Re: Prefix search on all hstore values

Thanks for the suggestions!

My requirements can be relaxed to full text search, but the problem I had
with that approach is I have strings in Chinese, and postgres doesn't seem
to support it. Calling to_tsvector() on Chinese characters always returns
an empty vector.

A separate table will definitely work, but I was hoping for something more
straightforward. I'll use that approach if necessary though.

On Thu, Nov 28, 2013 at 4:51 PM, Sergey Konoplev <gray(dot)ru(at)gmail(dot)com> wrote:

> On Thu, Nov 28, 2013 at 12:44 AM, Teodor Sigaev <teodor(at)sigaev(dot)ru> wrote:
> > Full-text search has this feature.
> >
> > # select to_tsvector('en_name=>yes, fr_name=>oui'::hstore::text) @@
> 'en:*';
> > ?column?
> > ----------
> > t
> >
> > or (index only keys)
> >
> > select to_tsvector(akeys('en_name=>yes, fr_name=>oui'::hstore)::text) @@
> > 'en:*';
> > ?column?
> > ----------
> > t
> >
> > To speed up this queries you use functional indexes.
>
> It wont work. The OP needs to search by values prefixes, not by any
> separate word in the hstore.
>
> # select to_tsvector('en_name=>"oh yes", fr_name=>oui'::hstore::text) @@
> 'ye:*';
> ?column?
> ----------
> t
>
> --
> Kind regards,
> Sergey Konoplev
> PostgreSQL Consultant and DBA
>
> http://www.linkedin.com/in/grayhemp
> +1 (415) 867-9984, +7 (901) 903-0499, +7 (988) 888-1979
> gray(dot)ru(at)gmail(dot)com
>