摘要: update t_topic t set t.follow_time=case when (if(isNull(t.follow_time),0,t.follow_time)-1)<0 then 0 else (if(isNull(t.follow_time),0,t.follow_time)-1) 阅读全文
posted @ 2016-08-03 15:07 木木高 阅读(483) 评论(0) 推荐(0)