On Wed, Sep 3, 2014 at 10:49 PM, Kevin Grittner <kgri...@ymail.com> wrote: > Marti Raudsepp <ma...@juffo.org> wrote: >> The concept of "lightweight relations" that pop into existence when a >> certain kind of trigger definition is used somewhere in the function >> stack, without a CREATE TABLE, without being discoverable in >> information_schema etc., I find needs some more justification than >> I've seen in this thread. So far I've only heard that it's more >> convenient to implement in the current PostgreSQL code base. > > It is required by the SQL standard.
I had a cursory read of the SQL 20nn draft and I don't get this impression. The only place I could find discussing the behavior of "transition tables" is in Foundation "4.39.1 General description of triggers", which says: "Special variables make the data in the transition table(s) available to the triggered action. For a statement-level trigger the variable is one whose value is a transition table." There is no information about the scoping of such variables, so I assume it refers to a regular locally scoped variable. Did I miss something? Are you reading a different version of the spec? Regards, Marti -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
