怎样查看mysql中表的存储引擎类型
查看mysql中表的存储引擎类型的办法:1、运用【show table status from 数据库库名 where name='表名'】;2、查看mysql办事器可否启用InnoDB存储引擎。
查看mysql中表的存储引擎类型的办法:
1.show table status from 数据库库名 where name='表名',例:
mysql> SHOW TABLE STATUS from mytest where Name='test'; +------------+--------+---------+------------+------+----------------+-------------+(省去局部效果) | Name | Engine | Version | Row_format | Rows | Avg_row_length | Data_length |(省去局部效果) +------------+--------+---------+------------+------+----------------+-------------+(省去局部效果) | test | MyISAM | 10 | Fixed | 0 | 0 | 0 |(省去局部效果) +------------+--------+---------+------------+------+----------------+-------------+(省去局部效果) 1 row in set (0.02 sec) mysql>
看到Engine对应的值是MyISAM
2.mysqlshow -u 数据库登录账号会员名 -p'数据库登录账号密码' --status 数据库库名 表名
mysqlshow -uroot -p'mypassword' --status mytest test Database:mytest Wildcard: test +------------+--------+---------+------------+------+----------------+-------------+(省去局部效果) | Name | Engine | Version | Row_format | Rows | Avg_row_length | Data_length |(省去局部效果) +------------+--------+---------+------------+------+----------------+-------------+(省去局部效果) | test | MyISAM | 10 | Fixed | 0 | 0 | 0 |(省去局部效果) +------------+--------+---------+------------+------+----------------+-------------+(省去局部效果)
可以看到Engine对应的值是MyISAM
3.show create table 表名
这种办法有时候是不正确的,例:
办事器配置没有启用InnoDB存储引擎,在新建表的时候设定的是InnoDB存储引擎,新建表时的下令:
mysql> create database mytest; Query OK, 1 row affected (0.02 sec) mysql> use mytest; Database changed mysql> CREATE TABLE test ( -> id INT(11) default NULL auto_increment, -> s char(60) default NULL, -> PRIMARY KEY (id) -> ) ENGINE=InnoDB; Query OK, 0 rows affected, 2 warnings (0.06 sec) mysql>
此时运用上面的办法1和2查看会看到test表运用的引擎是MyISAM,但是运用3查看会看到如上的效果。而现实上test表运用的存储引擎是MyISAM的。
4.查看mysql办事器可否启用InnoDB存储引擎:
返回效果是: "InnoDB" 对应的 "Support"等于 “NO” ,表示未启用 InnoDB 存储引擎。
mysql> SHOW ENGINES; +------------+---------+----------------------------------------------------------+(省去局部效果) | Engine | Support | Comment |(省去局部效果) +------------+---------+----------------------------------------------------------+(省去局部效果) | InnoDB | NO | Supports transactions, row-level locking, and foreign keys|(省去局部效果) | MRG_MYISAM | YES | Collection of identical MyISAM tables |(省去局部效果) | BLACKHOLE | YES | /dev/null storage engine (anything you write to it disa(省去局部效果) | CSV | YES | CSV storage engine |(省去局部效果) | MEMORY | YES | Hash based, stored in memory, useful for temporary tables|(省去局部效果) | FEDERATED | NO | Federated MySQL storage engine |(省去局部效果) | ARCHIVE | YES | Archive storage engine |(省去局部效果) | MyISAM | DEFAULT | Default engine as of MySQL 3.23 with great performance|(省去局部效果) +------------+---------+----------------------------------------------------------+(省去局部效果) 8 rows in set (0.00 sec) mysql>
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