sql - 如何在 where 子句中连接两个或更多行与动态结果？

标签 sql t-sql coalesce table-valued-parameters

我尝试在表中 EntityId 相等的情况下使用 COALESCE 连接两行或三行，以便我的输出如下所示:

EmailAddress                         EntityId

<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="86b7b4d9e7e4e5c6e7e4e5a8e5e9eb" rel="noreferrer noopener nofollow">[email protected]</a>::::<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="a69795f9d6d7d4e6d6d7d488c5c9cb" rel="noreferrer noopener nofollow">[email protected]</a>     101
<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="3001026f5b5f59705b5f591e535f5d" rel="noreferrer noopener nofollow">[email protected]</a>::::<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="81b0b2def1eee8c1f1eee8afe2eeec" rel="noreferrer noopener nofollow">[email protected]</a>     102

现在我根据我的查询得到以下结果:

EmailAddress   EmailTypeId     EntityId

<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="b1d0d3d2f1d0d3d29fd2dedc" rel="noreferrer noopener nofollow">[email protected]</a>    12              101
<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="7f0f0e0d3f0f0e0d511c1012" rel="noreferrer noopener nofollow">[email protected]</a>    13              101
<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="503b3f39103b3f397e333f3d" rel="noreferrer noopener nofollow">[email protected]</a>    12              102
<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="6b1b04022b1b040245080406" rel="noreferrer noopener nofollow">[email protected]</a>    13              102

我使用的查询如下:

DECLARE @MyTableVariable TABLE
(

  EmailAddress nvarchar(250),
  EntityIDE int
);

INSERT @MyTableVariable(
  EmailAddress,
  EntityIDE
 )

SELECT  concat([EmailTypeID], '_____', [EmailAddress]))), [EntityID]
FROM [dbo].[Email_Addresses] where [EntityID] in 

(select [EntityID] from [Entities] where [SourcePrimaryKey] in 
    (select [MerchantOwnerID] from [dbo].[Merchant_Owners] where [MerchantID] = 1 ) and
    [EntityTypeID] = (select [EntityTypeID] from [Entity_Types] where [EntityType] = 'MerchantOwner'))

select * from @MyTableVariable

我已经定义了一个表值参数，在我的选择查询中，我将两列合并为一列，但我不知道如何使用coalesce来连接两行或多行，其中EntityId 是一样的。

我在where之后的查询返回EntityId列的列表

(select [EntityID] from [Entities] where [SourcePrimaryKey] in 
    (select [MerchantOwnerID] from [dbo].[Merchant_Owners] where [MerchantID] = 1 ) and
    [EntityTypeID] = (select [EntityTypeID] from [Entity_Types] where [EntityType] = 'MerchantOwner'))

上面的查询返回以下结果集

EntityId

101
102
103
104
...

编辑

; WITH CTE AS (
    SELECT EA.[EmailTypeID], EA.[EmailAddress], EA.[EntityID]
    FROM [dbo].[Email_Addresses] EA
    JOIN [Entities] E ON E.[EntityID] = EA.[EntityID]
    JOIN (SELECT [MerchantOwnerID] FROM [dbo].[Merchant_Owners] WHERE [MerchantID] = 1) M ON M.[MerchantOwnerID] = E.[SourcePrimaryKey]
    JOIN (SELECT [EntityTypeID] FROM [Entity_Types] WHERE [EntityType] = 'MerchantOwner') ET ON ET.[EntityTypeID] = E.[EntityTypeID])
    ,
    ABC
    As
    (
    SELECT EB.[PhoneNumber], EB.[EntityID], EB.[PhoneType]
    FROM [dbo].[Phones] EB
    JOIN [Entities] E ON E.[EntityID] = EB.[EntityID]
    JOIN (SELECT [MerchantOwnerID] FROM [dbo].[Merchant_Owners] WHERE [MerchantID] = 1) M ON M.[MerchantOwnerID] = E.[SourcePrimaryKey]
    JOIN (SELECT [EntityTypeID] FROM [Entity_Types] WHERE [EntityType] = 'MerchantOwner') ET ON ET.[EntityTypeID] = E.[EntityTypeID]
    )
SELECT STUFF((SELECT '::::' + CONVERT(NVARCHAR, [EmailTypeID]) + '_' + [EmailAddress]
            FROM CTE
            WHERE [EntityID] = T1.[EntityID]
            ORDER BY [EmailTypeID]
            FOR XML PATH ('')),1,4,'') [EmailAddress],
            T1.[EntityID],
            STUFF((SELECT '::::' + CONVERT(NVARCHAR, [PhoneType]) + '_' + [PhoneNumber]
            FROM ABC
            WHERE [EntityID] = T2.[EntityID]
            ORDER BY [PhoneType]
            FOR XML PATH ('')),1,4,'') [PhoneNumber],
            T2.[EntityID] 

