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-- Functions to create and draw histograms with PostgreSQL. | |
-- psql> select * from show_histogram((select histogram(length(email), 0, 32, 6) FROM auth_user limit 100)); | |
-- bucket | range | count | bar | cumbar | cumsum | cumpct | |
-- --------+-------------------------------------+-------+--------------------------------+--------------------------------+--------+------------------------ | |
-- 0 | [0,5.33333333333333) | 1 | | | 1 | 0.00273224043715846995 | |
-- 1 | [5.33333333333333,10.6666666666667) | 5 | = | | 6 | 0.01639344262295081967 | |
-- 2 | [10.6666666666667,16) | 149 | ============================== | ============= | 155 | 0.42349726775956284153 | |
-- 3 | [16,21.3333333333333) | 145 | ========= |