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@xxxxxxxxx]
> Gesendet: Donnerstag, 29. August 2002 01:18
> An: Markus Wollny
> Cc: pgsql-general@xxxxxxxxxxxxxx
> 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@xxxxxxxxxxxxxx 
> >     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@xxxxxxxxx]
> >     > Gesendet: Mittwoch, 28. August 2002 16:30
> >     > An: Markus Wollny
> >     > Cc: pgsql-general@xxxxxxxxxxxxxx
> >     > 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@xxxxxxxxx>  
> >     > 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@xxxxxxxxx>   
> 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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