FROM CTE T1, ABC T2
GROUP BY T1.[EntityID],T2.[EntityID]

这个结果给了我 56 行 我的一个 CTE 返回 8 行，另一个 CTE (ABC) 返回 7 行

我不知道为什么它会成倍增加

编辑2

; WITH CTE AS (
    SELECT EA.[EmailTypeID], EA.[EmailAddress], EA.[EntityID],
 row_number() over(partition by EA.EntityID order by EA.EntityID desc) as rn
    FROM [dbo].[Email_Addresses] EA
    JOIN [Entities] E ON E.[EntityID] = EA.[EntityID]
    JOIN (SELECT [MerchantOwnerID] FROM [dbo].[Merchant_Owners] WHERE [MerchantID] = 1) M ON M.[MerchantOwnerID] = E.[SourcePrimaryKey]
    JOIN (SELECT [EntityTypeID] FROM [Entity_Types] WHERE [EntityType] = 'MerchantOwner') ET ON ET.[EntityTypeID] = E.[EntityTypeID]
 ),
 ABC
 As
 (
 SELECT EB.[PhoneNumber], EB.[EntityID], EB.[PhoneType],
 row_number() over(partition by EB.EntityID order by EB.EntityID desc) as rn
    FROM [dbo].[Phones] EB
    JOIN [Entities] E ON E.[EntityID] = EB.[EntityID]
    JOIN (SELECT [MerchantOwnerID] FROM [dbo].[Merchant_Owners] WHERE [MerchantID] = 1) M ON M.[MerchantOwnerID] = E.[SourcePrimaryKey]
    JOIN (SELECT [EntityTypeID] FROM [Entity_Types] WHERE [EntityType] = 'MerchantOwner') ET ON ET.[EntityTypeID] = E.[EntityTypeID]
 ),
 GHK
 As
 (
  SELECT EB.[Address1], EB.[City], EB.[State],EB.[EntityID],
  row_number() over(partition by EB.EntityID order by EB.EntityID desc) as rn
    FROM [dbo].[Addresses] EB
    JOIN [Entities] E ON E.[EntityID] = EB.[EntityID]
    JOIN (SELECT [MerchantOwnerID] FROM [dbo].[Merchant_Owners] WHERE [MerchantID] = 1) M ON M.[MerchantOwnerID] = E.[SourcePrimaryKey]
    JOIN (SELECT [EntityTypeID] FROM [Entity_Types] WHERE [EntityType] = 'MerchantOwner') ET ON ET.[EntityTypeID] = E.[EntityTypeID]
 ),
 PQR
 As
 (
 SELECT EB.[MerchantOwnerID], EB.[FirstName], EB.[LastName],EB.[BusinessTitle],
 EB.[OwnershipPercentage], EB.[DateOfBirth],E.[EntityID],
  row_number() over(partition by E.EntityID order by E.EntityID desc) as rn
    FROM [dbo].[Merchant_Owners] EB
    JOIN [Entities] E ON E.[SourcePrimaryKey] = EB.[MerchantOwnerID] and [EntityTypeID]=2
    JOIN (SELECT [MerchantOwnerID] FROM [dbo].[Merchant_Owners] WHERE [MerchantID] = 1) M ON M.[MerchantOwnerID] = E.[SourcePrimaryKey]
    JOIN (SELECT [EntityTypeID] FROM [Entity_Types] WHERE [EntityType] = 'MerchantOwner') ET ON ET.[EntityTypeID] = E.[EntityTypeID]
 )

