SELECT percentile_cont(ARRAY[.2,.4,.6,.8])
WITHIN GROUP (ORDER BY pop_est_2019) AS quintiles
FROM us_counties_pop_est_2019;
SELECT id, earthquake #>> '{properties, time}' AS time FROM earthquakes ORDER BY id LIMIT 5;
사실 제목은 딱히 안 중요하고
객체-관계 DB라 배열, json 지원 해주는 거 존나 신기한 거 많네
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