使用基于该行的值更新表中的所有行？

Question

I want to quickly update a table to get rid of any real data that got pulled down to a test server. 我想快速更新一个表，以摆脱任何被拉到测试服务器的真实数据。

UPDATE users SET email = CONCAT ("fake", users.id, "@mycompany.org")

Is anything like that possible or will I need to write a script? 这样的事情是可能的还是我需要写一个脚本？

Answer 1

Yes, the query you are using will work. 是的，您正在使用的查询将起作用。 That is, for a row like: 也就是说，对于像这样的行：

id = 21
name = 'sth'
email = NULL

It'll update and set the email to: 它会更新并将电子邮件设置为：

'fake21@mycompany.org'

And similarly for all the rows in the entire table. 对于整个表中的所有行也是如此。