خطای پایگاه‌دادهٔ وردپرس : [Incorrect parameter count in the call to native function 'radians']
SELECT properties.*, ( 3959 * acos( cos(radians(41.048194,28)) * cos(radians(properties.lat)) * cos( radians(properties.lng) - radians(28.9879158) ) + sin(radians((41.048194,28))) * sin(radians(properties.lat)) ) ) AS distance FROM wp_st_properties AS properties WHERE post_id = 12394 HAVING distance <= 20