Open HuBlanker opened 5 years ago
http://huyan.couplecoders.tech/mysql/2019/04/18/Mysql%E7%9A%84-if%E5%92%8C-case%E8%AF%AD%E5%8F%A5/
http://huyan.couplecoders.tech/mysql/2019/04/18/Mysql%E7%9A%84-if%E5%92%8C-case%E8%AF%AD%E5%8F%A5/