SQL Union All 查询的语法不正确
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时间：2020-09-01 13:46:16 来源:igfitidea点击:
Incorrect syntax for Union All query
提问by l--''''''---------''''''''''''
I am trying to combine to queries with union all:
我正在尝试将查询与 union all 结合起来：
use SalesDWH
go
select cast(COUNT([specimen id]) as varchar) +'|'+[practice name]+'|'+b.[mlis practice id]+'|'+[practice code]+'|'+[Requesting Physician]+'|'+c.salesrep+'|'+
cast(c.dateestablished as varchar)+'|'+ c.practicecity+'|'+c.practicestate
from quicklabdump a
inner join qlmlismapping b
on (b.[quiklab practice code] = a.[practice code])
inner join PracticeandPhysician c
on (a.[Requesting Physician]=c.doctorfirstname+' '+c.DOCTORLASTNAME
and a.[practice code]=c.practicecode)
where DATEPART(yy, [DATE entered]) = 2011
and DATEPART(mm, [DATE entered]) = 12
group by a.[practice name],b.[mlis practice id],a.[practice code],
a.[Requesting Physician],c.salesrep,c.dateestablished, c.practicecity,c.practicestate
order by COUNT([specimen id]) desc
union all
select cast(COUNT([specimen id]) as varchar) +'|'+[practice name]+'|'+b.[mlis practice id]+'|'+[practice code]+'|'+[Requesting Physician]+'|'+c.salesrep+'|'+
cast(c.dateestablished as varchar)+'|'+ c.practicecity+'|'+c.practicestate
from quicklabdump a
inner join qlmlismapping b
on (b.[quiklab practice code] = a.[practice code])
inner join PracticeandPhysician c
on (a.[Requesting Physician]=c.doctorfirstname+' '+c.DOCTORLASTNAME
and a.[practice code]=c.practicecode)
where DATEPART(yy, [DATE entered]) = 2011
and DATEPART(mm, [DATE entered]) = 11
group by a.[practice name],b.[mlis practice id],a.[practice code],
a.[Requesting Physician],c.salesrep,c.dateestablished, c.practicecity,c.practicestate
order by COUNT([specimen id]) desc
But I am getting this error:
但我收到此错误：
Msg 156, Level 15, State 1, Line 2
Incorrect syntax near the keyword 'union'.
What am I doing wrong?
我究竟做错了什么？
回答by Eric
Your order bycan only go on the last statement:
你order by只能继续最后一句：
use SalesDWH
go
select cast(COUNT([specimen id]) as varchar) +'|'+[practice name]+'|'+b.[mlis practice id]+'|'+[practice code]+'|'+[Requesting Physician]+'|'+c.salesrep+'|'+
cast(c.dateestablished as varchar)+'|'+ c.practicecity+'|'+c.practicestate
from quicklabdump a
inner join qlmlismapping b
on (b.[quiklab practice code] = a.[practice code])
inner join PracticeandPhysician c
on (a.[Requesting Physician]=c.doctorfirstname+' '+c.DOCTORLASTNAME
and a.[practice code]=c.practicecode)
where DATEPART(yy, [DATE entered]) = 2011
and DATEPART(mm, [DATE entered]) = 12
group by a.[practice name],b.[mlis practice id],a.[practice code],
a.[Requesting Physician],c.salesrep,c.dateestablished, c.practicecity,c.practicestate
union all
select cast(COUNT([specimen id]) as varchar) +'|'+[practice name]+'|'+b.[mlis practice id]+'|'+[practice code]+'|'+[Requesting Physician]+'|'+c.salesrep+'|'+
cast(c.dateestablished as varchar)+'|'+ c.practicecity+'|'+c.practicestate
from quicklabdump a
inner join qlmlismapping b
on (b.[quiklab practice code] = a.[practice code])
inner join PracticeandPhysician c
on (a.[Requesting Physician]=c.doctorfirstname+' '+c.DOCTORLASTNAME
and a.[practice code]=c.practicecode)
where DATEPART(yy, [DATE entered]) = 2011
and DATEPART(mm, [DATE entered]) = 11
group by a.[practice name],b.[mlis practice id],a.[practice code],
a.[Requesting Physician],c.salesrep,c.dateestablished, c.practicecity,c.practicestate
order by COUNT([specimen id]) desc
This is because the ordering happens after the result set is attained, which is post union. You can't order a set before it finally returns.
这是因为排序发生在获得结果集之后，即后联合。在它最终返回之前，您不能订购一套。
回答by Hogan
remove the first
删除第一个
order by COUNT([specimen id]) desc
or do this:
或这样做：
select cDATEPART(mm, [DATE entered]) as Month, cast(COUNT([specimen id]) as varchar) +'|'+[practice name]+'|'+b.[mlis practice id]+'|'+[practice code]+'|'+[Requesting Physician]+'|'+c.salesrep+'|'+
cast(c.dateestablished as varchar)+'|'+ c.practicecity+'|'+c.practicestate
from quicklabdump a
inner join qlmlismapping b
on (b.[quiklab practice code] = a.[practice code])
inner join PracticeandPhysician c
on (a.[Requesting Physician]=c.doctorfirstname+' '+c.DOCTORLASTNAME
and a.[practice code]=c.practicecode)
where DATEPART(yy, [DATE entered]) = 2011
and DATEPART(mm, [DATE entered]) in (11,12)
group by DATEPART(mm, [DATE entered]), a.[practice name],b.[mlis practice id],a.[practice code],
a.[Requesting Physician],c.salesrep,c.dateestablished, c.practicecity,c.practicestate
order by COUNT([specimen id]) desc
You can also say something like
你也可以这样说
select CASE WHEN cDATEPART(mm, [DATE entered]) = 11 THEN 'The 11th Month'
WHEN cDATEPART(mm, [DATE entered]) = 12 THEN 'The 12th Month' END as [when], ...
