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den-crane/CH_percentage_from_total

Created April 10, 2019 18:30
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CH percentage from total using groupArray
Raw
CH_percentage_from_total
SELECT grp, ga.1 key, ga.2 value, vsum, value / vsum*100 percent
FROM (SELECT grp, groupArray(tuple (key,value)) ga, SUM(value) vsum
FROM (SELECT 1 grp,'k1' key,33 value UNION ALL SELECT 1, 'k2', 11 UNION ALL SELECT 2,'k1', 0 UNION ALL SELECT 2,'k2',1)
GROUP BY grp) Array JOIN ga
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