指定了 RESTORE FILEGROUP='%1'，但备份集中不存在该文件组的所有文件。缺少文件 '%2'。RESTORE 将继续，但如果要还原所有文件，必须还原其他备份集。

RESTORE FILEGROUP="%1" was specified, but not all of its files are present in the backup set. File "%2" is missing. RESTORE will continue, but if you want all files to be restored, you must restore other backup sets.