| HashAggregate (cost=98.02..100.07 rows=117 width=48) |
| Group Key: to_char(start_at, 'YYYY-MM'::text) |
| -> Seq Scan on tbl_pre_sales (cost=0.00..96.85 rows=117 width=52) |
| Filter: ((NOT is_draft) AND (start_at >= '2025-01-01 00:00:00+08'::timestamp with time zone) AND (start_at <= '2025-12-31 23:59:59+08'::timestamp with time zone)) |