From: | Alvaro Herrera <alvherre(at)commandprompt(dot)com> |
---|---|
To: | Bruce Momjian <bruce(at)momjian(dot)us> |
Cc: | Oleg Bartunov <oleg(at)sai(dot)msu(dot)su>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Michael Paesold <mpaesold(at)gmx(dot)at>, "Joshua D(dot) Drake" <jd(at)commandprompt(dot)com>, Gregory Stark <stark(at)enterprisedb(dot)com>, Teodor Sigaev <teodor(at)sigaev(dot)ru>, pgsql-hackers(at)postgresql(dot)org |
Subject: | Re: default_text_search_config and expression indexes |
Date: | 2007-07-31 02:37:32 |
Message-ID: | 20070731023732.GX7628@alvh.no-ip.org |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-advocacy pgsql-hackers |
Bruce Momjian wrote:
> Bruce Momjian wrote:
> > 3) Remove default_text_search_config and require the
> > configuration to be specified in each function call.
> >
> > If we remove default_text_search_config, it would also make ::tsvector
> > casting useless as well.
>
> OK, I just found a case that I think is going to make #3 a requirement
> (remove default_text_search_config).
>
> How is a CREATE INDEX ... to_tsvector(col) going to restore from a
> pg_dump? I see no way of guaranteeing that the
> default_text_search_config is correct on the restore, and in fact I
> don't think we have any way of knowing the default_text_search_config
> used for the index.
Make pg_dump emit only CREATE INDEX sentences with two-param format. In
fact I think it would make sense to convert internally the one-param
format to two-param, before hitting the catalogs.
This would also solve your problem about usability of WHERE clauses, if
you rewrite the one-param calls to two-params before the optimizer kicks
in.
--
Alvaro Herrera http://www.amazon.com/gp/registry/DXLWNGRJD34J
"Nadie esta tan esclavizado como el que se cree libre no siendolo" (Goethe)
From | Date | Subject | |
---|---|---|---|
Next Message | Bruce Momjian | 2007-07-31 02:47:16 | Re: default_text_search_config and expression indexes |
Previous Message | Decibel! | 2007-07-31 02:18:03 | Fwd: [cbp] New MySQL Journal |
From | Date | Subject | |
---|---|---|---|
Next Message | ITAGAKI Takahiro | 2007-07-31 02:39:29 | Re: Quick idea for reducing VACUUM contention |
Previous Message | Devrim GÜNDÜZ | 2007-07-31 02:25:14 | Re: Machine available for community use |