date_extract_m
Extract the month as an integer
Examples:
date_extract_m(to_fixed_timestamp('2017-12-13T00:24:53Z'))
-- Result: "12"
date_extract_m(to_floating_timestamp('2017-12-13T8:24:53'))
-- Result: "12"
date_extract_m(to_fixed_timestamp('2017-12-1T00:24:53+0930'))
-- Result: "11"
a -> number