Sql server 2008 r2 SQL Server 2008 R2中的BCP导出问题

输出

INSERT INTO DVR_DOCUMENTS(path, Document)
Select 
       'C:\2.csv', 1.csv  
    FROM OPENROWSET 
       (BULK 'C:\2.csv', SINGLE_BLOB) Document

Declare @sql varchar(500)

set @sql = 'BCP "select DOCUMENT from [dbname].dbo.DVR_DOCUMENTS Where ID=1" QUERYOUT C:\7.CSV -T -f C:\DVR_DOCUMENTS.fmt -S ' + @@SERVERNAME

print @SQL
EXEC master.dbo.xp_CmdShell @sql

bcp "select DOCUMENT from [Dbname].dbo.DVR_DOCUMENTS Where ID=9" queryout C:\7.pdf -T -c

---

我无法下载我上传的文件。有人能帮忙吗？

declare@SQLcommand-nvarchar（4000） set@SQLcommand='bcp“从ngap_poc.dbo.DVR_文档中选择[DOCUMENT]，其中Id=11“queryout”C:\test03.pdf“-T-n”

exec xp_cmdshell@SQLcommand

NULL
Starting copy...
NULL
1 rows copied.
Network packet size (bytes): 4096
Clock Time (ms.) Total     : 1      Average : (1000.00 rows per sec.)
NULL