---

SELECT
    f.id AS file_id,
    f.name,
    u.username
FROM dev.query_datasource_file f
JOIN dev.query_datasource d
    ON d.id = f.query_datasource_id
JOIN security."USER" u
    ON u.id = f.user_id
WHERE d.code = 'a33r8zRX'
  AND u.username = 'aa_robot'
ORDER BY f.id DESC
LIMIT 1;