using triggers in SQL Server

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Hi,
I have been trying to attempt this trigger. This doesn't seem to work. In this instance the program should turn the login attempts to 0 when the user in unblocked. Any suggestions please?

CREATE TRIGGER UserTrigger13
   ON  Users
   After update
AS 
DECLARE @Username nvarchar(50)
DECLARE @Num int


SET @Username = (SELECT Username FROM updated)
SET @Num = 0

UPDATE Users SET UserLoginAttempts = @Num WHERE UserBlocked = 0 AND Users.Username = @Username

BEGIN
	-- SET NOCOUNT ON added to prevent extra result sets from
	-- interfering with SELECT statements.
	SET NOCOUNT ON;

    -- Insert statements for trigger here

END
GO

Posted 16-May-12 23:57pm

kim061

Updated 17-May-12 1:21am

Mohamed Mitwalli

v2

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Mohamed Mitwalli · Answer 1 · 2012-05-17T01:26:00

Solution 3

Hi ,
Check This
By the way only trigger have the ability to get to deleted and inserted there is nothing called updated

SQL

CREATE TRIGGER UserTrigger13
   ON  Users
   After update
AS 
BEGIN
		DECLARE @Username nvarchar(50)
		DECLARE @Num int
		SET @Username = (SELECT Username FROM inserted)
		SET @Num = 0
 
			UPDATE Users SET UserLoginAttempts = @Num WHERE UserBlocked = 0 AND  Username = @Username
 
		BEGIN
			-- SET NOCOUNT ON added to prevent extra result sets from
			-- interfering with SELECT statements.
			SET NOCOUNT ON;
		 
			-- Insert statements for trigger here

		END
END

for reference http://msdn.microsoft.com/en-us/library/aa258254%28v=sql.80%29.aspx[^]
Best Regards
M.Mitwalli

Posted 17-May-12 1:26am

Mohamed Mitwalli

Updated 17-May-12 8:58am

v3

Comments

kim061 17-May-12 8:22am

this is what was returned

Msg 8197, Level 16, State 4, Procedure TriggerUpdate, Line 6
The object 'Users' does not exist or is invalid for this operation.

Mohamed Mitwalli 17-May-12 9:04am

I already execute the trigger and it work fine ,Just make sure Columns name is right
Best Regards
M.Mitwalli

kim061 17-May-12 9:07am

it is right

Dev-0001 17-May-12 9:27am

try this one
select @Username = ( select i.name FROM inserted i )

kim061 17-May-12 9:38am

incorrect syntax near =

Mohamed Mitwalli 17-May-12 14:59pm

Could you check solution again i already improve solutions

sunandandutt · Answer 2 · 2012-05-17T00:28:00

Solution 2

Try This link to understand Triggers:

http://sunandandutt.blogspot.com/2012/05/trigger.html[^]

Posted 17-May-12 0:28am

sunandandutt