Parse error in Synapse COPY command

Question

Hi,

I'm trying to bulk load csv data to Synapse table using COPY. For that I'm using a procedure call and trying to pass the KEY as a variable from python. While doing so, I'm facing parse error as given below.

ProgrammingError: ('42000', "[42000] [Microsoft][ODBC Driver 17 for SQL Server][SQL Server]Parse error at line: 2, column: 91: Incorrect syntax near 'XXXXXXXXXXXTbXXuXXXXXXXXXXXXr1XXXXXXXXXXXXP'. (103010) (SQLExecDirectW)")

Procedure Body

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

GO
CREATE PROC [SCHE].[PROC_COPY_DATA] @KeyVal VARCHAR AS
BEGIN
DECLARE @alenzi VARCHAR(500);
SET @alenzi = 'COPY INTO SCHE.TABLETEST FROM ''https://tempaccount.blob.core.windows.net/tempaccount/uploadfile.csv''
WITH (FILE_TYPE = ''CSV'', CREDENTIAL=(IDENTITY= ''Storage Account Key'', SECRET= '+ @KeyVal + '), FIELDTERMINATOR = '','', FIRSTROW = 2);'
EXEC (@alenzi )

END;

KeyVal = XXXXXXXXXXXTbXXuXXXXXXXXXXXXr1XXXXXXXXXXXXP+i/XXXX/XWXW2XWXWXWFGG8s2w==

While trying to run directly from Data Studio I'm getting same parse error.

Command tried from Data Studio.

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

exec DTAPO.PROC_COPY_DATA N'XXXXXXXXXXXTbXXuXXXXXXXXXXXXr1XXXXXXXXXXXXP+i/XXXX/XWXW2XWXWXWFGG8s2w=='

Msg 103010, Level 16, State 1, Line 1
Parse error at line: 2, column: 91: Incorrect syntax near 'XXXXXXXXXXXTbXXuXXXXXXXXXXXXr1XXXXXXXXXXXXP'.

It seems like from literal +, it is terminating the string and hence failing.

If someone knows any sort of workaround for this, Please suggest!.

Thank You.

Answer 1

Hello @ADX ,
Thanks for the ask and using Microsoft Q&A platform .

I have replied to something similar here . https://stackoverflow.com/questions/65833908/syntax-error-when-using-input-parameter-to-create-procedure/65895040#65895040

Adding the comment here for completedness .

This should work . I have created the Copy command dynamically and passing the SAS token to that . Once I have the copy command created I execute the command . The print statement , i used it as a test

CREATE PROCEDURE dbo.bulk_load
anonymous user_token VARCHAR(500)
AS
BEGIN
--DECLARE anonymous user varchar(500)
--SET anonymous user = ''''+ anonymous user_token + ''''
declare @Query varchar(max)
IF OBJECT_ID('dbo.ITEM_INFORMATION') IS NOT NULL
DROP TABLE dbo.ITEM_INFORMATION

;

CREATE TABLE dbo.ITEM_INFORMATION   
(  
    SSN VARCHAR(20),  
    Name VARCHAR(15)  
);  

SELECT @query  ='  
COPY INTO dbo.ITEM_INFORMATION  
FROM ''https://server.blob.core.windows.net/container/subfolder/file.csv''  
     WITH (FILE_TYPE = ''CSV'',  
           FIELDTERMINATOR = ''',''',  
           FIRSTROW = 2,  
           ROWTERMINATOR = ''\n'',  
           CREDENTIAL = (  
                         IDENTITY = ''Shared Access Signature'',  
                         SECRET =  '''+*anonymous user*_token+'''  
                         )  
        );'  
        print @query  
        exec(@query)  

END

Please do let me know how it goes .
Thanks
Himanshu

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