På onsdag 11. mai 2011 kl 11:30:51 skrev Szymon Guz <mabewlun@gmail.com>:

On 11 May 2011 11:01, Andreas Joseph Krogh <andreak@officenet.no> wrote:

På onsdag 11. mai 2011 kl 10:56:19 skrev <tv@fuzzy.cz>:

 

> > Hi,
> > I was trying to create a trigger with parameters. I've found a potential
> > bug
> > when the param is boolean.
> >
> > Here is code replicating the bug:
> >
> > CREATE TABLE x(x TEXT);
> >
> > CREATE OR REPLACE FUNCTION trigger_x() RETURNS TRIGGER AS $$
> > BEGIN
> >         RETURN NEW;
> > END; $$ LANGUAGE PLPGSQL;
> >
> > CREATE TRIGGER trig_x_text BEFORE INSERT ON x FOR EACH ROW EXECUTE
> > PROCEDURE
> > trigger_x('text');
> > CREATE TRIGGER trig_x_int BEFORE INSERT ON x FOR EACH ROW EXECUTE
> > PROCEDURE
> > trigger_x(10);
> > CREATE TRIGGER trig_x_float BEFORE INSERT ON x FOR EACH ROW EXECUTE
> > PROCEDURE trigger_x(42.0);
> > CREATE TRIGGER trig_x_bool BEFORE INSERT ON x FOR EACH ROW EXECUTE
> > PROCEDURE
> > trigger_x(true);
> >
> > ERROR:  syntax error at or near "true"
> > LINE 1: ... INSERT ON x FOR EACH ROW EXECUTE PROCEDURE trigger_x(true);
>
> The docs clearly state what the valid values are and the literal 'true' is
> not one of them (TRUE is). See this:
>
> http://www.postgresql.org/docs/9.0/interactive/datatype-boolean.html

What are you trying to accomplish? "CREATE OR REPLACE FUNCTION trigger_x()" does not declare any formal-parameters, so calling it with arguments doesn't make sense. I'm surprised creating the other triggers didn't produce an error stating "No function defined with the name trigger_ix and the given argument-type".

 

That's how you define trigger function. Later you can use params when defining trigger.

Pardon my ignorance:-)

--
Andreas Joseph Krogh <andreak@officenet.no>
Senior Software Developer / CTO
Public key: http://home.officenet.no/~andreak/public_key.asc
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