摘要： 记得用MySQl的时候，就有一个语法Explain sql。 这样可以解析出sql执行的过程，并且给出如何使用索引。SQL server当然也有这样的功能，而且更加强大。When it comes time to analyze the performance of a specific query, one of the best methods is to view the query execution plan. A query execution plan outlines how the SQL Server query optimizer actually ran (or wil 阅读全文