SQL Server Trigger switching Insert,Delete,Update

Question

Hello is possible to switch between DML commands/operations (Insert,Delete,Update) on Trigger Body?, I try to snippet some T-SQL for understand me better :

CREA         


        

Answer 1

You can use one trigger for all commands/operations by use union join;

CREATE TRIGGER DML_ON_TABLEA
 ON  TABLEA
AFTER INSERT,DELETE,UPDATE
AS 
BEGIN
    SET NOCOUNT ON;
   --logic for insert
    insert into Backup_table (columns_name) select columns_name from inserted i
    --logic for delete
   UNION ALL
    insert into Backup_table (columns_name) select columns_name from deleted d
END
GO

--note update command like inserted command but have another command deleted