從單個查詢輸出到多個文件

Question

我有點卡住了...我試圖從查詢中獲取輸出並根據單個條件將其分解成多個文件。我收到一個varchar類型轉換爲int的錯誤，我找不到原因。在SQL Server 2008中的工作...

DECLARE @LOOP AS INT; 
DECLARE @SQL AS VARCHAR(MAX); 
DECLARE @BCP AS VARCHAR(MAX); 
DECLARE @COUNTER AS INT; 
DECLARE @FILENAME AS VARCHAR(MAX); 

SET @COUNTER='1' 

SELECT @LOOP = COUNT(DISTINCT LIST_ID) FROM DATA_TABLE 
WHERE STATUS='2' AND LIST_ID IS NOT NULL ; 

SET @SQL=(SELECT CUSTOMER_NO FROM CUSTOMER A, DATA_TABLE B 
WHERE A.CUSTOMER_ID=B.CUSTOMER_ID AND A.STATUS='2' AND LIST_ID='+@LOOP+'); 

SET @FILENAME='QUERYOUT C:\Projects\FILE_"'+@LOOP+'.TXT' 

WHILE @COUNTER<=@LOOP 
BEGIN 
SELECT 
@BCP='BCP "'+@SQL+'+'+@FILENAME+'' 
SET @COUNTER=@COUNTER+1 
END 
GO 

我得到的錯誤是：

Msg 245, Level 16, State 1, Line 10 
Conversion failed when converting the varchar value '+@LOOP+' to data type int. 

我試圖使用循環值，讓我知道每個文件的內容。例如，LOOP ='1'意味着該文件包含與LIST_ID ='1'相關聯的客戶記錄。

關於錯誤的想法？

Answer 1

我不確定我完全理解你需要什麼，但是如果你想爲每個LIST_ID發出BCP命令，你需要循環它們併爲每一個執行。

這可能不是你所需要的，而不是等到我下班回家後我纔會發佈它。

DECLARE @FILENAME AS VARCHAR(MAX); 
DECLARE @LISTID INT 
DECLARE @LOOP AS INT; 
DECLARE @BCP AS VARCHAR(MAX); 
DECLARE @SQL AS VARCHAR(MAX); 

DECLARE cur CURSOR FOR SELECT DISTINCT LIST_ID FROM DATA_TABLE WHERE STATUS='2' AND LIST_ID IS NOT NULL 
OPEN cur 

FETCH NEXT FROM cur INTO @LISTID 

WHILE @@FETCH_STATUS = 0 BEGIN 
    SET @FILENAME='QUERYOUT C:\Projects\FILE_'+Cast(@LISTID AS Varchar)+'.TXT -c -t -T' 
    SET @SQL='(SELECT CUSTOMER_NO FROM CUSTOMER A, DATA_TABLE B WHERE A.CUSTOMER_ID=B.CUSTOMER_ID AND A.STATUS=''2'' AND LIST_ID='+@LISTID+')'; 
    SELECT @BCP='BCP '+@SQL+' '+@FILENAME+'' 
    EXEC xp_cmdshell @BCP 
    FETCH NEXT FROM cur INTO @LISTID 
END 

CLOSE cur  
DEALLOCATE cur 

Answer 2

1.更改爲varchar（最大值）爲varchar（8000）
2.增加DBNAME.SCHEMA爲所有的表，因爲默認情況下它會指向主數據庫。
加雙引號（「）表示
3. @ FILENAME ='QUERYOUT 」 C：\項目\ FILE _ '+角色（@LISTID爲VARCHAR）+' TXT 「 -c -t - T」
4. '（「 SELECT CUSTOMER_NO FROM CUSTOMER A，DATA_TABLE乙WHERE A.CUSTOMER_ID = B.CUSTOMER_ID AND A.STATUS = '' 2 '' AND LIST_ID = '+ @ LISTID +' 」）' ;