一般情況下，mysql會默認提供多種存儲引擎,可以通過下面的查看:
1）查看mysql是否安裝了innodb插件。
通過下面的命令結果可知，已經安裝了innodb插件。
| mysql> show plugins; +------------+--------+----------------+---------+---------+ | Name | Status | Type | Library | License | +------------+--------+----------------+---------+---------+ | binlog | ACTIVE | STORAGE ENGINE | NULL | GPL | | partition | ACTIVE | STORAGE ENGINE | NULL | GPL | | CSV | ACTIVE | STORAGE ENGINE | NULL | GPL | | MEMORY | ACTIVE | STORAGE ENGINE | NULL | GPL | | InnoDB | ACTIVE | STORAGE ENGINE | NULL | GPL | | MyISAM | ACTIVE | STORAGE ENGINE | NULL | GPL | | MRG_MYISAM | ACTIVE | STORAGE ENGINE | NULL | GPL | +------------+--------+----------------+---------+---------+ 7 rows in set (0.00 sec) |
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如果發現沒有安裝innodb插件,可以執行下面語句進行安裝：
mysql> install plugin innodb soname 'ha_innodb.so';
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2）查看mysql現在已提供什么存儲引擎:
| mysql> show engines; +------------+---------+------------------------------------------------------------+--------------+------+------------+ | Engine | Support | Comment | Transactions | XA | Savepoints | +------------+---------+------------------------------------------------------------+--------------+------+------------+ | MRG_MYISAM | YES | Collection of identical MyISAM tables | NO | NO | NO | | CSV | YES | CSV storage engine | NO | NO | NO | | MyISAM | DEFAULT | Default engine as of MySQL 3.23 with great performance | NO | NO | NO | | InnoDB | YES | Supports transactions, row-level locking, and foreign keys | YES | YES | YES | | MEMORY | YES | Hash based, stored in memory, useful for temporary tables | NO | NO | NO | +------------+---------+------------------------------------------------------------+--------------+------+------------+ 5 rows in set (0.00 sec) |
3）查看mysql當前默認的存儲引擎:
| mysql> show variables like '%storage_engine%'; +----------------+--------+ | Variable_name | Value | +----------------+--------+ | storage_engine | MyISAM | +----------------+--------+ 1 row in set (0.00 sec) |
4）看某個表用了什么引擎(在顯示結果里參數engine后面的就表示該表當前用的存儲引擎):
mysql> show create table 表名;
| mysql> show create table wx_share_log; +--------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ | Table | Create Table | +--------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ | wx_share_log | CREATE TABLE `wx_share_log` ( `id` int(11) NOT NULL AUTO_INCREMENT COMMENT '微信分享日志自增ID', `reference_id` int(11) NOT NULL COMMENT '推薦的經紀人id', `create_time` datetime NOT NULL COMMENT '創建時間', PRIMARY KEY (`id`) ) ENGINE=MyISAM AUTO_INCREMENT=13 DEFAULT CHARSET=utf8 | +--------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ 1 row in set (0.00 sec) |
