Re: Per-column collation

Itagaki Takahiro <itagaki.takahiro@gmail.com>

From: Itagaki Takahiro <itagaki.takahiro@gmail.com>
To: Peter Eisentraut <peter_e@gmx.net>
Cc: pgsql-hackers@postgresql.org
Date: 2010-12-07T02:46:24Z
Lists: pgsql-hackers
On Sun, Dec 5, 2010 at 01:04, Peter Eisentraut <peter_e@gmx.net> wrote:
> Here is an updated patch to address the issues discussed during this
> commitfest.

I found another issue in the patch; ILIKE in WHERE clause doesn't work.
It was surprising because LIKE in WHERE clause and ILIKE in SELECT list
works expectedly.
 - SELECT * FROM pg_class WHERE relname LIKE 'pg%'
 - SELECT relname ILIKE 'pg%' FROM pg_class;

----
postgres=# SELECT name, setting FROM pg_settings
 WHERE name IN ('lc_ctype', 'lc_collate', 'server_encoding');
      name       | setting
-----------------+---------
 lc_collate      | C
 lc_ctype        | C
 server_encoding | UTF8
(3 rows)

postgres=# SELECT * FROM pg_class WHERE relname ILIKE 'pg%';
ERROR:  no collation was derived
----

-- 
Itagaki Takahiro