"Ian McFarland" <[EMAIL PROTECTED]> writes:
> CREATE RULE table_b_insert_rule AS ON INSERT TO table_b
> DO (UPDATE table_b SET active = 'f', yield = new.id WHERE table_a_id
> = new.table_a_id AND id != new.id;);
Rules are macros. Since what is substituted for new.id in this case is
a nextval() call, you have a multiple-evaluation problem. The above is
a pretty horrid way to do things anyway --- you should probably be using
a trigger instead.
regards, tom lane
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