Steve Clark <sclark@netwolves.com> wrote:
> I am confused by how postgres 8,4..13 is sorting my data.
> select * from test order by data;
> data
> ----------
>
> -
> --
> 1
> 11
> 11F
> 1F
> a
> b
> C
> F
> -F
> Feneric
> Generic
> (14 rows)
>
> The first row is a single space, the next row a single -, the next two -- .
> What I don't understand is why the '-F', the ' Feneric' and
> the ' Generic' sort where they do.
>
> I would expect the output to be like this:
>
> data
> ----------
>
> Feneric
> Generic
> -
> --
> -F
> 1
> 11
> 11F
> 1F
> a
> b
> C
> F
> (14 rows)
> lc_collate
> -------------
> en_US.UTF-8
PostgreSQL uses the OS collations. What you are getting matches my
Ubuntu 14.04 machine:
kgrittn@Kevin-Desktop:~/pg/master$ echo $LANG
en_US.UTF-8
kgrittn@Kevin-Desktop:~/pg/master$ sort <<XXX
>
> Feneric
> Generic
> -
> --
> -F
> 1
> 11
> 11F
> 1F
> a
> b
> C
> F
> XXX
-
--
1
11
11F
1F
a
b
C
F
-F
Feneric
Generic
--
Kevin Grittner
EDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
