On Mon, 2004-12-06 at 00:29 -0800, Sibtay Abbas wrote:
> i see an attribute 'oid_value' with 'Oid' type in
> the ListCell union.
>
> can anyone tell me what does it represents?
Given a linked list of type T_OidList, oid_value holds the data in a
node of the list. Although int_value and oid_value are the same size at
the moment, (a) Oid is unsigned (b) there has been some thought about
changing the size of Oid (to make it 64-bit). While (b) isn't likely to
happen anytime soon AFAIK, the two types of lists are kept separate.
This also helps to reduce the need for casting.
-Neil