問題描述

想實現當b.phase>2就執行拼接條件:AND unix_timestamp()> second_end_time否則拼接條件:AND unix_timestamp()> thirdly_end_time 的語句 求教各位應如何編寫該SQL?

SELECT * FROM data a, race bWHEREa.race_id = b.race_idIF (b.phase > 2, AND unix_timestamp()> second_end_time , AND unix_timestamp()> thirdly_end_time)AND user_id = 123以上為自己亂寫,語法并不對,求指點!

問題解答

SELECT * FROM data a,race b WHERE a.race_id=b.race_id AND ((b.phase>2 AND UNIX_TIMESTAMP()>second_end_time) OR (b.phase<=2 AND UNIX_TIMESTAMP()>thirdly_end_time));