don't know whether nodes of type 719 are equal

... yeah, me neither.

Hi all, I have an interesting one for you today. I'm writing a new \dd
command (one that actually works), and I have come across the following
situation:

SELECT DISTINCT a.aggname as "Name" FROM pg_aggregate a
UNION ALL
SELECT DISTINCT p.proname as "Name" FROM pg_proc p
UNION ALL
SELECT DISTINCT o.oprname as "Name" FROM pg_operator o
UNION ALL
SELECT DISTINCT t.typname as "Name" FROM pg_type t
UNION ALL
SELECT DISTINCT c.relname as "Name" FROM pg_class c
;

(It doesn't make much sense as it stands, but I have picked out the
offending parts.)

I get
NOTICE: equal: don't know whether nodes of type 719 are equal

Actually, I get several of these. Depending on the number of select
clauses, I get 1 for the third, 2 for the 4th, 3 for the 5th, etc. So the
above query gives me 6 notices. A query with only two select clauses gives
me none.

Without the DISTINCTs everything goes fine.

Now this seems to have something to do with a lack of an equal operator
for the type "name", right? Interestingly enough, the type name has oid
19, whereas type 719 is "_circle", or what does the 719 refer to?

Thanks,
Peter

--
Peter Eisentraut Sernanders vaeg 10:115
peter_e(at)gmx(dot)net 75262 Uppsala
http://yi.org/peter-e/ Sweden