本文介绍了CTE 中的 CTE的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
是否可以在 CTE 中编写 CTE?
Is it possible to write a CTE within a CTE?
我希望它遵循这个逻辑，但解释器不喜欢这段代码.
I want it to follow this logic, but the interpreter doesn't like this code.
with outertest as(
with test as (
select
SRnum,
gamenumber,
StartOfDistribution,
ApplicationNumber
from #main
where startofdistribution = '2011-06-14 00:00:00.000'
and SRnum = '313'
--order by SRnum, gamenumber, StartOfDistribution, ApplicationNumber
)
select
ApplicationNumber
,count(*) as RetailerAppearance
from test
group by ApplicationNumber
having count(*) = 4
) select count(*) from outertest
推荐答案
您不能在 SQL Server 中嵌套这样的 CTE，但您可以通过以下方式使用多个 CTE:
You can't nest CTEs like that in SQL Server but you can use multiple CTEs the following way:
;with test as
(
select
SRnum,
gamenumber,
StartOfDistribution,
ApplicationNumber
from #main
where startofdistribution = '2011-06-14 00:00:00.000'
and SRnum = '313'
--order by SRnum, gamenumber, StartOfDistribution, ApplicationNumber
),
outertest as
(
select
ApplicationNumber
,count(*) as RetailerAppearance
from test
group by ApplicationNumber
having count(*) = 4
)
select count(*)
from outertest
这篇关于CTE 中的 CTE的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持编程学习网！
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