存儲過程不能使用插入臨時表

Question

我有一個存儲過程，並且cte不能很好地在一起玩。我曾嘗試做一些研究，但都沒有成功。當我註釋掉插入到cte的##選項卡時，SP工作，我看到了cte的結果。它就在我插入到全局臨時表##選項卡時。

我收到這些錯誤。 Msg 102，Level 15，State 1，Line 39

'ALL'附近語法不正確。

消息102，級別15，狀態1，行39

附近有語法錯誤 'ALL'。

消息102，級別15，狀態1，行39

附近有語法錯誤 'ALL'。

消息102，級別15，狀態1，行39

附近有語法錯誤 'ALL'。

消息102，級別15，狀態1，行39

附近有語法錯誤 'ALL'。

SET ANSI_NULLS ON 
GO 

SET QUOTED_IDENTIFIER ON 
GO 




ALTER PROCEDURE [dbo].[csp_CALL_UCBI_DCN_DATES] 
    @FMDATE DATETIME ='2014-01-20 00:00:00.000', 
    @TODATE DATETIME ='2014-06-30 00:00:00.000' 
AS 
BEGIN 
SET NOCOUNT ON; 

DECLARE 
--@FMDATE DATETIME 
--,@TODATE DATETIME 
@FM_DATEPART_MONTH VARCHAR(2) 
,@FM_DATEPART_YEAR VARCHAR(4) 
,@TO_DATEPART_MONTH VARCHAR(2) 
,@TO_DATEPART_YEAR VARCHAR(4) 

--SET @FMDATE = '2014-01-20 00:00:00.000' 
--SET @TODATE = '2014-06-30 00:00:00.000' 
SET @FM_DATEPART_MONTH = CAST(DATEPART(M,@FMDATE) AS VARCHAR(2)) 
SET @FM_DATEPART_YEAR = CAST(DATEPART(YYYY,@FMDATE) AS VARCHAR(4)) 
SET @TO_DATEPART_MONTH = CAST(DATEPART(M,@TODATE) AS VARCHAR(2)) 
SET @TO_DATEPART_YEAR = CAST(DATEPART(YYYY,@TODATE) AS VARCHAR(4)) 

    CREATE TABLE ##tab (id INT IDENTITY(1,1) PRIMARY KEY,myDate VARCHAR(50), SQLname VARCHAR(50),myMonth VARCHAR(50),myYear VARCHAR(50)) 
;WITH cte(myDate,myMonth,myYear,SQLname) AS (

    SELECT @FMDATE AS myDate 
    ,CAST(DATEPART(M,@FMDATE) AS VARCHAR(2)) AS myMonth 
    ,CAST(DATEPART(YYYY,@FMDATE) AS VARCHAR(4)) AS myYear 
    ,CAST(DATEPART(M,@FMDATE) AS VARCHAR(2))+'_'+CAST(DATEPART(YYYY,@FMDATE) AS VARCHAR(4)) AS SQLname 
    UNION ALL 
    SELECT DATEADD(MONTH,1,myDate) AS myDate 
    ,CAST(DATEPART(M,DATEADD(MONTH,1,myDate)) AS VARCHAR(2)) AS myMonth 
    ,CAST(DATEPART(YYYY,DATEADD(MONTH,1,myDate)) AS VARCHAR(4)) AS myYear 
    ,CAST(DATEPART(M,DATEADD(MONTH,1,myDate)) AS VARCHAR(2))+'_'+CAST(DATEPART(YYYY,DATEADD(MONTH,1,myDate)) AS VARCHAR(4)) AS SQLname 
    FROM cte 
    WHERE DATEADD(MONTH,1,myDate) <= @TODATE 
) 
INSERT INTO [##tab] 
(myDate,myMonth,myYear,SQLname) 
SELECT * 
FROM cte 
--output INSERTED.myDate,INSERTED.myMonth,INSERTED.myYear,INSERTED.SQLname into [##tab] 
--(myMonth,myYear,SQLname) 
--OPTION (MAXRECURSION 0) 

------------------------------------ 

DECLARE @sql VARCHAR(8000) 
, @i INT 
,@count INT 
, @sqlname VARCHAR(15) 
, @myMonth VARCHAR(50) 
, @myYear VARCHAR(50) 

SET @i=1 
SELECT @count= COUNT(*) FROM ##tab 
WHILE @i <= @count 

BEGIN 
SELECT @SQLname=SQLname, @myMonth=myMonth, @myYear=myYear FROM ##tab WHERE id=@i 

SET @sql = ' 
    SELECT 
''UCBI_DCE_'+@SQLname+''' AS [Table], 
CAST('''+@myMonth+'/'+@myYear+'/01'' AS DATETIME) AS Date, 
     lEntity , 
     lValue , 
     lAccount , 
     lICP , 
     lCustom1 , 
     lCustom2 , 
     lCustom3 , 
     lCustom4 , 
     dP0_Input , 
     dP0_InputTransType , 
     dP1_Input , 
     dP1_InputTransType , 
     dP2_Input , 
     dP2_InputTransType , 
     dP3_Input , 
     dP3_InputTransType , 
     dP4_Input , 
     dP4_InputTransType , 
     dP5_Input , 
     dP5_InputTransType , 
     dP6_Input , 
     dP6_InputTransType , 
     dP7_Input , 
     dP7_InputTransType , 
     dP8_Input , 
     dP8_InputTransType , 
     dP9_Input , 
     dP9_InputTransType , 
     dP10_Input , 
     dP10_InputTransType , 
     dP11_Input , 
     dP11_InputTransType , 
     dTimestamp 
     FROM [DB100].[DB].[dbo].[DCN_'+@SQLname+'] 
     UNION ALL 
' 
IF @i = @count SET @sql = LEFT(@sql,LEN(@sql) - 15) 
--PRINT @sql 
EXEC (@sql) 

SET @i=@i+1 
END 
IF(OBJECT_ID('tempdb..##tab') IS NOT NULL) 
BEGIN 
    DROP TABLE ##tab 
END 
END 

GO 

Answer 1

我相信這是問題所在。我得到，你正在試圖建立一些動態的SQL和UNION ALL。問題是你在循環中執行@sql，而聲明仍在構建中。所以基本上你每次迭代都會建立並執行@sql。將最終執行移到循環外部。我縮短了您的代碼以顯示問題所在。

噢，當你將insert註釋到臨時表中時，它正在工作的原因是因爲該表中沒有行，所以你永遠不會進入循環。

BEGIN 
SELECT @SQLname=SQLname, @myMonth=myMonth, @myYear=myYear FROM ##tab WHERE id=@i 

SET @sql = ' 
    YOUR CODE 
    UNION ALL' 
IF @i = @count SET @sql = LEFT(@sql,LEN(@sql) - 15) 
--PRINT @sql 

/*HERE YOU EXECUTE WHILE IN LOOP SO THE LAST LINE IS UNION ALL*/ 
EXEC (@sql) 
SET @i=@i+1 
END 

這裏的修復

SET @i=1 
/* Set @sql outside of loop */ 
SET @sql = '' 
SELECT @count= COUNT(*) FROM ##tab 
WHILE @i <= @count 

BEGIN 
SELECT @SQLname=SQLname, @myMonth=myMonth, @myYear=myYear FROM ##tab WHERE id=@i 

/* Modified this to add to @sql each interation to build your select statement.*/ 
SET @sql = @sql + ' 
    select 1 
    UNION ALL' 

IF @i = @count SET @sql = LEFT(@sql,LEN(@sql) - 15) 

SET @i=@i+1 
END 

/* Moved exec out of loop*/ 
EXEC (@sql) 

Answer 2

爲什麼聯合ALL在動態SQL查詢的底部？這是其中的誤差來自... UNION ALL將兩個單獨的select語句與像場

簡單的例子：

select 1 
union all 
select 2 

這將返回2行...... 1和2

這裏你在這裏沒有任何跟隨它。除非你有另一個語句在它下面運行，否則將所有聯合移除，在這種情況下......將其他語句包含在代碼中。