Windowing Functions: Partition By

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February 15, 2016

SELECT
  num,
  COUNT(num) OVER (PARTITION BY num) AS partion_count,
  COUNT(num) OVER () AS plain_count
FROM 
  ( SELECT 2 AS num),
  ( SELECT 4 AS num),
  ( SELECT 3 AS num),
  ( SELECT 1 AS num),
  ( SELECT 1 AS num),