int db_col_valid(struct db_filter_col *col)
{
	if (col != NULL && col->state == _DB_STA_VALID && col->filter_cnt > 0)
		return 0;
	return -EINVAL;
}
int db_col_valid(struct db_filter_col *col)
{
	if (col != NULL && col->state == _DB_STA_VALID && col->filter_cnt > 0)
		return 0;
	return -EINVAL;
}