Solved

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

Posted on 2010-08-27
2
490 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
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
2 Comments
 
LVL 58

Accepted Solution

by:
cyberkiwi earned 250 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

Get 15 Days FREE Full-Featured Trial

Benefit from a mission critical IT monitoring with Monitis Premium or get it FREE for your entry level monitoring needs.
-Over 200,000 users
-More than 300,000 websites monitored
-Used in 197 countries
-Recommended by 98% of users

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Slowly Changing Dimension Transformation component in data task flow is very useful for us to manage and control how data changes in SSIS.
In part one, we reviewed the prerequisites required for installing SQL Server vNext. In this part we will explore how to install Microsoft's SQL Server on Ubuntu 16.04.
Via a live example, show how to shrink a transaction log file down to a reasonable size.
Via a live example, show how to setup several different housekeeping processes for a SQL Server.

630 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