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[转]MySQL不为人知的主键与唯一索引约束
今天和大家简单聊聊MySQL的约束主键与唯一索引约束： PRIMARY KEY and UNIQUE Index Constraints 文章不长，保证有收获。
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epan says:抢购场景下，一般限定一个人一台，结合业务来实现。 -
biguoyong says:
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Just One Pure ITer
今天和大家简单聊聊MySQL的约束主键与唯一索引约束： PRIMARY KEY and UNIQUE Index Constraints 文章不长，保证有收获。
第一篇，说说MySQL两个最常用的存储引擎，MyISAM和InnoDB。照自己的理解，把一些知识点总结出来，不只说知识点，多讲“为什么”。
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