implode-exampe-wgoby.md
=> SELECT itemkey AS key, IMPLODE(itemprice) WITHIN GROUP (ORDER BY itemprice) AS prices
FROM filtered GROUP BY itemkey ORDER BY itemkey;
key | prices
-----+-------------------
123 | ["14.99"]
345 | ["14.99","35.99"]
567 | ["18.99","27.99"]
(3 rows)