SELECT STUFF((SELECT '::::' + CONVERT(NVARCHAR, [EmailTypeID]) + '_' + [EmailAddress]
            FROM CTE
            WHERE [EntityID] = c.[EntityID]
            ORDER BY [EmailTypeID]
            FOR XML PATH ('')),1,4,'') [EmailAddress],
   c.[EntityID],
   STUFF((SELECT '::::' + CONVERT(NVARCHAR, [PhoneType]) + '_' + [PhoneNumber]
            FROM ABC
            WHERE [EntityID] = c2.[EntityID]
            ORDER BY [PhoneType]
            FOR XML PATH ('')),1,4,'') [PhoneNumber],
   c2.[EntityID] as pid,
  c3.[City],c3.[State],c3.[EntityID], c4.[FirstName]

FROM CTE c  FULL JOIN ABC c2 ON c.EntityID = c2.EntityID,
GHK c3, PQR c4
--FULL JOIN
--GHK c3 ON c.EntityID = c3.EntityID

  WHERE c.rn = 1 OR c2.rn = 1 or c3.rn=1or c4.rn=1
  group by  c.[EntityID],c2.[EntityID],c3.EntityID,c4.EntityID

它会抛出错误 列“GHK.City”在选择列表中无效，因为它未包含在聚合函数或 GROUP BY 子句中。

如果我删除此字段，则会在 GHK.State 处抛出错误，依此类推...

我的 CTE (GHK) 已经返回 7 行，所以我认为他们不需要聚合它。

知道如何出行。

我的 CTE(PQR) 也返回离散行。我也遇到了同样的错误。

最佳答案

根据您期望的输出，其中之一可以工作。

如果您希望每个 EmailTypeID 都有单独的结果(例如 12:::13、12:::14、13:::14)，则以下方法可行。

DECLARE @MyTableVariable TABLE([EmailAddress] NVARCHAR(100),[EmailTypeID] INT, [EntityID] INT)
INSERT @MyTableVariable VALUES ('<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="ed8c8f8ead8c8f8ec38e8280" rel="noreferrer noopener nofollow">[email protected]</a>',12,101)
,('<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="4b3b3a390b3b3a3965282426" rel="noreferrer noopener nofollow">[email protected]</a>',13,101)
,('<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="8ae1e5e3cae1e5e3a4e9e5e7" rel="noreferrer noopener nofollow">[email protected]</a>',12,102)
,('<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="0f7f60664f7f6066216c6062" rel="noreferrer noopener nofollow">[email protected]</a>',13,102)
,('<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="197b757871597b757871377a7674" rel="noreferrer noopener nofollow">[email protected]</a>',14,102)
SELECT CONVERT(NVARCHAR, T1.[EmailTypeID]) + '_' + T1.[EmailAddress] + '::::' + CONVERT(NVARCHAR, T2.[EmailTypeID]) + '_' + T2.[EmailAddress] [EmailAddress]
    , T1.[EntityID]
FROM @MyTableVariable T1
JOIN @MyTableVariable T2 ON T1.[EntityID] = T2.[EntityID] AND T2.[EmailTypeID] > T1.[EmailTypeID]

如果您只期望单个串联，那么这会起作用:

