选择不存在

Question

此表名为category

我想选择Sid = 3和Bid = 0且不与Sid = 3和Bid = 8重复的记录

（我想选择图片中的红色记录）

http://img27.imageshack.us/img27/8127/6opr.jpg

Answer 1

你可以像这样使用subquery：

SELECT * FROM Category WHERE Sid = 3 AND Bid = 0 
AND Name NOT IN (SELECT Name FROM Category WHERE Sid = 3 AND Bid = 8)