I got the following trigger on my sql server 2008 database
CREATE TRIGGER tr_check_stoelen
ON Passenger
AFTER INSERT, UPDATE
AS
BEGIN
IF EXISTS(
SELECT 1
FROM Passenger p
INNER JOIN Inserted i on i.flight= p.flight
WHERE p.flight= i.flightAND p.seat= i.seat
)
BEGIN
RAISERROR('Seat taken!',16,1)
ROLLBACK TRAN
END
END
The trigger is throwing errors when i try to run the query below. This query i supposed to insert two different passengers in a database on two different flights. I'm sure both seats aren't taken, but i can't figure out why the trigger is giving me the error. Does it have to do something with correlation?
INSERT INTO passagier VALUES
(13392,5315,3,'Janssen Z','2A','October 30, 2006 10:43','M'),
(13333,5316,2,'Janssen Q','2A','October 30, 2006 11:51','V')
