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HomeDatabaseMysql TutorialMYSQL 批量替换之replace语法的使用详解

MYSQL 批量替换之replace语法的使用详解

Jun 07, 2016 pm 04:17 PM
mysqlreplaceusebatchreplaceDetailed explanationgrammar

实际需求中,需要对某张表某字段里面的内容进行批量替换,普通的思考流程如下: SELECT出来 str_replace替换 UPDATE写入 实际这样极其浪费资源以及消耗资源,MYSQL内置了一个批量替换的语法 复制代码 代码如下: UPDATE table SET field = replace(field,'被

实际需求中,需要对某张表某字段里面的内容进行批量替换,普通的思考流程如下:
SELECT出来
str_replace替换
UPDATE写入
实际这样极其浪费资源以及消耗资源,MYSQL内置了一个批量替换的语法

复制代码 代码如下:


UPDATE table SET field = replace(field,'被替换','替换成') 


直接就替换了,后面也可以跟WHERE 条件语句
支持多个词同时被替换

复制代码 代码如下:


UPDATE table SET field = replace(field,'被替换1','替换成1'),field = replace(field,'被替换2','替换成2') 


很强大吧,,后面那个一次性更换多个网上是没有的列子,现在记录下来
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