CREATE TABLE table_34051 ("Callsign" CLOB, "Area served" CLOB, "Frequency" CLOB, "Band" CLOB, "On-air ID" CLOB, "Purpose" CLOB)

What is the On-air ID with the frequency of 105.9, and purpose of commercial?
SELECT "On-air ID" FROM table_34051 WHERE "Frequency" = '105.9' AND "Purpose" = 'commercial'
SELECT "On-air ID" FROM "table_34051" WHERE "Frequency" = '105.9' AND "Purpose" = 'commercial'