Re: Searching for pgweb - Mailing list pgsql-www

On 29 Mar 2017 09:49, "Magnus Hagander" <magnus@hagander.net> wrote:

On Fri, Mar 24, 2017 at 8:56 AM, Oleg Bartunov <obartunov@gmail.com> wrote:

On Wed, Mar 22, 2017 at 7:51 PM, Magnus Hagander <magnus@hagander.net> wrote:

Right now our main website search uses plainto_tsquery() to generate the searches.

Should we consider switching that to phraseto_tsquery() now that we have phrase searching?

+1

Also, I suggest to use new parser, which better works _ and -, for example:

1.  
select ts_parse('tsparser', 'btree_gin');
    ts_parse
----------------
 (16,btree_gin)
 (11,btree)
 (12,_)
 (11,gin)
(4 rows)

select ts_parse('default', 'btree_gin');
 ts_parse
-----------
 (1,btree)
 (12,_)
 (1,gin)
(3 rows)

Default parser produces too much noise, just check the difference:

https://postgrespro.ru/search/?area=version&q=btree_gin&product=postgresql&version=9.6

https://www.postgresql.org/search/?u=%2Fdocs%2F9.6%2F&q=btree_gin

 
2. 
select ts_parse('tsparser', 'utc-5');
  ts_parse
------------
 (15,utc-5)
 (11,utc)
 (12,-)
 (9,5)
(4 rows)

select ts_parse('default', 'utc-5');
 ts_parse
----------
 (1,utc)
 (21,-5)
(2 rows)

again, compare

https://postgrespro.ru/search/?area=version&q=utc-5&product=postgresql&version=9.6

https://www.postgresql.org/search/?u=%2Fdocs%2F9.6%2F&q=utc-5

We have also better parsing of email, but I'm not sure we need it on postgres site.

We'll publish soon on github, let me know if you know it.

That sounds interesting. Two questions:

1. Do you have plans for contributing this one for upstream postgres, or is it intended to be run separately?

We would love to do this, but currently it's there

https://github.com/postgrespro/pg_tsparser

2. Would it still make sense to do phrase searching? Sounds like it would? 

Yes, it would.