目录前言准备复合索引覆盖索引总结前言准备 我们先准备一张表和几个字段，方便介绍覆盖索引和复合索引。
I\'m trying to make sense on the best way to do automatize a series of things in a row in order to deploy a web-app and haven\'t yet came up with a s开发者_开发问答uitable solution. I would like to:
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