DECLARE @MyTableVariable2 TABLE([EmailAddress] NVARCHAR(100),[EmailTypeID] INT, [EntityID] INT)
INSERT @MyTableVariable2 VALUES ('<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="c0a1a2a380a1a2a3eea3afad" rel="noreferrer noopener nofollow">[email protected]</a>',12,101)
,('<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="dbabaaa99babaaa9f5b8b4b6" rel="noreferrer noopener nofollow">[email protected]</a>',13,101)
,('<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="f59e9a9cb59e9a9cdb969a98" rel="noreferrer noopener nofollow">[email protected]</a>',12,102)
,('<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="adddc2c4edddc2c483cec2c0" rel="noreferrer noopener nofollow">[email protected]</a>',13,102)
,('<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="bbd9d7dad3fbd9d7dad395d8d4d6" rel="noreferrer noopener nofollow">[email protected]</a>',14,102)
SELECT STUFF((SELECT '::::' + CONVERT(NVARCHAR, [EmailTypeID]) + '_' + [EmailAddress]
            FROM @MyTableVariable2
            WHERE [EntityID] = T1.[EntityID]
            ORDER BY [EmailTypeID]
            FOR XML PATH ('')),1,4,'') [EmailAddress]
    , [EntityID]
FROM @MyTableVariable2 T1
GROUP BY [EntityID]

作为旁注，我认为您的查询作为一系列联接而不是一系列 IN 语句看起来更具可读性。例如

SELECT EA.[EmailTypeID], EA.[EmailAddress], EA.[EntityID]
FROM [dbo].[Email_Addresses] EA
JOIN [Entities] E ON E.[EntityID] = EA.[EntityID]
JOIN (SELECT [MechantOwnerID] FROM [dbo].[MechantOwners] WHERE [MechantID] = 1) M ON M.[MerchantOwnerID] = E.[SourcePrimaryKey]
JOIN (SELECT [EntityTypeID] FROM [Entity_Types] WHERE [EntityType] = 'MerchantOwner') ET ON ET.[EntityTypeID] = E.[EntityTypeID]

编辑(全部一起显示整个查询):

; WITH CTE AS (
    SELECT EA.[EmailTypeID], EA.[EmailAddress], EA.[EntityID]
    FROM [dbo].[Email_Addresses] EA
    JOIN [Entities] E ON E.[EntityID] = EA.[EntityID]
    JOIN (SELECT [MechantOwnerID] FROM [dbo].[MechantOwners] WHERE [MechantID] = 1) M ON M.[MerchantOwnerID] = E.[SourcePrimaryKey]
    JOIN (SELECT [EntityTypeID] FROM [Entity_Types] WHERE [EntityType] = 'MerchantOwner') ET ON ET.[EntityTypeID] = E.[EntityTypeID])
SELECT STUFF((SELECT '::::' + CONVERT(NVARCHAR, [EmailTypeID]) + '_' + [EmailAddress]
            FROM CTE
            WHERE [EntityID] = T1.[EntityID]
            ORDER BY [EmailTypeID]
            FOR XML PATH ('')),1,4,'') [EmailAddress]
    , [EntityID]
FROM CTE T1
GROUP BY [EntityID]

如果您更喜欢使用当前的查询(或者我的查询由于某种原因不起作用)，只需编辑 CTE 中的内容即可。

EDIT2(添加了电话号码内容):

; WITH CTE AS (
    SELECT EA.[EmailTypeID], EA.[EmailAddress], EA.[EntityID]
    FROM [dbo].[Email_Addresses] EA
    JOIN [Entities] E ON E.[EntityID] = EA.[EntityID]
    JOIN (SELECT [MerchantOwnerID] FROM [dbo].[Merchant_Owners] WHERE [MerchantID] = 1) M ON M.[MerchantOwnerID] = E.[SourcePrimaryKey]
    JOIN (SELECT [EntityTypeID] FROM [Entity_Types] WHERE [EntityType] = 'MerchantOwner') ET ON ET.[EntityTypeID] = E.[EntityTypeID]
),
ABC
As
(
    SELECT EB.[PhoneNumber], EB.[EntityID], EB.[PhoneType]
    FROM [dbo].[Phones] EB
    JOIN [Entities] E ON E.[EntityID] = EB.[EntityID]
    JOIN (SELECT [MerchantOwnerID] FROM [dbo].[Merchant_Owners] WHERE [MerchantID] = 1) M ON M.[MerchantOwnerID] = E.[SourcePrimaryKey]
    JOIN (SELECT [EntityTypeID] FROM [Entity_Types] WHERE [EntityType] = 'MerchantOwner') ET ON ET.[EntityTypeID] = E.[EntityTypeID]
)


