Solved

how to  check whether a sql query have result or not using store procedure?

Posted on 2002-07-17
4
178 Views
Last Modified: 2012-05-04
how to  check whether a sql query have result or not using store procedure?

eg. Select * from table
0
Comment
Question by:AStronus
  • 2
4 Comments
 
LVL 2

Expert Comment

by:Paullkha
ID: 7160386
@@rowcount
0
 
LVL 69

Accepted Solution

by:
Scott Pletcher earned 200 total points
ID: 7160431
That is correct.  Be sure, though, to save the value if you intend to test anyplace after the very next line.  For example, this code won't work as expected:

SELECT * FROM table
SET @date = GETDATE()
IF @@ROWCOUNT > 0

The SET statement resets @@ROWCOUNT (to 1)!  So, if you need the value of @@ROWCOUNT later, do this:

DECLARE @rowcount INT
SELECT * FROM table
SET @rowcount = @@rowcount
SET @date = GETDATE()
IF @rowcount > 0

By the way, the same is true for @@ERROR.

0
 

Author Comment

by:AStronus
ID: 7160676
that odd, i have test that before and it didn't work, now it work so weird
0
 
LVL 69

Expert Comment

by:Scott Pletcher
ID: 7160706
Just be sure to do the save IMMEDIATELY after the SELECT (or INSERT or UPDATE or DELETE -- @@ROWCOUNT works for all) and it should work.  

Note that if you want to save BOTH @@ROWCOUNT and @@ERROR you have to save both in one line using a SELECT, like this:

DECLARE @error INT
DECLARE @rowcount INT

SELECT * FROM anyTable
SELECT @rowcount = @@ROWCOUNT, @error = @@ERROR
0

Featured Post

Simplifying Server Workload Migrations

This use case outlines the migration challenges that organizations face and how the Acronis AnyData Engine supports physical-to-physical (P2P), physical-to-virtual (P2V), virtual to physical (V2P), and cross-virtual (V2V) migration scenarios to address these challenges.

Question has a verified solution.

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

Suggested Solutions

The Delta outage: 650 cancelled flights, more than 1200 delayed flights, thousands of frustrated customers, tens of millions of dollars in damages – plus untold reputational damage to one of the world’s most trusted airlines. All due to a catastroph…
Ever wondered why sometimes your SQL Server is slow or unresponsive with connections spiking up but by the time you go in, all is well? The following article will show you how to install and configure a SQL job that will send you email alerts includ…
Using examples as well as descriptions, and references to Books Online, show the different Recovery Models available in SQL Server and explain, as well as show how full, differential and transaction log backups are performed
This videos aims to give the viewer a basic demonstration of how a user can query current session information by using the SYS_CONTEXT function

860 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