select c.*,b.* from (select '1',xm,sum(gh) as gh from a where a.id='1' group by xm ) c , b where c.id=b.id
select a.*,b.xx from a,b where a.id=b.id and a.id='1'
select a.id,a.xm,a.gh,b.xx from a,b where a.id=b.id and a.id='1'
select a.id,a.xm,a.gh from a join select b.xx from b on a.id = b.id where a.id = '1'
select * from a where a.id='1' union select xx from b where b.id='1'
select * from we_project where recid='2003031313213751769656'(一条) select * from is_files where doc_id='2003031313213751769656'(两条) select distinct a.*,b.file_name from we_project a,is_files b where a.recid=b.doc_id and a.recid='2003031313213751769656'(两条!我想的到一条) select * from we_project where recid='2003031313213751769656' union select * from is_files where doc_id='2003031313213751769656'(报错了!!包含 UNION 运算符的 SQL 语句中的所有查询都必须在目标列表中具有相同数目的表达式。)
当select * from is_files where doc_id='2003031313213751769656'没有记录时也要的到一条is_files中的file_name显示为null,有人会吗!救命啊!
try: select identity(1,1) as temp_id,a.*,b.xx into #temp from a,b where a.id=b.id select (select max(b.temp_id) from #temp b where a.id=b.id) as temp_id,a.id,a.字段1,a.字段2,..... from #temp
from (select '1',xm,sum(gh) as gh from a where a.id='1' group by xm ) c , b where
c.id=b.id
where a.id = '1'
select xx from b where b.id='1'
select * from is_files where doc_id='2003031313213751769656'(两条)
select distinct a.*,b.file_name from we_project a,is_files b where a.recid=b.doc_id and a.recid='2003031313213751769656'(两条!我想的到一条)
select * from we_project where recid='2003031313213751769656' union select * from is_files where doc_id='2003031313213751769656'(报错了!!包含 UNION 运算符的 SQL 语句中的所有查询都必须在目标列表中具有相同数目的表达式。)
select identity(1,1) as temp_id,a.*,b.xx into #temp from a,b where a.id=b.id
select (select max(b.temp_id) from #temp b where a.id=b.id) as temp_id,a.id,a.字段1,a.字段2,..... from #temp