通过返回额外的行进行分组

Question

我有一个观点，返回 6 列

Select DataSourceName,StartedDateTime, StoppedDateTime , 
    LastStateName, ErrorString , ProtectionGroup 
from [dbo].[vw_RPT_BackupJobsSummaryLast24Hours]

数据返回方式如下

但我想要一个额外的行（在屏幕截图下方）按 DataSourceName 分组并基于 LastStateName（成功或失败）。 如何实现？

我尝试了以下方法，但我需要一些帮助。

select DataSourceName, StartedDateTime, StoppedDateTime , LastStateName, ErrorString
from
(
    select DataSourceName, StartedDateTime, StoppedDateTime, LastStateName, ErrorString
    from [dbo].[vw_RPT_BackupJobsSummaryLast24Hours]
    union
    select DataSourceName, 'Over All Status', case when LastStateName ='Success' then 'Success' else 'Failure' end as Value, '', ''
    from [dbo].[vw_RPT_BackupJobsSummaryLast24Hours]
    group by DataSourceName
) a

Answer 1

我已经这样解决了

select DataSourceName, StartedDateTime, StoppedDateTime , LastStateName, ErrorString
from
(
    select DataSourceName, StartedDateTime, StoppedDateTime, LastStateName, ErrorString
    from [dbo].[vw_RPT_BackupJobsSummaryLast24Hours]
    union
    select DataSourceName, 'Over All Status', case when LastStateName ='Success' then 'Success' else 'Failure' end as Value, case when LastStateName ='Success' then 'Success' else 'Failure' end as Value, ''
    from [dbo].[vw_RPT_BackupJobsSummaryLast24Hours]
    group by DataSourceName, LastStateName
) a