Re: Tom Lane
Tom Lane <tgl@sss.pgh.pa.us>
From: Tom Lane <tgl@sss.pgh.pa.us>
To: Chris <chrisb@nimrod.itg.telstra.com.au>
Cc: "pgsql-hackers@postgreSQL.org" <pgsql-hackers@postgreSQL.org>
Date: 2000-09-06T14:26:20Z
Lists: pgsql-hackers
Chris <chrisb@nimrod.itg.telstra.com.au> writes: > Tom, the following was said in the apache turbine project mailing list a > while back regarding telling the difference between an ordinary oid > column and an oid column that points to a large object. Can you confirm > if this is true regarding the reference to change in v 7.1 ? > Tom Lane from the pgsql team told me that in v 7.1 there will be a way > to identify the difference between a binary column and an oid column." I don't recall saying any such thing, sorry (at least not as far as the backend is concerned --- the particular issue you are quoting seemed to be just an ODBC driver question). There already is a solution of sorts in contrib/lo, if you care to use it. I seem to recall speculating that it'd be a good idea to move that into the mainstream, but nothing's been done about it. I think we are mostly waiting to see how much usage of LOs remains after people get comfortable with TOAST --- it may be that improving the LO facilities beyond where they are will just be gilding a dead lily. I do plan to check over and commit Denis Perchine's fix to store large objects in a single table, instead of two files per LO (see patches list for 6/27/00). That should solve our existing performance problems with thousands of LOs, and since he already did the work it'd be silly not to include it. Beyond that I'm in wait-and-see mode for more LO work. regards, tom lane