When trying to write a recursive CTE using the PostGIS geometry type, I was told this:
ERROR: could not implement recursive UNION DETAIL: All column datatypes must be hashable. Is it possible to make custom types hashable? There's no hook in the CREATE TYPE call for a hash function, but can one be hooked up somewhere else? In an operator? Thanks, P -- Paul Ramsey http://cleverelephant.ca http://postgis.net -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
