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Merge pull request #1 from sariogonfer/sariogonfer-patch-2

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Update CDB_QuantileBins.sql
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sariogonfer 2015-04-27 12:05:23 +02:00
commit de418ab36d
1 changed files with 3 additions and 3 deletions
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6
scripts-available/CDB_QuantileBins.sql
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@ -18,15 +18,15 @@ BEGIN
-- get our unique values
SELECT array_agg(e) INTO in_array FROM (SELECT unnest(in_array) e GROUP BY e ORDER BY e ASC) x;
-- get the total size of our row
element_count := array_upper(in_array, 1) - array_lower(in_array, 1);
element_count := array_length(in_array, 1);
break_size := element_count::numeric / breaks;
-- slice our bread
LOOP
IF i > breaks THEN EXIT; END IF;
SELECT e INTO tmp_val FROM ( SELECT unnest(in_array) e LIMIT 1 OFFSET round(break_size * i)) x;
SELECT e INTO tmp_val FROM ( SELECT unnest(in_array) e LIMIT 1 OFFSET round(break_size * i) - 1) x;
reply = array_append(reply, tmp_val);
i := i+1;
END LOOP;
RETURN reply;
END;
$$ language plpgsql IMMUTABLE;
$$ language plpgsql IMMUTABLE;