diff --git a/test/CDB_StatsTest.sql b/test/CDB_StatsTest.sql index 571d323..1ba6f94 100644 --- a/test/CDB_StatsTest.sql +++ b/test/CDB_StatsTest.sql @@ -2,15 +2,12 @@ -- http://mathworld.wolfram.com/UniformDistribution.html set client_min_messages to ERROR; -With dist As ( - SELECT random()::numeric As val - FROM generate_series(1,50000) t +WITH dist AS ( + SELECT generate_series(0,10000)::numeric / 10000.0 i ) - -SELECT - -- does random dist values match within 1% of known values - abs(CDB_Kurtosis(array_agg(val)) + 1.20) < 1e-2 As kurtosis, - abs(CDB_Skewness(array_agg(val)) - 0) < 1e-2 As skewness +SELECT + abs(CDB_Kurtosis(array_agg(i)) + 1.2) < 1e-3 AS kurtosis, + abs(CDB_Skewness(array_agg(i))) < 1e-3 AS skewness FROM dist; set client_min_messages to NOTICE;