SQL 话语合并
日期：2014-05-18 浏览次数：20496 次
SQL 语句合并
数据库SQL2000
以下两条语句，如何合并成一条：
请大家帮帮忙
------解决方案--------------------
数据库SQL2000
以下两条语句，如何合并成一条：
- SQL code
select qid,count(qid) as cis from test group by qid
- SQL code
select * from test as t1 where exists(select * from test as t2 where t1.QID=t2.ID) and t1.TID="&TID&"
请大家帮帮忙
------解决方案--------------------
- SQL code
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&"
------解决方案--------------------
貌似LZ的那两条select语句没有什么关联，为何要合并呢？
------解决方案--------------------
- SQL code
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
------解决方案--------------------
- SQL code
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&"
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