USE tempdb;
GO
IF OBJECT_ID('T1', 'U')	IS NOT NULL   DROP TABLE T1;
GO
CREATE TABLE T1(id int);
GO
IF OBJECT_ID ('tr1', 'TR') IS NOT NULL DROP TRIGGER tr1
GO
CREATE TRIGGER tr1 ON T1 instead of Insert
AS
  print('Instead of 1');
  --INSERT T1 VALUES (1);  print('Instead of 2'); -- Odkryt!!!
go
	IF OBJECT_ID ('tr2', 'TR') IS NOT NULL DROP TRIGGER tr2
	GO
	CREATE TRIGGER tr2 ON T1 AFTER Insert
	AS
	  print('After');
	go
IF OBJECT_ID ('tr3', 'TR') IS NOT NULL DROP TRIGGER tr3
GO
CREATE TRIGGER tr3 ON T1 For Insert
AS
  print('For 1');
  INSERT T1 VALUES (2); print('For 2');
go

INSERT T1 VALUES (1);
SELECT * FROM T1