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SQL Server Stored Procedure.

533 Views
Last Modified: 2015-06-28
Hi.
I am trying TO call this sp AND it dont EXECUTE the @sql STATEMENT, IF i look it IN watch its EMPTY. what could be the reaosn FOR it.

EXEC Update_Transaction  '22','0',0

CREATE PROCEDURE [dbo].[Update_Transaction]
    @TransactionEntryID INT ,
    @UserID INT ,
    @ID INT OUT
AS
    BEGIN

      DECLARE       @sql VARCHAR(max);

    SET NOCOUNT ON;
        IF @UserID = 0
            BEGIN

                SET @UserID = NULL;

            END
               
                  BEGIN            

SET @sql = 'INSERT  INTO + table1' +
                '( TransactionEntryID ,
                  UserID ,
               
                )
   VALUES ('+ cast(@TransactionEntryID as varchar(100))+', '+ cast(@UserID as varchar(100))   +')'

                                                       EXEC (@sql)
END      
    END
Comment
Watch Question

Éric MoreauSenior .Net Consultant
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Top Expert 2016

Commented:
does one of the variable contains NULL?

Author

Commented:
if i comment the if statement, it will run.
Éric MoreauSenior .Net Consultant
CERTIFIED EXPERT
Top Expert 2016

Commented:
so your statement does not run when @UserId = 0?

This is because you are concatenating a NULL with a string and the NULL is propagating (turning everything to NULL).

Are you trying to send a NULL to your SP?

Author

Commented:
Null to be inserted in the table column. I am passing it in the INSERT statement.
Senior .Net Consultant
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Top Expert 2016
Commented:
This one is on us!
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you cant cast NULL to nvarchar.
Vitor MontalvãoIT Engineer
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Distinguished Expert 2017

Commented:
sfazal, do you still need help with this question?

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