Re: [INTERFACES] binary insert with JDBC
От | Peter T Mount |
---|---|
Тема | Re: [INTERFACES] binary insert with JDBC |
Дата | |
Msg-id | Pine.LNX.3.95.980514062940.2941A-100000@retep.org.uk обсуждение исходный текст |
Ответ на | Re: [INTERFACES] binary insert with JDBC (Sean Reilly <sreilly@cnri.Reston.Va.US>) |
Список | pgsql-interfaces |
On Wed, 13 May 1998, Sean Reilly wrote: > Hello, > Thanks for taking the time to reply =) > > > I'm using version 6.3.2. I just tried using blobs and it seems to > take an unusually long time to retrieve the blobs (after the record > has been retrieved). Since I know my data will be under 512 bytes, > is there any way I can store it directly in a field in the table so > I can avoid the extra lookup? If not, is there any way that I can > speed up the retrieval of the blob (insertion speed doesn't matter)? > I've already tried creating an index for the oid, but it didn't help > much. There is some overhead with BLOBS: On the first call, the driver has several queries to perform to set itself up. After that, accessing a blob is a minimum of three fastpath calls (lo_open, lo_read, lo_close). There isn't a way (yet) to store directly into a table. There was some discussion a few weeks ago about this, and I have started to look at this, but it wont be available until 6.4 -- Peter T Mount peter@retep.org.uk or petermount@earthling.net Main Homepage: http://www.retep.org.uk ************ Someday I may rebuild this signature completely ;-) ************ Work Homepage: http://www.maidstone.gov.uk Work EMail: peter@maidstone.gov.uk
В списке pgsql-interfaces по дате отправления: