QUERY PLAN
HashAggregate (cost=377.07..379.38 rows=132 width=48)
Group Key: to_char(arrived_at, 'YYYY-MM'::text)
-> Seq Scan on tbl_implement_records (cost=0.00..375.75 rows=132 width=52)
Filter: ((NOT is_draft) AND (arrived_at >= '2026-01-01 00:00:00+08'::timestamp with time zone) AND (arrived_at <= '2026-12-31 23:59:59+08'::timestamp with time zone))