On Tue, 22 Jul 2003, Ken Schenke wrote:
> Does the PostgreSQL string comparison operator remove embedded spaces in
> a string before comparing? Here is a query I'm issuing (notice the
> space between A and C in the first string):
>
> select version();
> select ('A C' < 'AB') as result;
>
> the result that comes back is:
>
> version
>
> -------------------------------------------------------------------------------------------------------
> PostgreSQL 7.3.3 on i686-pc-linux-gnu, compiled by GCC gcc (GCC) 3.2.2
> 20030222 (Red Hat Linux 3.2.2-5)
>
> result
> ------
> f
>
> I searched the list archives and could not find a mention of this.
> Shouldn't the result of the comparison be true, not false?
That depends on the locale you have set for collation. If it's en_US
(for example) spaces and some symbols don't act like you'd expect.
'AB' < 'A B' < 'AC' < 'A C' I believe.