Postgres Pro
Downloads
Home   >   mailing lists

Thread: sort order

sort order

From
"Abraham, Danny"
Date:

On PG 9.0.4, Windows, Encoding and Collate WIN1252  trying to get a database to sort according to the ascii order.

Example:

Select t from test order by t

Should be exactly like

Select t from test order by ascii(t).

 

Can it be done? How?

 

Thanks

 

Danny

               

Re: sort order

From
Adrian Klaver
Date:
On Sunday, December 11, 2011 8:17:41 am Abraham, Danny wrote:
> On PG 9.0.4, Windows, Encoding and Collate WIN1252  trying to get a
> database to sort according to the ascii order. Example:
> Select t from test order by t
> Should be exactly like
> Select t from test order by ascii(t).
>
> Can it be done? How?

Not after a database has been created.

For more info see:
http://www.postgresql.org/docs/9.0/interactive/locale.html
In particular LC_COLLATE.

>
> Thanks
>
> Danny

--
Adrian Klaver
adrian.klaver@gmail.com

Re: sort order

From
"Abraham, Danny"
Date:
This is exactly what I am trying to do -
To find a CREATE DATABASE statement that will produce a database that has a binary sorting.

Thanks

Danny

-----Original Message-----
From: Adrian Klaver [mailto:adrian.klaver@gmail.com]
Sent: Monday, December 12, 2011 5:53 PM
To: pgsql-general@postgresql.org
Cc: Abraham, Danny
Subject: Re: [GENERAL] sort order

On Sunday, December 11, 2011 8:17:41 am Abraham, Danny wrote:
> On PG 9.0.4, Windows, Encoding and Collate WIN1252  trying to get a
> database to sort according to the ascii order. Example:
> Select t from test order by t
> Should be exactly like
> Select t from test order by ascii(t).
>
> Can it be done? How?

Not after a database has been created.

For more info see:
http://www.postgresql.org/docs/9.0/interactive/locale.html
In particular LC_COLLATE.

>
> Thanks
>
> Danny

--
Adrian Klaver
adrian.klaver@gmail.com

Re: sort order

From
Tom Lane
Date:
"Abraham, Danny" <danny_abraham@bmc.com> writes:
> This is exactly what I am trying to do -
> To find a CREATE DATABASE statement that will produce a database that has a binary sorting.

Setting its LC_COLLATE to "C" ought to do that.

BTW, as of 9.1 you can control this at finer granularity than database
level, see the COLLATE clause.

            regards, tom lane

Re: sort order

From
Adrian Klaver
Date:
On Monday, December 12, 2011 7:55:37 am Abraham, Danny wrote:
> This is exactly what I am trying to do -
> To find a CREATE DATABASE statement that will produce a database that has a
> binary sorting.

http://www.postgresql.org/docs/9.0/interactive/sql-createdatabase.html
CREATE DATABASE name
    [ [ WITH ] [ OWNER [=] user_name ]
           [ TEMPLATE [=] template ]
           [ ENCODING [=] encoding ]
           [ LC_COLLATE [=] lc_collate ]
           [ LC_CTYPE [=] lc_ctype ]
           [ TABLESPACE [=] tablespace ]
           [ CONNECTION LIMIT [=] connlimit ] ]

Be sure and read the Notes section at the bottom for important caveats.

>
> Thanks


--
Adrian Klaver
adrian.klaver@gmail.com

Re: sort order

From
"Abraham, Danny"
Date:
Thanks a lot.

Worked fine with .....

CREATE DATABASE danny
Template template0
LC_CTYPE = 'C'
LC_COLLATE = 'C';

-----Original Message-----
From: Tom Lane [mailto:tgl@sss.pgh.pa.us]
Sent: Monday, December 12, 2011 6:07 PM
To: Abraham, Danny
Cc: Adrian Klaver; pgsql-general@postgresql.org
Subject: Re: [GENERAL] sort order

"Abraham, Danny" <danny_abraham@bmc.com> writes:
> This is exactly what I am trying to do -
> To find a CREATE DATABASE statement that will produce a database that has a binary sorting.

Setting its LC_COLLATE to "C" ought to do that.

BTW, as of 9.1 you can control this at finer granularity than database
level, see the COLLATE clause.

            regards, tom lane