query: SELECT Carrier FROM device WHERE Device_ID NOT IN (SELECT Device_ID FROM stock)
question: What-all a carriers of where ain't stock devices anywhere?
query_toks: SELECT Carrier FROM device WHERE Device_ID NOT IN ( SELECT Device_ID FROM stock )
query_toks_no_value: select carrier from device where device_id not in ( select device_id from stock )
question_toks: What-all a carriers of where ain't stock devices anywhere?