Oid?

Started by Sibtay Abbasabout 21 years ago2 messages
#1Sibtay Abbas
sibtay_abbas@yahoo.com

hi everyone

i see an attribute 'oid_value' with 'Oid' type in
the ListCell union.

can anyone tell me what does it represents?

Thank you

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#2Neil Conway
neilc@samurai.com
In reply to: Sibtay Abbas (#1)
Re: Oid?

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