Should you use database triggers?
Because a trigger resides in the database and anyone who has the required privilege can use it, a trigger lets you write a set of SQL statements that multiple applications can use. It lets you avoid redundant code when multiple programs need to perform the same database operation.
What is a trigger in database and what is its purpose?
A database trigger is procedural code that is automatically executed in response to certain events on a particular table or view in a database. The trigger is mostly used for maintaining the integrity of the information on the database.
What is instead of triggers?
INSTEAD OF triggers provide a transparent way of modifying views that cannot be modified directly through DML statements ( INSERT , UPDATE , and DELETE ). These triggers are called INSTEAD OF triggers because, unlike other types of triggers, Oracle fires the trigger instead of executing the triggering statement.
How to trigger an action in SQL Server?
Starting from that code I’m trying a slightly different action but can’t manage to even get started. The following code, taken from the question I mentioned, I just added a condition to check db name and if corresponds to the one I need, then do some action. Problem is that is no running the SET statement inside the IF BEGIN..END.
How are DDL triggers created in SQL Server?
DDL triggers in SQL Server are fired on DDL events. i.e. against create, alter and drop statements, etc. These triggers are created at the database level or server level based on the type of DDL event.
How does create trigger for update work in SQL Server?
For example, if CREATE TRIGGER FOR UPDATE is run for a table that already has an UPDATE trigger, an additional update trigger is created. In earlier versions of SQL Server, only one trigger for each INSERT, UPDATE, or DELETE data modification event is allowed for each table.
Can you define a trigger instead of a SQL statement?
INSTEAD OF. Specifies that the DML trigger launches instead of the triggering SQL statement, thus, overriding the actions of the triggering statements. You can’t specify INSTEAD OF for DDL or logon triggers. At most, you can define one INSTEAD OF trigger per INSERT, UPDATE, or DELETE statement on a table or view.