SQL Server BCP Command not Writing NVARCHAR(MAX) Variable Contents to File

问题

I'm having issues with SQL Server's BCP. I'm not getting an error message but the command is also not writing anything to the path specified.

Here is my code:

In this scenario, the only variable not accounted for in the code below is @MESSAGE which is a NVARCHAR(MAX) and will take up most of that space so VARCHAR(8000) won't be nearly big enough.

DECLARE @OUTPUT_TABLE VARCHAR(255) = '##temp' + CONVERT(VARCHAR(12), CONVERT(INT, RAND() * 1000000))
DECLARE @RESULT INTEGER
DECLARE @OUTPUT_EXECUTION_COMMAND NVARCHAR(MAX) = 'CREATE TABLE [' + @OUTPUT_TABLE + '] ( CONTENT NVARCHAR(MAX) )

                                                    INSERT INTO [' + @OUTPUT_TABLE + ']
                                                        SELECT @MESSAGE'

EXECUTE SP_EXECUTESQL @OUTPUT_EXECUTION_COMMAND, N'@MESSAGE NVARCHAR(MAX)', @MESSAGE

DECLARE @OUTPUT_FILE_WRITE_COMMAND VARCHAR(1000) = 'BCP ”SELECT CONTENT FROM [' + @OUTPUT_TABLE + ']"
                                                      QUERYOUT "' + @FULL_PATH + '\' + @FILE_NAME + '" -w -T -S ' + @@servername 

PRINT @OUTPUT_FILE_WRITE_COMMAND

EXECUTE @RESULT = master.sys.xp_cmdshell @OUTPUT_FILE_WRITE_COMMAND, NO_OUTPUT

PRINT @RESULT

EXECUTE ( 'DROP TABLE [' + @OUTPUT_TABLE + ']' )

So, the frustrating part is that I'm receiving an error, yet my file is not being written.

The output of PRINT @OUTPUT_FILE_WRITE_COMMAND is:

BCP ”SELECT CONTENT FROM [##temp878274]"
QUERYOUT "\\TXPDC-FS01\Profiles\cofarmer\My Sandbox\THCIC\Q2_2014\Burleson\PIPSUB2938718184092014251607.txt" -w -T -S TXPDC-STKSQL01

While the output of PRINT @RESULT is: 1

Yet nothing is being written. What am I doing wrong?

回答1:

Looks like the issue is the line break in the@OUTPUT_FILE_WRITE_COMMAND (and the erroneous double quote”). Removing the line break worked for me:

DECLARE @OUTPUT_FILE_WRITE_COMMAND VARCHAR(1000) = 'BCP "SELECT CONTENT FROM [' + @OUTPUT_TABLE + ']" QUERYOUT "' + @FULL_PATH + '\' + @FILE_NAME + '" -w -T -S ' + @@servername 

Result: 0 and the file was created.

来源：https://stackoverflow.com/questions/26059604/sql-server-bcp-command-not-writing-nvarcharmax-variable-contents-to-file