摘要: delete from active where title not in(select top 3 * from active ) 阅读全文
posted @ 2015-03-31 08:02 914556495 阅读(142) 评论(0) 推荐(0) 编辑
摘要: select top 3 * from active 阅读全文
posted @ 2015-03-31 08:01 914556495 阅读(99) 评论(0) 推荐(0) 编辑
摘要: select count (*) from active 阅读全文
posted @ 2015-03-31 08:00 914556495 阅读(285) 评论(0) 推荐(0) 编辑