CREATE TABLE table_23915973_1 (power_kw VARCHAR2, frequency VARCHAR2)

How many power kw have a frequency of 93.7 mhz?
SELECT COUNT(power_kw) FROM table_23915973_1 WHERE frequency = "93.7 MHz"
SELECT COUNT("power_kw") FROM "table_23915973_1" WHERE "93.7 MHz" = "frequency"