 | | | Trigger problem | Trigger problem 2007-11-13 - By scott
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On Thu, 2007-11-08 at 17:56 -0800, Lucky Wijaya wrote:
> Yes, the trigger code is works. Many thanks !!
> Now I understand the use of delimiter command. Thanks again... =)
>
> My next question is, do we able to view the triggers that has been created ?
And how ?
>
> David Schneider-Joseph <david@(protected)> wrote: My apologies, try this:
>
> > DELIMITER ;;
> >
> > CREATE TRIGGER DEL_TB_INSTRUKSI AFTER DELETE ON Tb_Instruksi
> > FOR EACH ROW
> > BEGIN
> > DELETE FROM Tb_Stuffing WHERE No_Instruksi = OLD.No_Instruksi;
> > END;
> > ;;
> >
> > DELIMITER ;
>
> To answer your question:
>
> The DELIMITER statement tells MySQL to use a different set of
> characters to terminate statements. This is necessary when you want
> to use a ";" in your actual statement. In this case, the entire
> trigger definition is considered one statement, but the ";" in the
> "DELETE..." line is being interpreted as the termination of it.
>
> Yes, it's dumb.
>
> On Nov 7, 2007, at 2:53 AM, Lucky Wijaya wrote:
>
> > No, I didn't set the delimiter. But, it still have an error after I
> > set delimiter in my trigger as your example. By the way, what's
> > delimiter mean ? And what it's for ?
> >
> > Thanks to you Mr. David.
> >
> > David Schneider-Joseph wrote: Lucky,
> >
> > Did you make sure to set your delimiter before and after the CREATE
> > TRIGGER statement? e.g.:
> >
> > DELIMITER ;;
> >
> > CREATE TRIGGER DEL_TB_INSTRUKSI AFTER DELETE ON Tb_Instruksi
> > FOR EACH ROW
> > BEGIN
> > DELETE FROM Tb_Stuffing WHERE No_Instruksi = OLD.No_Instruksi;
> > END;;
> >
> > DELIMITER ;
> >
> > On Nov 6, 2007, at 11:11 PM, Lucky Wijaya wrote:
> >
> >> Hi, my name is Lucky from Indonesia. I build an database application
> >> using Delphi 7 & MySQL as the RDBMS. Now, I'm having problem in
> >> creating trigger in MySQL. Here is the code of the trigger:
> >>
> >> CREATE TRIGGER DEL_TB_INSTRUKSI AFTER DELETE ON Tb_Instruksi
> >> FOR EACH ROW
> >> BEGIN
> >> DELETE FROM Tb_Stuffing WHERE No_Instruksi = OLD.No_Instruksi;
> >> END;
> >>
> >> It results an error message that the SQL syntax (on delete command)
> >> is incorrect. I didn't find yet the incorrect part of my SQL syntax.
> >> Could somebody help my problem ? Thank you very much.
> >>
> >> Note: I'm already using MySQL v. 5.0.41 and using GUI in creating
> >> the trigger. I also have tried to create the trigger through mysql
> >> command line, but it result the same error message.
> >>
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> >
> >
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> >
> >
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mysql> show triggers;
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