，可以用 
ALTER TABLE table.name ENGINE='InnoDB'; 
该方法会对旧表以复制的方式新建一个新表，然后删除旧表。虽然这个过程是安全的，但是在进行操作时还是先进行备份为好 

还有一种方式： 

You can make OPTIMIZE TABLE work on other storage engines by starting mysqld with the --skip-new or --safe-mode option. In this case, OPTIMIZE TABLE is just mapped toALTER TABLE. 

上面是说要求我们在启动的时候指定--skip-new或者--safe-mode选项来支持optimize功能