无法执行数据库 "%1" 的差异备份,因为不存在当前数据库备份。请去掉 WITH DIFFERENTIAL 选项后重新发出 BACKUP DATABASE 以执行数据库的完整备份。
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English version
Cannot perform a differential backup for database "%1", because a current database backup does not exist. Perform a full database backup by reissuing BACKUP DATABASE, omitting the WITH DIFFERENTIAL option.