Gregory Stark <stark@[EMAIL PROTECTED]
> writes:
> I think what you're suggesting is making integer and floating point
constants
> like 0 and 0.1 be treated as "unknown" or perhaps a different kind of
unknown,
> "unknown integral type" and "unknown numeric type".
No, that would be a pretty dangerous way to go about it, because it
would have side-effects on all sorts of queries whether or not they
made any use of polymorphic functions. Plus, it would only fix the
issue for numeric-group types, but the same thing would come up if
you had, say, NVL(text, varchar).
What I'd be inclined to think about is making
check_generic_type_consistency and related functions allow the
arguments matched to ANYELEMENT to be of different actual types
so long as select_common_type could determine a unique type to
coerce them all to. It'd take some refactoring (notably, because
select_common_type wants to throw error on failure, and because
there'd have to be a way to pass back the type that was selected
for use later).
regards, tom lane
--
Sent via pgsql-hackers mailing list (pgsql-hackers@[EMAIL PROTECTED]
)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-hackers
|
