Re: russian case-insensitive regexp search not working

Oleg Bartunov wrote:
> alexander,
>
> lc_ctype and lc_collate can be changed only at initdb !
> You need to read localization chapter
> http://www.postgresql.org/docs/current/static/charset.html

Yes, i knew about this, but i thought maybe somehow it can be changed
onthefly.

... (10 minutes later)

Yes, now when initdb done with --locale=ru_RU.UTF-8,
lower('RussianString') gives me 'russianstring', though, case-insensiive
regexp still not working. I guess i'll stick with lower() ~ lower()
construction.

And thanks everybody who replied!

>
>
> Oleg
> On Thu, 12 Jul 2007, alexander lunyov wrote:
>
>> Tom Lane wrote:
>>> alexander lunyov <lan(at)startatom(dot)ru> writes:
>>>> With this i just wanted to say that lower() doesn't work at all on
>>>> russian unicode characters,
>>>
>>> In that case you're using the wrong locale (ie, not russian unicode).
>>> Check "show lc_ctype".
>>
>> db=> SHOW LC_CTYPE;
>> lc_ctype
>> ----------
>> C
>> (1 запись)
>>
>> db=> SHOW LC_COLLATE;
>> lc_collate
>> ------------
>> C
>> (1 запись)
>>
>> Where can i change this? Trying to SET this parameters gives error
>> "parameter "lc_collate" cannot be changed"
>>
>>> Or [ checks back in thread... ] maybe you're using the wrong operating
>>> system. Not so long ago FreeBSD didn't have Unicode locale support at
>>> all; I'm not sure if 6.2 has that problem but it is worth checking.
>>> Does it work for you to do case-insensitive russian comparisons in
>>> "grep", for instance?
>>
>> I put to textfile 3 russian strings with different case of first char
>> and grep'ed them all:
>>
>> # cat > textfile
>> Зеленая
>> Зеленодольская
>> зеленая
>> # grep -i зелен *
>> textfile:Зеленая
>> textfile:Зеленодольская
>> textfile:зеленая
>>
>> So i think system is fine about unicode.
>>
>>
>
> Regards,
> Oleg
> _____________________________________________________________
> Oleg Bartunov, Research Scientist, Head of AstroNet (www.astronet.ru),
> Sternberg Astronomical Institute, Moscow University, Russia
> Internet: oleg(at)sai(dot)msu(dot)su, http://www.sai.msu.su/~megera/
> phone: +007(495)939-16-83, +007(495)939-23-83

--
alexander lunyov
lan(at)startatom(dot)ru