Joe Conway <[EMAIL PROTECTED]> writes:
> So if I understand correctly, all instances of anyarray and anyelement 
> in a function definition would need to be self-consistent, but the group 
> could represent essentially any datatype with its corresponding array 
> type. If we need more than one of these self consistent groups, we could 
> resort to anyarray1/anyelement1, etc. Does this sound correct?


> Also, an implementation question: if I have a type oid for an element, 
> what is the preferred method for determining the corresponding array? 
> I'm thinking that the most efficient method might be to use the 
> element-type name with a '_' prepended to get the array-type oid, but 
> that seems ugly. Thoughts?

I was thinking about that earlier.  Right now there is no other way.
We could consider adding a column to pg_type to link to the array type,
but I'm not sure it's worth the trouble.  I think if you look around,
there's probably already a subroutine someplace that does the lookup
using the '_foo' approach.

                        regards, tom lane

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