Re: [HACKERS] Re: [PATCHES] COMMENT ON patch

Peter Eisentraut <e99re41@DoCS.UU.SE> writes:
> On Sun, 24 Oct 1999, Mike Mascari wrote:
>> So in the example you gave above, you could put a comment
>> on each of the two functions which compose the operator
>> and a command on the operator itself.

Two functions?  An operator only has one underlying function.
(Aggregates have as many as three though.)

> Try \do and see for yourself. The fix should be rather simple but I'm not
> sure where those descriptions are generated actually.

The default contents of pg_description come from the DESCR() macros in
include/catalog/*.h.  It looks like only pg_proc and pg_type have any
useful info in them in the current state of the source.  I'm guessing
that psql's \do actually looks for a description attached to the
underlying function, rather than one attached to the operator.
        regards, tom lane