Database.Guide

In SQL Server, you can use a logon trigger to audit and control server sessions, such as track login activity, restrict logins to SQL Server, or limit the number of sessions for a specific login.

This article provides an example of using a logon trigger to limit the number of simultaneous sessions for a specific login.

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In SQL Server, you can use the sys.server_trigger_events catalog view to return a list of server trigger events.

More specifically, this view contains one row for each event for which a server-level (synchronous) trigger fires.

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In SQL Server, you can use the sys.server_triggers catalog view to return a list of server triggers.

More specifically, this view contains the set of all server-level DDL triggers with object_type of TR or TA.

For CLR triggers, the assembly must be loaded into the master database.

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You can use the sys.triggers catalog view to return a list of triggers in a database in SQL Server.

This view contains a row for each object that is a trigger, with a type of TR or TA. 

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Some database tables include a “last modified” column, which stores the date and time that the row was last updated. Each time the row is updated, the date is updated to reflect the date and time of that update.

In SQL Server, you can use a trigger to perform this update.

A trigger is a special type of stored procedure that automatically runs when an event occurs in the database server.

You can use the CREATE TRIGGER statement to create a trigger when using T-SQL. This statement can be used to create a DML, DDL, or logon trigger.

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