11 lines
392 B
PL/PgSQL
11 lines
392 B
PL/PgSQL
CREATE OR REPLACE FUNCTION hot_rank(score numeric, published timestamp without time zone)
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RETURNS integer
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AS $$
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BEGIN
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-- hours_diff:=EXTRACT(EPOCH FROM (timezone('utc',now()) - published))/3600
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RETURN floor(10000 * log(greatest(1, score + 3)) / power(((EXTRACT(EPOCH FROM(timezone('utc', now()) - published)) / 3600) + 2), 1.8))::integer;
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END;
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$$
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LANGUAGE plpgsql
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IMMUTABLE;
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