MySQL5.6即将发布,5.6对优化器方面做了诸多优化。我这次主要解释MRR(MULTI-RANGE-READ)。我用存储过程解释了这一过程的改变。大家细心体会去吧。我们针对语句
MySQL 5.6 即将发布,虚拟主机, 5.6对优化器方面做了诸多优化。 我这次主要解释MRR(MULTI-RANGE-READ)。
我用存储过程解释了这一过程的改变。大家细心体会去吧。
我们针对语句:
表结构为:
首先是MySQL 5.5.
下来是MySQL 5.6.
本文出自 “上帝,咱们不见不散!” 博客,香港虚拟主机,请务必保留此出处
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