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Creating Triggers for INSERT Statements Only in SQL Server
How To Create a Trigger for INSERT Only in SQL Server?
✍: FYIcenter.com
The trigger, dml_message, provided in previous tutorials was defined to handle all 3 types of DML statements, INSERT, UPDATE, and DELETE.
If you do not want the trigger to handle all 3 types of DML statements, you can list only 1 or 2 of the statement keywords. For example, the following SQL script defines a trigger that only handle the INSERT statement events:
USE FyiCenterData GO CREATE TRIGGER new_user ON fyi_users AFTER INSERT AS PRINT 'Time: '+CONVERT(VARCHAR(12),GETDATE()) + ' New users added.'; GO INSERT INTO fyi_users (name) VALUES ('Marc Kumar'); GO Time: Jul 1 2007 Records are inserted, updated, or deleted in fyi_users Time: Jul 1 2007 New users added. (1 row(s) affected) UPDATE fyi_users SET email='marc@fyicenter' WHERE name = 'Marc Kumar'; GO Time: Jul 1 2007 Records are inserted, updated, or deleted in fyi_users (1 row(s) affected)
Notice that the INSERT statement triggered two triggers to be executed: dml_message and new_user. But the UPDATE statement triggered one trigger to be executed: dml_message as expected.
It is also interesting to know that when multiple triggers are defined to handle the same event, the oldest (defined first) will be executed first.
2016-10-24, 719👍, 0💬
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