Shulou(Shulou.com)05/31 Report--

In this issue, the editor will bring you some data about how to replace a field in batches in Mysql. The article is rich in content and analyzed and described from a professional point of view. I hope you can get something after reading this article.

1. Modify all the text in the field that contains the specified string

UPDATE Table A SET field B = replace (field B, 'aaa',' bbb') example: update table set url= replace (url,' aaa', 'bbb') [change the aaa batch in the url field to bbb] update table set url= REPLACE (url,'3','1.png') where condition

two。 General condition modification:

Update table set column='' where column is null column: update `table` set `url` ='0' where `url` is null

Additional knowledge: mysql replaces parts of a field in batches

Give examples to illustrate

There is a data table person, which is structured as follows

Idnameurls1 Zhang San xh.jpg2 Li Si xh.jpg3 Wang Wu 3.jpg

Requirement: replace the xh in the urls field with the value of the id field

Statement:

UPDATE person SET urls = (REPLACE (urls,'xh',id))

Execution result:

Idnameurls1 Zhang San 1.jpg2 Li Si 2.jpg3 Wang Wu 3.jpg above is part of the data about how to replace a field in batch in Mysql shared by Xiaobian. If you happen to have similar doubts, please refer to the above analysis to understand. If you want to know more about it, you are welcome to follow the industry information channel.

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