在sql server cte中获取"没有为'd'的第2列指定列"？

Question

我有这个查询,但它不能正常工作,

with c as (select 
               month(bookingdate) as duration, 
               count(*) as totalbookings 
           from 
               entbookings
           group by month(bookingdate)
          ),
     d as (SELECT 
               duration, 
               sum(totalitems) 
           FROM 
               [DrySoftBranch].[dbo].[mnthItemWiseTotalQty] ('1') AS BkdQty
           group by duration
          )

select 
    c.duration, 
    c.totalbookings, 
    d.bkdqty 
from
    c 
    inner join d 
    on c.duration = d.duration

当我跑这个,我得到了

Msg 8155,Level 16,State 2,Line 1
没有为'd'的第2列指定列.

谁能告诉我我做错了什么？

另外,当我跑这个,

with c as (select 
               month(bookingdate) as duration, 
               count(*) as totalbookings 
           from 
               entbookings
           group by month(bookingdate)
          ),
     d as (select 
               month(clothdeliverydate), 
               SUM(CONVERT(INT, deliveredqty)) 
           FROM 
               barcodetable
           where 
               month(clothdeliverydate) is not null
               group by month(clothdeliverydate)
          )

select 
    c.duration, 
    c.totalbookings, 
    d.bkdqty 
from
    c 
    inner join d 
    on c.duration = d.duration

我明白了

Msg 8155,Level 16,State 2,Line 1
没有为'd'的第1 列指定列.
Msg 8155,Level 16,State 2,Line 1
没有为'd'的第2列指定列.

Answer 1

您只需要在CTE中为聚合列提供别名

d as (SELECT 
   duration, 
   sum(totalitems) as sumtotalitems
FROM 
   [DrySoftBranch].[dbo].[mnthItemWiseTotalQty] ('1') AS BkdQty
group by duration
)

Answer 2

[编辑]

我试图重写您的查询,但是一旦您将别名与定义'd'的查询中的聚合列相关联,即使您的查询也会有效.

我想你正在寻找以下内容:

第一:

select 
    c.duration, 
    c.totalbookings, 
    d.bkdqty 
from
    (select 
               month(bookingdate) as duration, 
               count(*) as totalbookings 
           from 
               entbookings
           group by month(bookingdate)
    ) AS c 
    inner join 
    (SELECT 
               duration, 
               sum(totalitems) 'bkdqty'
           FROM 
               [DrySoftBranch].[dbo].[mnthItemWiseTotalQty] ('1') AS BkdQty
           group by duration
    ) AS d 
    on c.duration = d.duration

第二个:

select 
    c.duration, 
    c.totalbookings, 
    d.bkdqty 
from
    (select 
               month(bookingdate) as duration, 
               count(*) as totalbookings 
           from 
               entbookings
           group by month(bookingdate)
    ) AS c 
    inner join 
    (select 
               month(clothdeliverydate) 'clothdeliverydatemonth', 
               SUM(CONVERT(INT, deliveredqty)) 'bkdqty'
           FROM 
               barcodetable
           where 
               month(clothdeliverydate) is not null
               group by month(clothdeliverydate)
    ) AS d 
    on c.duration = d.duration

Answer 3

单个 with 子句可以通过用逗号分隔来引入多个查询名称，但每个列都必须有一个名称

在本例中，第二个查询有一列没有：

 as (SELECT 
               duration, 
               sum(totalitems) --**HERE IS A MISSING NAME**
 FROM ...

就这样。

Answer 4

我有一个类似的查询和一个类似的问题。

SELECT
    *
FROM
    Users ru
    LEFT OUTER JOIN 
    (
        SELECT ru1.UserID, COUNT(*)
        FROM Referral r
        LEFT OUTER JOIN Users ru1 ON r.ReferredUserId = ru1.UserID
        GROUP BY ru1.UserID
    ) ReferralTotalCount ON ru.UserID = ReferralTotalCount.UserID

我发现SQL Server阻塞了该COUNT(*)列，并给我错误2 没有为列指定列。

在该COUNT(*)列上放置别名可解决此问题。

  SELECT
        *
    FROM
        Users ru
        LEFT OUTER JOIN 
        (
            SELECT ru1.UserID, COUNT(*) AS -->MyCount<--
            FROM Referral r
            LEFT OUTER JOIN Users ru1 ON r.ReferredUserId = ru1.UserID
            GROUP BY ru1.UserID
        ) ReferralTotalCount ON ru.UserID = ReferralTotalCount.UserID

Answer 5

因为您正在创建表表达式，所以必须指定该表的结构，您可以通过两种方式实现：

1：在选择中，您可以使用原始列名（如第一个示例中所示），但对于聚合，您必须使用别名（也在冲突名称中）。喜欢

sum(totalitems) as bkdqty

2：您需要在talbe名称之后指定列名rigth，然后您只需要注意名称的计数应该与查询中选择的库尔数相匹配。喜欢：

d (duration, bkdqty) 
AS (Select.... ) 

使用第二个解决方案，您的两个查询都将起作用！

Answer 6

相当直观的错误信息 - 只需要给出 d 中的列名称

更改为

d as 
 (
  select                 
     [duration] = month(clothdeliverydate),                 
     [bkdqty] = SUM(CONVERT(INT, deliveredqty))             
  FROM                 
     barcodetable            
  where                 
     month(clothdeliverydate) is not null                
  group by month(clothdeliverydate)           
 ) 

或者您可以在 cte 的定义中显式声明字段：

d ([duration], [bkdqty]) as 
 (
  select                 
     month(clothdeliverydate),                 
     SUM(CONVERT(INT, deliveredqty))             
  FROM                 
     barcodetable            
  where                 
     month(clothdeliverydate) is not null                
  group by month(clothdeliverydate)           
 )