Re: [PATCH] Phrase search ported to 9.6

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>
Cc: Teodor Sigaev <teodor(at)sigaev(dot)ru>, Oleg Bartunov <obartunov(at)gmail(dot)com>, 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 14:24:13
Message-ID: 11634.1459520653@sss.pgh.pa.us
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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.

regards, tom lane

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