| Group (cost=4491.31..4492.99 rows=171 width=4) |
| Group Key: in_device |
| -> Sort (cost=4491.31..4492.15 rows=336 width=4) |
| Sort Key: in_device |
| -> Seq Scan on tbl_punch (cost=0.00..4477.21 rows=336 width=4) |
| Filter: ((in_device IS NOT NULL) AND (user_id = 1001)) |