Re: Naming-scheme for db-files

Just a try on using txtidx for a speedy search over the e-mail-fields.
No success, though - fti would have been better for the task (like
finding all users who have got an aol.com-adress).

> -----Ursprüngliche Nachricht-----
> Von: Martijn van Oosterhout [mailto:kleptog(at)svana(dot)org]
> Gesendet: Donnerstag, 29. August 2002 01:18
> An: Markus Wollny
> Cc: pgsql-general(at)postgresql(dot)org
> Betreff: Re: [GENERAL] Naming-scheme for db-files
>
>
> On Wed, Aug 28, 2002 at 11:25:44PM +0200, Markus Wollny wrote:
> > After dropping the mentioned column emailindex of type txtidx (via
> > copying the data to a temporary table and renaming this table
> > afterwards), disk usage of that table evaporated from
> 1862MB to a humble
> > 61MB. And emailindex was completely empty... Very strange,
> but ~60MB is
> > very much more more like what I had estimated the size of
> that table to
> > be.
>
> What on earth is:
>
> emailindex txtidx,
>
> Anyway?
>
> > -----Ursprüngliche Nachricht-----
> > Von: Markus Wollny
> > Gesendet: Mi 28.08.2002 17:04
> > An: Martijn van Oosterhout
> > Cc: pgsql-general(at)postgresql(dot)org
> > Betreff: Re: [GENERAL] Naming-scheme for db-files
> >
> >
> >
> > Hi!
> >
> > Yes, I run vacuum every night - and log-output indicates no
> > errors at
> > all. Yet I am indeed quite puzzled about the size of this table.
> > Is
> > there some way of finding out which column consumes so much
> > space?
> >
> > select count(*) from ct_com_user return 95858 rows.
> > The CREATE-statement for this table is as follows:
> >
> > CREATE TABLE ct_com_user (
> > user_id numeric(10, 0),
> > login varchar(1000),
> > password varchar(1000),
> > status numeric(10, 0),
> > rights varchar(20) DEFAULT 'r',
> > firstname varchar(1000),
> > firstname_visible numeric(1, 0) DEFAULT 0,
> > lastname varchar(1000),
> > lastname_visible numeric(1, 0) DEFAULT 0,
> > clan varchar(1000),
> > clan_visible numeric(1, 0) DEFAULT 0,
> > street varchar(1000),
> > street_visible numeric(1, 0) DEFAULT 0,
> > zipcode varchar(1000),
> > zipcode_visible numeric(1, 0) DEFAULT 0,
> > city varchar(1000),
> > city_visible numeric(1, 0) DEFAULT 0,
> > country varchar(1000),
> > country_visible numeric(1, 0) DEFAULT 0,
> > phone1 varchar(1000),
> > phone1_visible numeric(1, 0) DEFAULT 0,
> > phone2 varchar(1000),
> > phone2_visible numeric(1, 0) DEFAULT 0,
> > mobile varchar(1000),
> > mobile_visible numeric(1, 0) DEFAULT 0,
> > fax varchar(1000),
> > fax_visible numeric(1, 0) DEFAULT 0,
> > email1 varchar(1000),
> > email1_visible numeric(1, 0) DEFAULT 0,
> > email2 varchar(1000),
> > email2_visible numeric(1, 0) DEFAULT 0,
> > icq varchar(1000),
> > icq_visible numeric(1, 0) DEFAULT 0,
> > homepage varchar(1000),
> > homepage_visible numeric(1, 0) DEFAULT 0,
> > description varchar(1000),
> > description_visible numeric(1, 0) DEFAULT 0,
> > hobbies varchar(1000),
> > hobbies_visible numeric(1, 0) DEFAULT 0,
> > signature1 varchar(4000),
> > signature2 varchar(4000),
> > signature3 varchar(4000),
> > forum_view varchar(20) DEFAULT 'flat',
> > temp_password varchar(100),
> > registered timestamptz,
> > last_login timestamptz,
> > created timestamptz DEFAULT ('now'::text)::timestamp(6) with
> > time
> > zone,
> > lines numeric(3, 0) DEFAULT 400,
> > lines_forum numeric(3, 0) DEFAULT 20,
> > forum_lines numeric(3, 0) DEFAULT 20,
> > forum_smileys varchar(50) DEFAULT 'enhanced',
> > site_id numeric(10, 0) DEFAULT 0,
> > flag_id numeric(10, 0) DEFAULT 0,
> > forum_quoting varchar(50) DEFAULT 'enhanced',
> > forum_flatpostings numeric(3, 0) DEFAULT 10,
> > forum_images numeric(1, 0) DEFAULT 2,
> > user_image numeric(1, 0) DEFAULT 0,
> > user_image_visible numeric(1, 0) DEFAULT 0,
> > chat_password varchar(50),
> > chat_last_visit timestamptz,
> > authorpoints_visible numeric(1, 0) DEFAULT 0,
> > emailindex txtidx,
> > CONSTRAINT idx_pk_ct_com_user UNIQUE (user_id),
> > CONSTRAINT idx_u_ct_com_user_login UNIQUE (login)
> > ) WITH OIDS;
> >
> > As hardly anyone actually uses a signature, hobby or
> > description, I
> > cannot imagine how this should amount to almost 2 GB of data
> > (1862MB) -
> > this would mean roughly 20k of data per row average - and no way
> > have we
> > got this amount of data - the absolute maximum data per row as
> > defined
> > would be about 30k, I guess, but that would mean that nearly all
> > of our
> > users would use nearly all available space and I know that this
> > is quite
> > far from true. I suspect it may have something to do with
> > emailindex of
> > the txtidx-type... As it's not absolutely necessary, I'll try
> > and drop
> > this column and see what I get...
> >
> > Regards,
> >
> > Markus
> >
> > > -----Ursprüngliche Nachricht-----
> > > Von: Martijn van Oosterhout [mailto:kleptog(at)svana(dot)org]
> > > Gesendet: Mittwoch, 28. August 2002 16:30
> > > An: Markus Wollny
> > > Cc: pgsql-general(at)postgresql(dot)org
> > > Betreff: Re: [GENERAL] Naming-scheme for db-files
> > >
> > >
> > > On Wed, Aug 28, 2002 at 03:54:45PM +0200, Markus Wollny wrote:
> > > > Hi!
> > > >
> > > > As I was just checking disk-usage of a database (PostgreSQL
> > > 7.2.1), I
> > > > stumbled over some files named with a trailing .1 added to
> > the usual
> > > > oid. Now if a table 'example' with oid 12345 exists, what
> > > does the file
> > > > 12345.1 contain exactly? I didn't find anything about
> > > .1-files in the
> > > > documentation...
> > >
> > > Postgres splits files at 1GB. The .1 file would be the second
> > > part of the
> > > file. When that also reaches 1GB, you'll get a .2 file.
> > >
> > > You're doing VACUUM [FULL] regularly, right?
> > >
> > > --
> > > Martijn van Oosterhout <kleptog(at)svana(dot)org>
> > > http://svana.org/kleptog/
> > > > There are 10 kinds of people in the world, those that can do
> > binary
> > > > arithmetic and those that can't.
> > >
> >
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> --
> Martijn van Oosterhout <kleptog(at)svana(dot)org>
> http://svana.org/kleptog/
> > There are 10 kinds of people in the world, those that can do binary
> > arithmetic and those that can't.
>