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问题描述
我环顾四周，发现一些MySQL引擎是innodb和MyISAM。也许还有更少的。我的问题是这些数据库引擎是什么？
I looked around and found some of the MySQL engines are innodb and MyISAM. Perhaps there are few more. My question is what are these database engines?
不同的MySQL引擎之间有什么区别？更重要的是，我如何决定使用哪一个？
What are the differences between different MySQL engines? And more importantly, How do I decide which one to use?
推荐答案
mysql> SHOW ENGINES;
+------------+---------+----------------------------------------------------------------+--------------+------+------------+
| Engine | Support | Comment | Transactions | XA | Savepoints |
+------------+---------+----------------------------------------------------------------+--------------+------+------------+
| InnoDB | YES | Supports transactions, row-level locking, and foreign keys | YES | YES | YES |
| MRG_MYISAM | YES | Collection of identical MyISAM tables | NO | NO | NO |
| BLACKHOLE | YES | /dev/null storage engine (anything you write to it disappears) | NO | NO | NO |
| CSV | YES | CSV storage engine | NO | NO | NO |
| MEMORY | YES | Hash based, stored in memory, useful for temporary tables | NO | NO | NO |
| FEDERATED | NO | Federated MySQL storage engine | NULL | NULL | NULL |
| ARCHIVE | YES | Archive storage engine | NO | NO | NO |
| MyISAM | DEFAULT | Default engine as of MySQL 3.23 with great performance | NO | NO | NO |
+------------+---------+----------------------------------------------------------------+--------------+------+------------+
我个人总是使用InnoDB，如果我必须使用MySQL。它支持事务和外键，而MyISAM不支持。
I personally always use InnoDB if I have to use MySQL. It supports transaction and foreign keys while MyISAM doesn't.
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