Sql 在联接中使用动态查询创建的临时表

我有一个动态查询，它从另一个数据库获取某些记录（数据库服务器和数据库名称是变量，因此使用动态查询）

下面是查询

DECLARE @SQLString NVARCHAR(1000)      
set @SQLString='
select distinct(select distinct
(
select * from
(
    ------- Inner query (It is more complex than this)

    select lAccountId, sAccountName 
    from '+@DatabaseServer+'.'+@DatabaseName+'.dbo.AccDetails  
    where lAccountId = 10  
    union  
    select lAccountId, sAccountName 
    from '+@DatabaseServer+'.'+@DatabaseName+'.dbo.AccHistoryDetails  
    where lAccountId = 10 
) A
    for xml raw(''Account''), ROOT(''Accounts''), ELEMENTS 
)) as AccXmlValue,
lAccountId as AccountId      
into       
 #tmpAccDetails
from       
 AccountDetails      
where       
 AccountDetails.laccountID in (''10,11'')'     

EXECUTE (@SQLString)    

----- This is the final SQL statement (It is more complex than this)

select * from 
MainAccTable M
inner join #tmpAccDetails tmp on M.lAccountId = tmp.AccountId 

我想将

#tmpAccDetails

与

mainactable

结合使用

如何实现这一点，因为临时表不在动态SQL之外的范围内

使用全局临时表可以解决这个问题，但是在这个场景中使用它会是一个好主意吗

我的问题与此类似，只是我必须在join中使用

#tmpAccDetails

表，而不是一次从中选择数据

---

任何帮助都将不胜感激。谢谢。

如果您先创建临时表，我想您会没事的

例如

DECLARE @SQLString NVARCHAR(1000)      

CREATE TABLE #tmpAccDetails
(lAccountId int, 
 sAccountName  NVArchar(100)
);


set @SQLString='
select distinct(select distinct
(
select * from
(
    ------- Inner query (It is more complex than this)

    select lAccountId, sAccountName 
    from '+@DatabaseServer+'.'+@DatabaseName+'.dbo.AccDetails  
    where lAccountId = 10  
    union  
    select lAccountId, sAccountName 
    from '+@DatabaseServer+'.'+@DatabaseName+'.dbo.AccHistoryDetails  
    where lAccountId = 10 
) A
    for xml raw(''Account''), ROOT(''Accounts''), ELEMENTS 
)) as AccXmlValue,
lAccountId as AccountId      
into       
 #tmpAccDetails
from       
 AccountDetails      
where       
 AccountDetails.laccountID in (''10,11'')'     

EXECUTE (@SQLString)    

Select * from 
MainAccTable M
inner join #tmpAccDetails tmp on M.lAccountId = tmp.AccountId 

---

如果你先创建临时表，我想你会没事的

例如

DECLARE @SQLString NVARCHAR(1000)      

CREATE TABLE #tmpAccDetails
(lAccountId int, 
 sAccountName  NVArchar(100)
);


set @SQLString='
select distinct(select distinct
(
select * from
(
    ------- Inner query (It is more complex than this)

    select lAccountId, sAccountName 
    from '+@DatabaseServer+'.'+@DatabaseName+'.dbo.AccDetails  
    where lAccountId = 10  
    union  
    select lAccountId, sAccountName 
    from '+@DatabaseServer+'.'+@DatabaseName+'.dbo.AccHistoryDetails  
    where lAccountId = 10 
) A
    for xml raw(''Account''), ROOT(''Accounts''), ELEMENTS 
)) as AccXmlValue,
lAccountId as AccountId      
into       
 #tmpAccDetails
from       
 AccountDetails      
where       
 AccountDetails.laccountID in (''10,11'')'     

EXECUTE (@SQLString)    

Select * from 
MainAccTable M
inner join #tmpAccDetails tmp on M.lAccountId = tmp.AccountId 

---

只需更改语句的顺序，如下所示：

DECLARE @SQLString NVARCHAR(1000)   

set @SQLString='
select distinct(select distinct
(
select * from
(
    ------- Inner query (It is more complex than this)

    select lAccountId, sAccountName 
    from '+@DatabaseServer+'.'+@DatabaseName+'.dbo.AccDetails  
    where lAccountId = 10  
    union  
    select lAccountId, sAccountName 
    from '+@DatabaseServer+'.'+@DatabaseName+'.dbo.AccHistoryDetails  
    where lAccountId = 10 
) A
    for xml raw(''Account''), ROOT(''Accounts''), ELEMENTS 
)) as AccXmlValue,
lAccountId as AccountId      
into       
 #tmpAccDetails
from       
 AccountDetails      
where       
 AccountDetails.laccountID in (''10,11'')'     


CREATE TABLE #tmpAccDetails
(lAccountId int, 
 sAccountName  NVArchar(100)
);

INSERT INTO #tmpAccDetails
EXEC sp_executesql @sSQL    

Select * from 
MainAccTable M
inner join #tmpAccDetails tmp on M.lAccountId = tmp.AccountId 

---

只需更改语句的顺序，如下所示：

DECLARE @SQLString NVARCHAR(1000)   

set @SQLString='
select distinct(select distinct
(
select * from
(
    ------- Inner query (It is more complex than this)

    select lAccountId, sAccountName 
    from '+@DatabaseServer+'.'+@DatabaseName+'.dbo.AccDetails  
    where lAccountId = 10  
    union  
    select lAccountId, sAccountName 
    from '+@DatabaseServer+'.'+@DatabaseName+'.dbo.AccHistoryDetails  
    where lAccountId = 10 
) A
    for xml raw(''Account''), ROOT(''Accounts''), ELEMENTS 
)) as AccXmlValue,
lAccountId as AccountId      
into       
 #tmpAccDetails
from       
 AccountDetails      
where       
 AccountDetails.laccountID in (''10,11'')'     


