create table #t
( id int identity,
  a varchar(10),
  b varchar(10) default 'hello',
  c varchar(10),
  computed_column as b + ' ' + c
)

insert #t (c)
output inserted.*
values ('test')

CREATE TABLE Test
(
    ID int identity(1,1) NOT NULL PRIMARY KEY,
    AnotherColumn varchar(50) NULL
)
GO

CREATE TRIGGER Test_Insert
   ON  Test
   AFTER INSERT
AS
SELECT 'Trigger Executed'
GO

DECLARE @tTableVar table(TestID int NOT NULL,
                         TestAnotherColumn varchar(50) NULL)


 INSERT INTO Test(AnotherColumn)
 OUTPUT inserted.ID, inserted.AnotherColumn
 INTO @tTableVar(TestID,TestAnotherColumn)
 SELECT 'Blah'
  UNION ALL
 SELECT 'Blah2'
 
 SELECT TestID,TestAnotherColumn FROM @tTableVar

DROP TABLE Test

CREATE TRIGGER TestTrigger ON TestTable
INSTEAD OF INSERT
AS
 INSERT TestTable (string)
 OUTPUT INSERTED.*
 SELECT CASE WHEN string = 'TestString' THEN string ELSE 'Stub' END
 FROM inserted