CREATE TABLE song (f_id VARCHAR2, resolution NUMBER)
CREATE TABLE files (file_size VARCHAR2, formats VARCHAR2, f_id VARCHAR2)

List the file size and format for all songs that have resolution lower than 800.
SELECT DISTINCT T1.file_size, T1.formats FROM files AS T1 JOIN song AS T2 ON T1.f_id = T2.f_id WHERE T2.resolution < 800
SELECT DISTINCT "T1"."file_size", "T1"."formats" FROM "files" "T1" JOIN "song" "T2" ON "T1"."f_id" = "T2"."f_id" AND "T2"."resolution" < 800