SELECT f_id FROM files WHERE formats  =  "mp4" INTERSECT SELECT f_id FROM song WHERE resolution  <  1000
What is the id of the files that are available in the format of mp4 and a resolution smaller than 1000?
SELECT f_id FROM files WHERE formats = `` mp4 '' INTERSECT SELECT f_id FROM song WHERE resolution < 1000
select f_id from files where formats = value intersect select f_id from song where resolution < value
What is the id of the files that are available in the format of mp4 and a resolution smaller than 1000 ?