SQL 语句合并
数据库SQL2000
以下两条语句,如何合并成一条:
select qid,count(qid) as cis from test group by qid
select * from test as t1 where exists(select * from test as t2 where t1.QID=t2.ID) and t1.TID="&TID&"
select *,(select count(*) from test where qid=t1.qid)from test as t1 where exists(select * from test as t2 where t1.QID=t2.ID) and t1.TID="&TID&"
[解决办法]
貌似LZ的那两条select语句没有什么关联,为何要合并呢?
[解决办法]
select qid,count(qid) as cis from (select * from test as t1 where exists(select * from test as t2 where t1.QID=t2.ID) and t1.TID="&TID&") z group by qid
[解决办法]
select *, (select count(*) from test where qid=t1.qid) from test as t1 where exists (select * from test as t2 where t1.QID=t2.ID) and t1.TID="&TID&"