| HashAggregate (cost=97.83..99.75 rows=110 width=48) |
| Group Key: to_char(start_at, 'YYYY-MM'::text) |
| -> Seq Scan on tbl_pre_sales (cost=0.00..96.73 rows=110 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)) |