新人求教MySQL关于判断后拼接条件进行查询的sql语句

问题描述

问 题

想实现当b.phase>2就执行拼接条件:AND unix_timestamp()> second_end_time
否则拼接条件:AND unix_timestamp()> thirdly_end_time 的语句
求教各位应如何编写该SQL?

SELECT * FROM data a, race b
WHERE
a.race_id = b.race_id
IF (b.phase > 2, AND unix_timestamp()> second_end_time , AND unix_timestamp()> thirdly_end_time)
AND user_id = 123
以上为自己乱写,语法并不对,求指点!

解决方案

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));

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