Order By with Union Sql Server 2008

Question

CREATE PROCEDURE [dbo].[spReport]
        @FromDate DATETIME = NULL,
        @ToDate DATETIME = NULL,
        @TenantID int ,
        @BusinessUnitId int
AS
BEGIN
  Declare @listStr Varchar(max), @listValue Varchar(max)
  Select 
     @listStr = COALESCE(@listStr+',' ,'') + FieldLabel 
  From 
     (Select Distinct Top 100 
         FieldLabel, ControlTypeId 
      From 
         PaymentCustomFieldDefinitions PCFD
      Inner Join 
         Product P On P.Id = PCFD.ProductId
      Where 
         P.TenantId = @TenantId
      Order By 
         ControlTypeId Desc) R
   Set @listStr = ',' + @listStr
   Set @listStr = IsNull(@listStr, '')
   Select       
       'Confirmation Number,Business Unit,Bank Account,Merchant Account,Product Name,Payment Date,Payment Time,Total Amount,Status,First Name,Last Name,Payment Method' + @listStr  
   Union
   SELECT       
      p.ConfirmationNumber + ',' + bu.Name + ',' + p.TenantBankAccountName + ',' + Case When ma.Name IS NULL then '' ELSE ma.Name END  + ',' + pd.Name + ',' + 
      cast(P.PaymentDate as Varchar(11)) + ',' + convert(VARCHAR(8), P.PaymentDate,108) + ',' + Cast(p.TotalDue As Varchar(20)) + ',' + p.PaymentStatusText + ',' + p.PayorFirstName + ',' + p.PayorLastName + ',' + p.PaymentMethodText + ',' + [dbo].[GetPaymentReferenceAndCustomFields](p.Id,@listStr) 
   FROM 
      Payment p 
   INNER JOIN 
      Product pd ON p.ProductId = pd.Id
   INNER JOIN 
      BusinessUnit bu ON pd.BusinessUnitId = bu.Id 
   INNER JOIN 
      ProductDetailPayment pdp ON p.ProductId = pdp.ProductId
   LEFT OUTER JOIN 
      MerchantAccount ma ON  ma.Id = pdp.MerchantAccountId   
   WHERE 
      p.PaymentDate BETWEEN @FromDate AND @ToDate 
      AND p.TenantId = @TenantId  AND pd.BusinessUnitId= @BusinessUnitId
   ORDER BY 
      p.ProductId desc
END

使用Order by:

时出现此错误

Msg 4104，级别16，状态1，过程spReport，第41行
无法绑定多部分标识符"p.p productid"。
Msg 104，级别16，状态1，过程spQueryPaymentDetailReport，第41行
如果语句中包含UNION、INTERSECT或EXCEPT操作符，则ORDER BY项必须出现在select列表中。

Answer 1

你不能在ORDER BY中引用p.ProductId，因为第一个子查询没有p数据集。

您不能在ORDER BY中引用ProductId列，因为在组合结果集中没有该名称的列。

要解决这些问题，您可以添加一个ProductId列，并且，如果最终输出必须像在查询中那样包含单个列，则使用派生表:

SELECT
  p.CSV
FROM (
    Select
        ProductId = 2147483647,
        CSV = 'Confirmation Number,Business Unit,Bank Account,Merchant Account,Product Name,Payment Date,Payment Time,Total Amount,Status,First Name,Last Name,Payment Method' + @listStr
    Union
    SELECT
       p.ProductId,
       p.ConfirmationNumber + ',' + bu.Name + ',' + p.TenantBankAccountName + ',' + Case When ma.Name IS NULL then '' ELSE ma.Name END  + ',' + pd.Name + ',' +
       cast(P.PaymentDate as Varchar(11)) + ',' + convert(VARCHAR(8), P.PaymentDate,108) + ',' + Cast(p.TotalDue As Varchar(20)) + ',' + p.PaymentStatusText + ',' + p.PayorFirstName + ',' + p.PayorLastName + ',' + p.PaymentMethodText + ',' + [dbo].[GetPaymentReferenceAndCustomFields](p.Id,@listStr)
    FROM
       Payment p
    INNER JOIN
       Product pd ON p.ProductId = pd.Id
    INNER JOIN
       BusinessUnit bu ON pd.BusinessUnitId = bu.Id
    INNER JOIN
       ProductDetailPayment pdp ON p.ProductId = pdp.ProductId
    LEFT OUTER JOIN
       MerchantAccount ma ON  ma.Id = pdp.MerchantAccountId
    WHERE
       p.PaymentDate BETWEEN @FromDate AND @ToDate 
       AND p.TenantId = @TenantId  AND pd.BusinessUnitId= @BusinessUnitId
) p
ORDER BY
   p.ProductId desc
;

第一行被分配为MaxInt ID值，因为，据我所知，它是标题行，必须首先根据指定的ORDER BY p.ProductId DESC子句(并且因为我假设ProductId是int，当然)。