Hi,
Trigger functions are supposed to be able to be called only as triggers,
but apparently the check is not working in CVS HEAD:
alvherre=# create or replace function foo () returns trigger as $$ begin perform 1; return new; end; $$ language plpgsql;
CREATE FUNCTION
alvherre=# select foo();
foo
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(1 fila)
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Alvaro Herrera http://www.CommandPrompt.com/
PostgreSQL Replication, Consulting, Custom Development, 24x7 support