SELECT STUFF((SELECT '::::' + CONVERT(NVARCHAR, [EmailTypeID]) + '_' + [EmailAddress]
        FROM CTE
        WHERE [EntityID] = T1.[EntityID]
        ORDER BY [EmailTypeID]
        FOR XML PATH ('')),1,4,'') [EmailAddress],
        T1.[EntityID],
        STUFF((SELECT '::::' + CONVERT(NVARCHAR, [PhoneType]) + '_' + [PhoneNumber]
        FROM ABC
        WHERE [EntityID] = T1.[EntityID]
        ORDER BY [PhoneType]
        FOR XML PATH ('')),1,4,'') [PhoneNumber]
FROM CTE T1
LEFT JOIN ABC T2 ON T2.[EntityID] = T1.[EntityID]
GROUP BY T1.[EntityID]

编辑3:

SELECT COALESCE(c.[EntityID], c2.[EntityID], c3.[EntityID], c4.[EntityID]) [EntityID]
    , STUFF((SELECT '::::' + CONVERT(NVARCHAR, [EmailTypeID]) + '_' + [EmailAddress]
        FROM CTE
        WHERE [EntityID] = c.[EntityID]
        ORDER BY [EmailTypeID]
        FOR XML PATH ('')),1,4,'') [EmailAddress]
    , STUFF((SELECT '::::' + CONVERT(NVARCHAR, [PhoneType]) + '_' + [PhoneNumber]
        FROM ABC
        WHERE [EntityID] = c2.[EntityID]
        ORDER BY [PhoneType]
        FOR XML PATH ('')),1,4,'') [PhoneNumber]
    , c3.[City], c3.[State], c4.[FirstName]
FROM CTE c  
FULL JOIN ABC c2 ON c.EntityID = c2.EntityID
FULL JOIN (SELECT * FROM GHK WHERE RN = 1) c3 ON c3.[EntityID] = c.[EntityID] OR c3.[EntityID] = c2.[EntityID]
FULL JOIN (SELECT * FROM PQR WHERE RN = 1) c4 ON c4.[EntityID] = c.[EntityID] OR c4.[EntityID] = c2.[EntityID] OR c4.[EntityID] = c3.[EntityID]
GROUP BY c.[EntityID], c2.[EntityID], c3.[EntityID], c4.[EntityID], c3.[City], c3.[State], c4.[FirstName]

作为使用 UNION 如何处理当前查询的示例，这应该可行(并且避免需要 GROUP BY，因为每个实体 ID 只生成一行)。 编辑4:

