我有两个Query,Query1:
with cte as (
select
dbo.Cable.*,
row_number() over(partition by dbo.Cable.TagNo order by dbo.Cable.CableRevision desc) as rn
from dbo.Cable
where (dbo.Cable.CableRevision = @CoreRevision )
)
select *
from cte
where rn = 1
以及Query2
with cte as (
select
dbo.Cable.TagNo,dbo.Core.*,
row_number() over(partition by dbo.Core.CoreNo order by dbo.Core.CoreRevision desc) as rn
from dbo.Core INNER JOIN
dbo.Cable ON dbo.Cable.Id = dbo.Core.CableId
where (dbo.Core.CoreRevision <= @CoreRevision )
)
select *
from cte
where rn = 1
这两个查询与Query1.TagNo
和Query2.TagNo
相关联
我如何使用加入这两个查询,是否可以使用With
命令执行此操作?
谢谢
答案 0 :(得分:17)
尝试此查询,也许这就是您要找的内容。
;WITH cte AS
(SELECT dbo.Cable.*,
row_number() over(partition by dbo.Cable.TagNo order by dbo.Cable.CableRevision desc) as rn
FROM dbo.Cable
WHERE dbo.Cable.CableRevision = @CoreRevision
), cte2 AS
(SELECT dbo.Cable.TagNo, dbo.Core.*,
row_number() over(partition by dbo.Core.CoreNo order by dbo.Core.CoreRevision desc) as rn
FROM dbo.Core INNER JOIN dbo.Cable ON dbo.Cable.Id = dbo.Core.CableId
WHERE dbo.Core.CoreRevision <= @CoreRevision
)
SELECT *
FROM cte c FULL JOIN cte2 c2 ON c.TagNo = c2.TagNo
WHERE c.rn = 1 OR c2.rn = 1
答案 1 :(得分:5)
with cte as
(
select
dbo.Cable.*,
row_number() over(partition by dbo.Cable.TagNo order by dbo.Cable.CableRevision desc) as rn
from dbo.Cable
where (dbo.Cable.CableRevision = @CoreRevision )
),
cte2 as (
select
dbo.Cable.TagNo,dbo.Core.*,
row_number() over(partition by dbo.Core.CoreNo order by dbo.Core.CoreRevision desc) as rn
from dbo.Core INNER JOIN
dbo.Cable ON dbo.Cable.Id = dbo.Core.CableId
where (dbo.Core.CoreRevision <= @CoreRevision )
)
select *
from cte
join cte2 on cte1.TagNo = cte2.TagNo
where cte.rn = 1 and cte2.rn = 1;
我不知道条件cte.rn = 1 and cte2.rn = 1
是否符合您的要求。也许你只想在其中一个CTE上,也许在两者上,也许你真的想要在连接条件下使用cte2.rn = 1
进行外连接......