-------------------------查询某个实例下所有数据库最近一次备份的时间---------------------------------;with CTE_Last_Full_Backup(database_name,backup_start_date,rank)as(   select database_name,backup_start_date   ,rank()over(partition by database_name order by backup_start_date desc) as rank   from msdb.dbo.backupset   where type=‘D‘  --type=‘D‘表示全备份，而type=‘L‘表示日志备份，至于差异备份，则是type=‘I‘。),CTE_Last_Log_Backup(database_name,backup_start_date,rank)as(   select database_name,backup_start_date   ,rank()over(partition by database_name order by backup_start_date desc) as rank   from msdb.dbo.backupset   where type=‘L‘),CTE_Last_diff_Backup(database_name,backup_start_date,rank)as(    select database_name,backup_start_date    ,rank()over(partition by database_name order by backup_start_date desc) as rank     from msdb.dbo.backupset    where type=‘L=I‘)select d.name as database_name,f.backup_start_date as last_full_backup,l.backup_start_date as last_log_backup,c.backup_start_date as Last_diff_backup_time ,recovery_model_descfrom sys.databases as dleft join CTE_Last_Full_Backup as f on d.name=f.database_name and f.rank=1left join CTE_Last_Log_Backup as l on d.name=l.database_name and l.rank=1left join CTE_Last_diff_Backup as c on d.name=c.database_name and c.rank=1 order by d.name--------------------------查看某个数据库的备份历史信息------------------------------------------------------select top 100database_name,database_creation_date,backup_start_date,backup_finish_date,case when type=‘D‘ then ‘full_backup‘     when type=‘L‘ then ‘log_backup‘     when type=‘I‘ then ‘differental_backup‘     else ‘NULL‘     end  as backup_type,(backup_size/1024.0/1024.0) as [backup_size(MB)],(compressed_backup_size/1024.0/1024.0) as  [compressed_backup_size(MB)],[user_name]from msdb.dbo.backupset with(nolock)where database_name=‘IPP3_History‘order by  backup_start_date desc