Re: [WIP] patch - Collation at database level

On Wed, Jul 02, 2008 at 07:22:10PM +0100, Gregory Stark wrote:
> > Because the SQL spec says so.  Also, if we don't put them in schemas,
> > we have no nice way to distinguish built-in and user-defined collations,
> > which creates a problem for pg_dump.
> 
> Out of curiosity, what is a "user-defined collation"? Are there SQL statements
> to go around declaring what order code points should be sorted in? That seems
> like it would be... quite tedious!

Not that we'll ever use it, but ICU for example allows users to say:
"use collation X but move this code point somewhere else", essentially
allowing users tweak the collation on a small scale. In any case,
whatever collation library is used, we're unlikely to predefine every
possible collation in the system, there's too many (assuming they're
denumerable).

Have a niceday,
-- 
Martijn van Oosterhout   <kleptog@svana.org>   http://svana.org/kleptog/
> Please line up in a tree and maintain the heap invariant while 
> boarding. Thank you for flying nlogn airlines.