Answer Posted / praveen singh

CREATE TABLE Employee_Test
(
Emp_ID INT Identity,
Emp_name Varchar(100),
Emp_Sal Decimal (10,2)
)

INSERT INTO Employee_Test VALUES ('Anees',1000);
INSERT INTO Employee_Test VALUES ('Rick',1200);
INSERT INTO Employee_Test VALUES ('John',1100);
INSERT INTO Employee_Test VALUES ('Stephen',1300);
INSERT INTO Employee_Test VALUES ('Maria',1400);

drop table Employee_Test_Audit
CREATE TABLE Employee_Test_Audit
(
transid int NOT NULL IDENTITY (1,1) ,
Emp_ID int,
Emp_name varchar(100),
Emp_Sal decimal (10,2),
Audit_Action varchar(100),
Audit_Timestamp datetime
)

CREATE TRIGGER trgAfterInsert ON [dbo].[Employee_Test]
FOR INSERT
AS
declare @empid int;
declare @empname varchar(100);
declare @empsal decimal(10,2);
declare @audit_action varchar(100);

select @empid=i.Emp_ID from inserted i;
select @empname=i.Emp_Name from inserted i;
select @empsal=i.Emp_Sal from inserted i;
set @audit_action='Inserted Record -- After Insert Trigger.';

insert into Employee_Test_Audit

(Emp_ID,Emp_Name,Emp_Sal,Audit_Action,Audit_Timestamp)
values(@empid,@empname,@empsal,@audit_action,getdate());

PRINT 'AFTER INSERT trigger fired.'
GO

insert into Employee_Test values('Chris',1500);


CREATE TRIGGER trgAfterUpdate ON [dbo].[Employee_Test]
FOR UPDATE
AS
declare @empid int;
declare @empname varchar(100);
declare @empsal decimal(10,2);
declare @audit_action varchar(100);

select @empid=i.Emp_ID from inserted i;
select @empname=i.Emp_Name from inserted i;
select @empsal=i.Emp_Sal from inserted i;

if update(Emp_Name)
set @audit_action='Updated Record -- After Update Trigger.';
if update(Emp_Sal)
set @audit_action='Updated Record -- After Update Trigger.';

insert into
Employee_Test_Audit(Emp_ID,Emp_Name,Emp_Sal,Audit_Action,Audit_Timestamp)

values(@empid,@empname,@empsal,@audit_action,getdate());

PRINT 'AFTER UPDATE Trigger fired.'
GO



update Employee_Test set Emp_Sal=1550 where Emp_ID=6


CREATE TRIGGER trgAfterDelete ON [dbo].[Employee_Test]
AFTER DELETE
AS
declare @empid int;
declare @empname varchar(100);
declare @empsal decimal(10,2);
declare @audit_action varchar(100);

select @empid=d.Emp_ID from deleted d;
select @empname=d.Emp_Name from deleted d;
select @empsal=d.Emp_Sal from deleted d;
set @audit_action='Deleted -- After Delete Trigger.';

insert into Employee_Test_Audit
(Emp_ID,Emp_Name,Emp_Sal,Audit_Action,Audit_Timestamp)
values(@empid,@empname,@empsal,@audit_action,getdate());

PRINT 'AFTER DELETE TRIGGER fired.'
GO



CREATE TRIGGER trgInsteadOfDelete ON [dbo].[Employee_Test]
INSTEAD OF DELETE
AS
declare @emp_id int;
declare @emp_name varchar(100);
declare @emp_sal int;

select @emp_id=d.Emp_ID from deleted d;
select @emp_name=d.Emp_Name from deleted d;
select @emp_sal=d.Emp_Sal from deleted d;

BEGIN
if(@emp_sal>1200)
begin
RAISERROR('Cannot delete where salary > 1200',16,1);
ROLLBACK;
end
else
begin
delete from Employee_Test where Emp_ID=@emp_id;
COMMIT;
insert into
Employee_Test_Audit(Emp_ID,Emp_Name,Emp_Sal,Audit_Action,Audit_Timestamp)
values(@emp_id,@emp_name,@emp_sal,'Deleted -- Instead Of
Delete Trigger.',getdate());
PRINT 'Record Deleted -- Instead Of Delete Trigger.'
end
END
GO

delete from Employee_Test where Emp_ID=1

select * from Employee_Test

select * from Employee_Test_Audit

ALTER TABLE Employee_Test DISABLE TRIGGER trgAfterDelete

alter table Employee_Test_Audit add column transid int NOT
NULL IDENTITY (1,1)

select top 10 * from Employee_Test_Audit order by transid
desc

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