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

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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
Postgres Professional: http://www.postgrespro.com
Russian Postgres Company


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