Re: [pg_trgm] Making similarity(?, ?) < ? use an index

On 08.06.2016 12:16, Greg Navis wrote:
> Would this be a better plan then:
>
> 1. Add support for trigram operators.
> 2. Implement `issimilar(lhs, rhs, threshold)`.
> 3. Add `issimilar` to the trigram operator classes.

I think Tom's proposal with composite type is exelent option. If I 
understand correctly it introduce a new function similarity_rhs(). You 
can use it as the following:

SELECT * FROM restaurants WHERE city % similarity_rhs('warsw', 0.4);
SELECT * FROM cinemas WHERE name % similarity_rhs('warsw', 0.2);

This is what you need?

If I understand correctly your plan differs from Tom's proposal. And I 
am afraid that you will do a waste work.

-- 
Artur Zakirov
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Russian Postgres Company