; WITH CTE AS (
    SELECT EA.[EmailTypeID], EA.[EmailAddress], EA.[EntityID]
    FROM [dbo].[Email_Addresses] EA
    JOIN [Entities] E ON E.[EntityID] = EA.[EntityID]
    JOIN (SELECT [MerchantOwnerID] FROM [dbo].[Merchant_Owners] WHERE [MerchantID] = 1) M ON M.[MerchantOwnerID] = E.[SourcePrimaryKey]
    JOIN (SELECT [EntityTypeID] FROM [Entity_Types] WHERE [EntityType] = 'MerchantOwner') ET ON ET.[EntityTypeID] = E.[EntityTypeID]
    )
, ABC AS (
    SELECT EB.[PhoneNumber], EB.[EntityID], EB.[PhoneType]
    FROM [dbo].[Phones] EB
    JOIN [Entities] E ON E.[EntityID] = EB.[EntityID]
    JOIN (SELECT [MerchantOwnerID] FROM [dbo].[Merchant_Owners] WHERE [MerchantID] = 1) M ON M.[MerchantOwnerID] = E.[SourcePrimaryKey]
    JOIN (SELECT [EntityTypeID] FROM [Entity_Types] WHERE [EntityType] = 'MerchantOwner') ET ON ET.[EntityTypeID] = E.[EntityTypeID]
    )
, GHK AS (
    SELECT EB.[Address1], EB.[City], EB.[State],EB.[EntityID],
        ROW_NUMBER() OVER(PARTITION BY E.EntityID ORDER BY E.EntityID) AS RN
    FROM [dbo].[Addresses] EB
    JOIN [Entities] E ON E.[EntityID] = EB.[EntityID]
    JOIN (SELECT [MerchantOwnerID] FROM [dbo].[Merchant_Owners] WHERE [MerchantID] = 1) M ON M.[MerchantOwnerID] = E.[SourcePrimaryKey]
    JOIN (SELECT [EntityTypeID] FROM [Entity_Types] WHERE [EntityType] = 'MerchantOwner') ET ON ET.[EntityTypeID] = E.[EntityTypeID]
    )
, PQR AS (
    SELECT EB.[FirstName], E.[EntityID],
        -- EB.[MerchantOwnerID], EB.[LastName],EB.[BusinessTitle], EB.[OwnershipPercentage], EB.[DateOfBirth],
        ROW_NUMBER() OVER(PARTITION BY E.EntityID ORDER BY E.EntityID) AS RN
    FROM [dbo].[Merchant_Owners] EB
    JOIN [Entities] E ON E.[SourcePrimaryKey] = EB.[MerchantOwnerID] and [EntityTypeID]=2
    JOIN (SELECT [MerchantOwnerID] FROM [dbo].[Merchant_Owners] WHERE [MerchantID] = 1) M ON M.[MerchantOwnerID] = E.[SourcePrimaryKey]
    JOIN (SELECT [EntityTypeID] FROM [Entity_Types] WHERE [EntityType] = 'MerchantOwner') ET ON ET.[EntityTypeID] = E.[EntityTypeID]
    )
, EntityList AS (
    SELECT [EntityID] FROM CTE
    UNION
    SELECT [EntityID] FROM ABC
    UNION
    SELECT [EntityID] FROM GHK
    UNION
    SELECT [EntityID] FROM PQR
    )
SELECT EL.[EntityID]
    , STUFF((SELECT '::::' + CONVERT(NVARCHAR, [EmailTypeID]) + '_' + [EmailAddress]
            FROM CTE
            WHERE [EntityID] = EL.[EntityID]
            ORDER BY [EmailTypeID]
            FOR XML PATH ('')),1,4,'') [EmailAddress]
    , STUFF((SELECT '::::' + CONVERT(NVARCHAR, [PhoneType]) + '_' + [PhoneNumber]
            FROM ABC
            WHERE [EntityID] = EL.[EntityID]
            ORDER BY [PhoneType]
            FOR XML PATH ('')),1,4,'') [PhoneNumber]
    , c3.[City], c3.[State], c4.[FirstName]
FROM EntityList EL
LEFT JOIN CTE c1 ON c1.[EntityID] = EL.[EntityID]
LEFT JOIN ABC c2 ON c2.[EntityID] = EL.[EntityID]
LEFT JOIN (SELECT * FROM GHK WHERE RN = 1) c3 ON c3.[EntityID] = EL.[EntityID]
LEFT JOIN (SELECT * FROM PQR WHERE RN = 1) c4 ON c4.[EntityID] = EL.[EntityID]
ORDER BY EL.[EntityID]

关于sql - 如何在 where 子句中连接两个或更多行与动态结果？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/34326395/

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