摘要: 记录下SQL笔记,久了没用忘掉了,咳,真TMD郁闷 分组后WHERE用having SELECT FAge,COUNT(*) AS CountOfThisAge FROM T_Employee GROUP BY FAge HAVING COUNT (*) IN (1,3) Group by 按需求取 阅读全文
posted @ 2010-08-22 01:25 liushan 阅读(372) 评论(0) 推荐(1)