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一个SQL Tuning例子

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8 Responses to “一个SQL Tuning例子”

  1. 路人 Says:

    没弄明白,能不能解释一下,以前没见过这个案例,谢谢。

  2. roger Says:

    to 路人:

    看下这个就明白了:

  3. francis Says:

    真旭,这个问题还真是麻烦你了啊,我向你表示歉意啊

  4. roger Says:

    to francis: 没事,都是同事嘛!

  5. jump2009 Says:

    为什么写成CELL_PH_NUM like ‘13912345678’,一般直接写成CELL_PH_NUM = ‘13912345678’ 要like后面一般都加’%’

  6. roger Says:

    to jump2009:

    这个是应用里面的sql,写法是固定的,程序产生的语句!

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