$sql_str = "SELECT file_name FROM contract_apply_files WHERE contract_id = :contract_id AND deleted_at IS NULL";
$sql_str = "SELECT file_name FROM contract_apply_files WHERE contract_id = :contract_id AND deleted_at IS NULL";
$sql_str = "SELECT contract_apply_files.file_name, contract_apply_files.id as id FROM contract_new_apply LEFT JOIN contract_apply_files ON contract_new_apply.id = contract_apply_files.contract_id WHERE contract_new_apply.mid = :contract_id AND contract_apply_files.deleted_at IS NULL";
$sql_str = "SELECT contract_apply_files.file_name, contract_apply_files.id as id FROM contract_new_apply JOIN contract_apply_files ON contract_new_apply.id = contract_apply_files.contract_id WHERE contract_new_apply.mid = :contract_id AND contract_apply_files.deleted_at IS NULL";