> http://www.postgresql.org/docs/8.1/interactive/triggers.html
>
> it says something like this:
>
> " It is not currently possible to write a trigger function in the
> plain SQL function language. "
The whole paragraph says.
"It is also possible to write a trigger function in C, although most
people find it easier to use one of the procedural languages. It is not
currently possible to write a trigger function in the plain SQL function
language."
That is: you can and you should write your trigger in a procedural
language. In particular - if you want to stay as closed as possible
to SQL you should use procedural SQL, which in PostgreSQL is called
PL/pgSQL:
http://www.postgresql.org/docs/8.1/interactive/plpgsql.html
Bye, Chris.
