| From: | Oleg Bartunov <obartunov(at)gmail(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>, Teodor Sigaev <teodor(at)sigaev(dot)ru>, Dmitry Ivanov <d(dot)ivanov(at)postgrespro(dot)ru>, Pgsql Hackers <pgsql-hackers(at)postgresql(dot)org>, Artur Zakirov <a(dot)zakirov(at)postgrespro(dot)ru>, Alexander Korotkov <a(dot)korotkov(at)postgrespro(dot)ru>, David Steele <david(at)pgmasters(dot)net> |
| Subject: | Re: [PATCH] Phrase search ported to 9.6 |
| Date: | 2016-04-01 17:08:33 |
| Message-ID: | CAF4Au4whjNzPLyBhGTpTPQztc5ik3Mhu7mcWHsv_RESDYzwZUQ@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Fri, Apr 1, 2016 at 5:24 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> Alvaro Herrera <alvherre(at)2ndquadrant(dot)com> writes:
> > Teodor Sigaev wrote:
> >> may be <=>? it isn't used anywhere yet.
> >>
> >> select 'fat'::tsquery <=> 'cat';
> >> select 'fat <=> cat'::tsquery;
> >> select 'fat <3> cat'::tsqyery; -- for non-default distance.
>
> > Dunno. That looks pretty "relationalish".
>
> The existing precedent in the geometric types is to use <->
> as an operator denoting distance. Perhaps <-> amd <3>
> would work here.
>
>
looks like we get consensus about arrows.
> regards, tom lane
>
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