From: | hubert depesz lubaczewski <depesz(at)depesz(dot)com> |
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To: | Phoenix Kiula <phoenix(dot)kiula(at)gmail(dot)com> |
Cc: | Postgres General <pgsql-general(at)postgresql(dot)org> |
Subject: | Re: Some frustrations with admin tasks on PGSQL database |
Date: | 2007-08-17 14:14:11 |
Message-ID: | 20070817141411.GA9685@depesz.com |
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Thread: | |
Lists: | pgsql-general |
On Fri, Aug 17, 2007 at 07:49:08PM +0800, Phoenix Kiula wrote:
> I have dropped all indexes/indicises on my table, except for the
> primary key. Still, when I run the query:
> UPDATE mytable SET mycolumn = lower(mycolumn);
can you please check this:
select count(*) from mytable;
select count(*) from mytable where mycolumn ~ '[A-Z]';
and if the second is lower than first make the update:
update mytable set mycolumn = lower(mycolumn) where mycolumn ~ '[A-Z]';
of course if your data contain national characters you have to include
them (upper case only) in this regexp.
depesz
--
quicksil1er: "postgres is excellent, but like any DB it requires a
highly paid DBA. here's my CV!" :)
http://www.depesz.com/ - blog dla ciebie (i moje CV)
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