Improve company productivity with a Business Account.Sign Up

x
?
Solved

Exec(SQLString) does not return an Output value in SQL Server 2005

Posted on 2010-08-27
2
Medium Priority
?
499 Views
Last Modified: 2012-05-10
If have the following stored procedure called from a VB.Net program. The stored procedure should return @ColumnValue as Output to calling program, but it doesn't. If I execute the stored procedure in SQL Server Management Studio the value is NULL. If I change @SQLString to  .... SELECT ' + quotename(@ColumnName) + ' FROM ' .... I get the correct value. Btw T_NAM is a user-defined data type.

set ANSI_NULLS ON
set QUOTED_IDENTIFIER ON
GO

Alter PROCEDURE [dbo].[WP_SP_GET_TEXT_CUSTOM_FIELD]
       @TableName T_NAM,
       @ColumnName T_NAM,
       @WhereColumn T_NAM,
         @Criteria T_NAM,
       @ColumnValue T_NAM Output

AS

BEGIN
      
      Declare @SqlString varchar(1000)
            
      Begin Try
      
            Set @SqlString = 'SET QUOTED_IDENTIFIER OFF
                                   SELECT ' + @ColumnValue + ' = '  + quotename(@ColumnName)
                                             + ' FROM ' + quotename(@TableName)
                                   + ' WHERE ' + quotename(@WhereColumn) + ' = "' + @Criteria + '"'
      
      Exec(@SqlString)
      
      Return 0

      End Try

      Begin Catch
            
            Return ERROR_NUMBER()

      End Catch

END

The program calls the stored procedure as follows:

dbEmployees.WP_SP_GET_TEXT_CUSTOM_FIELD("PAYROLL_EMPL_CUSTOM_INFO", _
sqlCustomControls.FIELD_NAME, "EMPLOYEE_NO", txtEmplNo.Text, strTextValue)
devCtrl.Text = strTextValue


0
Comment
Question by:bobbysmarina
2 Comments
 
LVL 58

Accepted Solution

by:
cyberkiwi earned 1000 total points
ID: 33546919

Alter PROCEDURE [dbo].[WP_SP_GET_TEXT_CUSTOM_FIELD]
       @TableName T_NAM,
       @ColumnName T_NAM,
       @WhereColumn T_NAM,
         @Criteria T_NAM,
       @ColumnValue T_NAM Output

AS

BEGIN
      
      Declare @SqlString varchar(1000)
      declare @tmp table (T T_NAM)
            
      Begin Try
      
            Set @SqlString = 'SET QUOTED_IDENTIFIER OFF
                                   SELECT ' + quotename(@ColumnName)
                                             + ' FROM ' + quotename(@TableName)
                                   + ' WHERE ' + quotename(@WhereColumn) + ' = "' + @Criteria + '"'
      INSERT @tmp
      Exec(@SqlString)
      
      SELECT @ColumnValue = T from @tmp
      Return 0

      End Try

      Begin Catch
            
            Return ERROR_NUMBER()

      End Catch

END

Open in new window

0
 

Author Comment

by:bobbysmarina
ID: 33547439
That works. Thank you very much.
0

Featured Post

Build your data science skills into a career

Are you ready to take your data science career to the next step, or break into data science? With Springboard’s Data Science Career Track, you’ll master data science topics, have personalized career guidance, weekly calls with a data science expert, and a job guarantee.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

Ready to get certified? Check out some courses that help you prepare for third-party exams.
This month, Experts Exchange sat down with resident SQL expert, Jim Horn, for an in-depth look into the makings of a successful career in SQL.
Using examples as well as descriptions, and references to Books Online, show the documentation available for date manipulation functions and by using a select few of these functions, show how date based data can be manipulated with these functions.
Viewers will learn how to use the SELECT statement in SQL to return specific rows and columns, with various degrees of sorting and limits in place.

607 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question