Question

我有点陷入困境......我正在尝试从查询中获取输出并根据单个条件将其分解为多个文件。我收到一个错误，将varchar类型转换为int，我无法弄清楚原因。在SQL Server 2008中工作......

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

我得到的错误是：

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

我正在尝试使用LOOP值让我知道每个文件的内容。例如，LOOP ='1'表示该文件包含与LIST_ID ='1'关联的客户记录

关于错误的想法？

Answer 1

我不确定我到底知道你需要什么，但如果你想为每个LIST_ID发出BCP命令，你需要循环它们并为每一个执行。

这可能不是你需要的，而是等到我下班回家后我会发布它。

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.将varchar（max）更改为varchar（8000）
2.为所有表添加DBNAME.SCHEMA，因为默认情况下它将指向主数据库 在下方添加双引号（＆＃34;）
3. @FILENAME =＆＃39; QUERYOUT ＆＃34; C：\ Projects \ FILE _＆＃39; + Cast（@LISTID AS Varchar）+＆＃39; .TXT ＆＃ 34; -c -t -T＆＃39;
4.＆＃39;（＆＃34; 的选择CUSTOMER_NO FROM CUSTOMER A，DATA_TABLE乙WHERE A.CUSTOMER_ID = B.CUSTOMER_ID AND A.STATUS =＆＃39;＆＃39; 2＆＃39 ;＆＃39; AND LIST_ID =＆＃39; + @ LISTID +＆＃39; ＆＃34; ）＆＃39;;

从单个查询输出到多个文件

2 个答案: