Обсуждение: oid...any optimizations
i had a table with 50 lakh record...
it has a column called oid ( obviously all the tables will have this ), but while doing any operation it is getting slow because of the number of records...
if i remove the oid column will i get any benefit, what are all the other default columns created without our knowledge..
it has a column called oid ( obviously all the tables will have this ), but while doing any operation it is getting slow because of the number of records...
if i remove the oid column will i get any benefit, what are all the other default columns created without our knowledge..
On Thu, 6 Mar 2008 12:32:01 +0530 "sathiya psql" <sathiya.psql@gmail.com> wrote: > i had a table with 50 lakh record... > > it has a column called oid ( obviously all the tables will have > this ), but while doing any operation it is getting slow because of > the number of records... Actually it isn't obvious as oids have been deprecated for years. > > if i remove the oid column will i get any benefit, what are all the > other default columns created without our knowledge.. What version of ancient PostgreSQL are you running exactly? Joshua D. Drake -- The PostgreSQL Company since 1997: http://www.commandprompt.com/ PostgreSQL Community Conference: http://www.postgresqlconference.org/ Donate to the PostgreSQL Project: http://www.postgresql.org/about/donate PostgreSQL SPI Liaison | SPI Director | PostgreSQL political pundit
Вложения
Actually it isn't obvious as oids have been deprecated for years.
no in my version it is now also available....
What version of ancient PostgreSQL are you running exactly?
postgresql 7.4
On Thu, 2008-03-06 at 12:32 +0530, sathiya psql wrote: > i had a table with 50 lakh record... > > it has a column called oid ( obviously all the tables will have > this ), but while doing any operation it is getting slow because of > the number of records... > > if i remove the oid column will i get any benefit, what are all the > other default columns created without our knowledge.. Probably not Also - do not remove oid if your sql operations require it. A 'create index x_oid_idx on table x (oid)' might help. Also see EXPLAIN in the manual. -- Regards Theo
On Thu, 6 Mar 2008 12:43:57 +0530 "sathiya psql" <sathiya.psql@gmail.com> wrote: > > > > Actually it isn't obvious as oids have been deprecated for years. > > > no in my version it is now also available.... I didn't say they were gone. I said they are deprecated. You should not be using them. > > > > > > > What version of ancient PostgreSQL are you running exactly? > > > postgresql 7.4 That is god awful ancient. Upgrade to something remotely new, like 8.2.6. Joshua D. Drake -- The PostgreSQL Company since 1997: http://www.commandprompt.com/ PostgreSQL Community Conference: http://www.postgresqlconference.org/ Donate to the PostgreSQL Project: http://www.postgresql.org/about/donate PostgreSQL SPI Liaison | SPI Director | PostgreSQL political pundit