Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

Clear OUTPUT buffer in stored procedure

Posted on 2004-09-03
10
Medium Priority
?
484 Views
Last Modified: 2008-02-01
Hello,

I have stored procedures which call other stored procedures for the purpose of reduced points of maintenance. The issue is all the sub stored procedures in the main one also return resultsets. I want to ignore these in my main SP and retrun a single resultselt at the end, which is an error code.

Is it possible to clear the pending resultsets at the end of a storedprocedure? I found how to access the OUTPUT buffer, however there doesn't seem to be a way of clearing it. Has anyone tried this, or got any ideas for how to overcome this?

Thanks,

Mike
0
Comment
Question by:beelineuk
[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
  • 4
  • 4
  • 2
10 Comments
 
LVL 18

Expert Comment

by:ShogunWade
ID: 11974428
Perhaps you could explain a bit more.    I dont understand why you are returning resultsets from your stored procs if you dont want them
0
 
LVL 2

Author Comment

by:beelineuk
ID: 11974536
Because these stored procedures can be used independently and also return result codes to the client as required. When used within the main SP this handles the errors seperately and should just return the final result.  
0
 
LVL 18

Expert Comment

by:ShogunWade
ID: 11974763
I think ultimately that you ned to rethink the design a bit.  a stored proc should only return what is required of it.    
0
Learn Veeam advantages over legacy backup

Every day, more and more legacy backup customers switch to Veeam. Technologies designed for the client-server era cannot restore any IT service running in the hybrid cloud within seconds. Learn top Veeam advantages over legacy backup and get Veeam for the price of your renewal

 
LVL 2

Author Comment

by:beelineuk
ID: 11974893
true, but I'm gaining single point of maintainence, and by solving this problem I will be doing exactly that. Anyway I've now found quite a neat solution.
0
 
LVL 71

Expert Comment

by:Qlemo
ID: 11975066
How about stuffing that outputs into (local) temp tables?

Example:

create table #one (a varchar(20));
insert into #one exec usp_example;
...
0
 
LVL 18

Expert Comment

by:ShogunWade
ID: 11975069
Kinda off the question a bit,  but there is often big discussions about whether stored procs should be reused or not.   Im of the opinion that in most cases it is better not to reuse.... why ?   mainly because of the amount of times ive seen disasterous results where someone changes a common stored proc without realizing the knock on effects.

But its one of those subjects where there will never be a consensus ;S

0
 
LVL 2

Author Comment

by:beelineuk
ID: 11975085
That was my orginaly get out trick, however you cannot have transactions within the sprocs when you do this, so it didn't work.
0
 
LVL 18

Accepted Solution

by:
ShogunWade earned 1500 total points
ID: 11975172
" cannot have  transactions within the sprocs when you do this, so it didn't work."

Ah i can help you there.



@ the start of your procs   check @@NESTLEVEL    this will tell you how deep you are in the "Callstack"  thus if

SET @n=@@NESTLEVEL
IF @n=0
  BEGIN TRAN trnname
ELSE
  CHECKPOINT TRAN trnname


then @ end of proc

IF @n=0
   COMMIT TRAN



thus ising only 1 transaction but checkpointing the transaction at key stages to allow intermediate rollback.
0
 
LVL 71

Expert Comment

by:Qlemo
ID: 11975218
I aggree
0
 
LVL 2

Author Comment

by:beelineuk
ID: 11995068
Well it's not far off my solution I also used @@Nestlevel, however I used this to disable the select in the sub stored procedures, rather than the example above which still requires the use of temporary tables.
0

Featured Post

The Eight Noble Truths of Backup and Recovery

How can IT departments tackle the challenges of a Big Data world? This white paper provides a roadmap to success and helps companies ensure that all their data is safe and secure, no matter if it resides on-premise with physical or virtual machines or in the cloud.

Question has a verified solution.

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

I have a large data set and a SSIS package. How can I load this file in multi threading?
When trying to connect from SSMS v17.x to a SQL Server Integration Services 2016 instance or previous version, you get the error “Connecting to the Integration Services service on the computer failed with the following error: 'The specified service …
Via a live example, show how to extract information from SQL Server on Database, Connection and Server properties
Via a live example, show how to extract insert data into a SQL Server database table using the Import/Export option and Bulk Insert.

704 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