SELECT * FROM A WHERE CC IN 子查询的问题！
现有一个查询 SELECT A FROM AA WHERE CC=1; 得到的结果是 200,300,400可是我在用 SELECT B FROM BB WHERE TB IN (SELECT A FROM AA WHERE CC=1); 时却无法得到数据，请问应如何处理？？？？
2010-05-14 12:31
2010-05-14 12:37
2010-05-14 14:13
2010-12-10 21:30