CREATE TABLE #tmpAccDetails
(lAccountId int, 
 sAccountName  NVArchar(100)
);

INSERT INTO #tmpAccDetails
EXEC sp_executesql @sSQL    

Select * from 
MainAccTable M
inner join #tmpAccDetails tmp on M.lAccountId = tmp.AccountId 

您是否考虑过使用“OPENDATASOURCE”从另一个数据库访问数据？

可以使用此方法连接来自不同数据库的表

    SELECT *
    FROM MainAccTable M
    INNER JOIN OPENDATASOURCE ('SQLOLEDB', 'Data Source=@myInstance;User ID=@myUserName;Password=@myPassword).XXX.dbo.AccountId AS tmp 
ON tmp.AccountId = M.lAccountId 

您是否考虑过使用“OPENDATASOURCE”从另一个数据库访问数据？

可以使用此方法连接来自不同数据库的表

    SELECT *
    FROM MainAccTable M
    INNER JOIN OPENDATASOURCE ('SQLOLEDB', 'Data Source=@myInstance;User ID=@myUserName;Password=@myPassword).XXX.dbo.AccountId AS tmp 
ON tmp.AccountId = M.lAccountId 

---

我自己解决了这个问题，并将答案张贴在这里，以便其他人也能从中受益

DECLARE @SQLString NVARCHAR(MAX)      
set @SQLString='
select distinct(select distinct
(
select * from
(
------- Inner query (It is more complex than this)

select lAccountId, sAccountName 
from '+@DatabaseServer+'.'+@DatabaseName+'.dbo.AccDetails  
where lAccountId = 10  
union  
select lAccountId, sAccountName 
from '+@DatabaseServer+'.'+@DatabaseName+'.dbo.AccHistoryDetails  
where lAccountId = 10 
) A
for xml raw(''Account''), ROOT(''Accounts''), ELEMENTS 
)) as AccXmlValue,
lAccountId as AccountId      
from       
 '+@DatabaseServer+'.'+@DatabaseName+'.dbo.AccountDetails     
where       
 laccountID in (''10,11'')' 

---- Create temp table here
CREATE TABLE #tmpAccDetails 
(
AccXmlValue NVarchar(max),
AccountId int 
);

---- Insert into temp table here
INSERT INTO #tmpAccDetails EXECUTE (@SQLString)

---- Select from temp table here
Select * from 
MainAccTable M
inner join #tmpAccDetails tmp on M.lAccountId = tmp.AccountId 

---

我自己解决了这个问题，并将答案张贴在这里，以便其他人也能从中受益

DECLARE @SQLString NVARCHAR(MAX)      
set @SQLString='
select distinct(select distinct
(
select * from
(
------- Inner query (It is more complex than this)

select lAccountId, sAccountName 
from '+@DatabaseServer+'.'+@DatabaseName+'.dbo.AccDetails  
where lAccountId = 10  
union  
select lAccountId, sAccountName 
from '+@DatabaseServer+'.'+@DatabaseName+'.dbo.AccHistoryDetails  
where lAccountId = 10 
) A
for xml raw(''Account''), ROOT(''Accounts''), ELEMENTS 
)) as AccXmlValue,
lAccountId as AccountId      
from       
 '+@DatabaseServer+'.'+@DatabaseName+'.dbo.AccountDetails     
where       
 laccountID in (''10,11'')' 

---- Create temp table here
CREATE TABLE #tmpAccDetails 
(
AccXmlValue NVarchar(max),
AccountId int 
);

---- Insert into temp table here
INSERT INTO #tmpAccDetails EXECUTE (@SQLString)

---- Select from temp table here
Select * from 
MainAccTable M
inner join #tmpAccDetails tmp on M.lAccountId = tmp.AccountId 

---

---

不，这不起作用。数据不会以这种方式插入临时表。它不会给出任何错误，它返回空结果。这表明它正在插入某个位置，或者动态sql没有返回行。我对这一点很好奇……。我想，在动态查询之后，我将试验temp表是否超出范围。你知道实现这个功能的其他方法吗？我已经自己解决了这个问题并发布了答案+感谢你的时间和努力：）不，这不起作用。数据不会以这种方式插入临时表。它不会给出任何错误，它返回空结果。这表明它正在插入某个位置，或者动态sql没有返回行。我对这一点很好奇……。我想，在动态查询之后，我将试验temp表是否超出范围。你知道实现这个功能的其他方法吗？我已经自己解决了这个问题并发布了答案+1感谢您的时间和精力：）这里是什么？@ser_nicky如果我将其作为查询运行，它会起作用，如果它放在存储过程中，它就不起作用。@Senjuti Mahapatra-哦，您没有提到这部分代码应该在存储过程中运行。由于您尚未提供SP详细信息，请查看：@ser_nicky:您的回答几乎正确，帮助我解决了问题。我自己解决了这个问题，并把答案贴了出来+感谢您的时间和精力。这里是什么？@ser_nicky如果我将其作为查询运行，它会起作用，如果它放在存储过程中，它就不起作用。@Senjuti Mahapatra-哦，您没有提到这部分代码应该在存储过程中运行。由于您尚未提供SP详细信息，请查看：@ser_nicky:您的回答几乎正确，帮助我解决了问题。我自己解决了这个问题，并把答案贴了出来+感谢你的时间和努力。