Slide 11
Slide 11 text
࠷ۙͷ1FSMͱ࠷ۙͷ3VCZ
w SVCZHFNTPSH
IUUQTSVCZHFNTPSHQBHFTEBUB
Version.group("TO_CHAR(created_at, 'YYYY')").count.sort
# => [["2009", 39336],
["2010", 59267],
["2011", 82608],
["2012", 104318],
["2013", 125526],
["2014", 155369],
["2015", 132626],
["2016", 121681],
["2017", 108671],
["2018", 36498]] => 105485 ϖʔε