SELECT B FROM pell_disbursements
WHERE rownum >= 6 AND pell_disbursements._meta.file_upload.file = 'pellinst1617.xlsx' AND B IS NOT NULL
ORDER BY B LIMIT 5

/*---------+
| ope_id   |
|----------|
| 100200.0 |
| 100300.0 |
| 100400.0 |
| 100500.0 |
| 100700.0 |
+---------*/