摘要: 优化sql,原sql: select distinct q.* from aws_question q inner join aws_topic_question tq on ( tq.topic_id=12564 or tq.topic_id=4558 or tq.topic_id=934 ) a 阅读全文
posted @ 2017-06-08 16:26 素还真1990 阅读(3430) 评论(0) 推荐(0)