Function switch_cache_db_execute_sql_callback 

pub unsafe extern "C" fn switch_cache_db_execute_sql_callback(
    dbh: *mut switch_cache_db_handle_t,
    sql: *const c_char,
    callback: switch_core_db_callback_func_t,
    pdata: *mut c_void,
    err: *mut *mut c_char,
) -> switch_status_t