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added more flexible output values

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This commit is contained in:
Andy Eschbacher 2015-06-24 11:03:16 -04:00
parent d124776c4e
commit 97140b17c9
1 changed files with 7 additions and 4 deletions
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11
scripts-available/CDB_DistinctMeasure.sql
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@ -5,11 +5,11 @@
--
--
CREATE OR REPLACE FUNCTION CDB_DistinctMeasure ( in_array text[], threshold numeric DEFAULT 0.90 ) RETURNS boolean as $$
CREATE OR REPLACE FUNCTION CDB_DistinctMeasure ( in_array text[], threshold numeric DEFAULT null ) RETURNS numeric as $$
DECLARE
element_count INT4;
maxval numeric;
passes boolean;
passes numeric;
BEGIN
SELECT count(e) INTO element_count FROM ( SELECT unnest(in_array) e ) x;
@ -35,8 +35,11 @@ BEGIN
SELECT max(cumsum) maxval FROM b'
INTO maxval
USING element_count, in_array;
passes = (maxval >= threshold);
IF threshold is null THEN
passes = maxval;
ELSE
passes = CASE WHEN (maxval >= threshold) THEN 1 ELSE 0 END;
END IF;
RETURN passes;
END;