mysql update正则替换sql语句 有需要的朋友可参考一下。
下面的update语句执行的是把www.test.com中的test替换为abc
UPDATE 表名 SET 字段名= REPLACE( 替换前的字段值, '替换前关键字', '替换后关键字' ) WHERE 字段名 REGEXP "替换前的字段值";
例句:
代码如下 | 复制代码 |
UPDATE test SET url= REPLACE('www.test.com','test', 'abc' ) WHERE url REGEXP "www.test.com"; |
如果在记录中,有类似
www.test.com
www.test1.com
www.test2.com
要将这些记录都变成www.abc.com则执行sql语句如下
代码如下 | 复制代码 |
UPDATE test SET |
正则是非常灵活的,但是有非常复杂的情况,正则的效率不一定高于其他的方法,不一定要死抱着一颗树,有时候尝试新的方法或许会学到更多的东西。

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