David Fetter <david(at)fetter(dot)org> writes:
> While testing the upcoming FILTER clause for aggregates, Erik Rijkers
> uncovered a long-standing bug in $subject, namely that this case
> wasn't handled. Please find attached a patch by Andrew Gierth and
> myself which fixes this issue and adds a regression test to ensure it
> remains fixed.
Applied with minor editorialization.
regards, tom lane