Andreas Joseph Krogh <andreas@visena.com> writes:
> Is there a way to define "sorting-rules" on custom-types so that I can have
> ORDER BY <my_array_of_custom_types_alias> and PG will pick my custom odering?
You'd have to write your own type, which would be a lotta work :-(.
A possible partial answer is to define the composite type as
firstname citext, lastname citext, other-fields-here
and then the regular composite-type comparison rule would give you
approximately what you said you wanted ... but only approximately.
regards, tom lane
Hm, ok. I think the most non-intrusive way for me is to craft a sub-select producing the "varchar-string-flattened" so I can order by that alias.