On Sun, Jan 21, 2007 at 09:05:30PM -0800, Alan Hodgson wrote: > On Sunday 21 January 2007 15:56, gustavo halperin <ggh.develop@xxxxxxxxx> wrote: > > I have another question about triggers, how can I pass arguments ?? I > > read about some struct TriggerData *CurrentTriggerData, but I didn't > > found any explanation or example about how to use it in postgres SQL. > > My problem is that for any INSERT row in table 'B' I need to pass > > to the function trigger two values of this row. Do you know how to > > do so or where are examples of how to do it ?? > > You cannot pass values to a trigger. You can pass literal string arguments to a trigger function. See the CREATE TRIGGER documentation and, for PL/pgSQL, TG_ARGV and TG_NARGS. For C see "Writing Trigger Functions in C"; search for tgnargs and tgargs. http://www.postgresql.org/docs/8.2/interactive/sql-createtrigger.html http://www.postgresql.org/docs/8.2/interactive/plpgsql-trigger.html http://www.postgresql.org/docs/8.2/interactive/trigger-interface.html (These links are to the 8.2 documentation but earlier versions also support arguments to trigger functions.) -- Michael Fuhr
