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SQL Server events

Posted on 2002-04-27
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Last Modified: 2010-05-02
I currently have an app that polls (using a timer with the interval set to 1000) a SQL Server table looking for changes to records.

The problem is that this has a serious impact on the performance of my system.

I was wondering if it was possible to get SQL Server to send notification to my VB application if any of the records change.
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Question by:justinhemphill
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6 Comments
 
LVL 10

Expert Comment

by:smegghead
ID: 6973196
You could create an SQL trigger, which, in turn notifies your application using some other method...
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Author Comment

by:justinhemphill
ID: 6973203
I'm not sure how to do that.
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Expert Comment

by:falconew
ID: 6973210
Create an Extended Store procedure to notify your application and create a trigger to the table you want to monitor.
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LVL 101

Expert Comment

by:mlmcc
ID: 6973739
Listening
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Author Comment

by:justinhemphill
ID: 6974765
Is it true that you can only create Extended Stored Procedures using c or c++
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Accepted Solution

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falconew earned 800 total points
ID: 6976152
If you are not familiar with C/C++ you can still write a small application using VB to notify your main application. You can use the TCP/IP control or whatever you like to notify your main application.
And then you create a trigger on the table to execute the Extended Store Procedure XP_CMDSHELL 'your small application'. That is a trick.

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