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文章 2023-01-08 来自：开发者社区

如果执行这条更新语句数据库是如何执行的呢？update Student set name='小明' where StudentID=1根据之前说过的SQL语句查询的流程来说，只要表上有数据更新，有关查询的索引就会失效，接下来分析器会根据每个单词识别知道这是Update语句，优化器根据这个ID获取需要的索引，然后执行器执行这一行，进行更新。先说里面有一个重要的内容就是：redo log（重做日...

问答 2022-09-08 来自：开发者社区

SQL 语句的执行过程是怎么样的？

问答 2022-05-08 来自：开发者社区

SQL语句在执行过程中，需要经过哪些步骤？

文章 2017-11-21 来自：开发者社区

SQL语句的执行过程

1.语法校验如果在SQL计划缓存中没有对应的执行计划，服务器首先会对用户请求的SQL语句进行语法效验，如果有语法错误，服务器会结束查询操作，并用返回相应的错误信息给调用它的应用程序。注意：此时返回的错误信息中，只会包含基本的语法错误信息，例如select 写成selec等，错误信息中如果包含一列表中本没有的列，此时服务器是不会检查出来的，因为...

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更新时间 2023-01-12 00:37:40

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