Question

I wrote a trigger for whenever an update occurs in the table. But the trigger is not executing after update. The db used is SQLServer.

create trigger mytrigger on t_emp after update
as
begin
   select * from t_emp
end

Thanks

Answer 1

Triggers are used for further processing after UPDATEs or INSERTs etc, typically for history or audit tables, or for complex data integrity logic. Not for data retrieval. Triggers can break a lot of client code (see this on SO)

• To get the output of what you’ve just updated, use the OUTPUT clause.
• To get all rows from the table, use a second SELECT statement