what is the callsign whtat uses 7bu?
CREATE TABLE table_name_9 (callsign VARCHAR, on_air_id VARCHAR)
SELECT callsign FROM table_name_9 WHERE on_air_id = "7bu"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_name_9 (callsign VARCHAR, on_air_id VARCHAR) Question: what is the callsign whtat uses 7bu? [/INST] SELECT callsign FROM table_name_9 WHERE on_air_id = "7bu" </s>