Question

我想加入2个查询

- give all database name except tempdb
select * from sys.sysdatabases where dbid <>4

第一个查询示例的输出

    name    dbid    sid mode    status  status2 crdate  reserved    category    cmptlevel   filename    version
master  1   0x01    0   65544   1090520064  2003-04-08 09:13:36.390 1900-01-01 00:00:00.000 0   110 E:\Program Files\Microsoft SQL Server\MSSQL11.SQL372\MSSQL\DATA\master.mdf  706
model   3   0x01    0   65544   1090519040  2003-04-08 09:13:36.390 1900-01-01 00:00:00.000 0   110 E:\Program Files\Microsoft SQL Server\MSSQL11.SQL372\MSSQL\DATA\model.mdf   706
msdb    4   0x01    0   65544   1627390976  2012-02-10 21:02:17.770 1900-01-01 00:00:00.000 0   110 E:\Program Files\Microsoft SQL Server\MSSQL11.SQL372\MSSQL\DATA\MSDBData.mdf    706
UMRdb   5   0x01    0   65544   1627389952  2016-04-01 14:43:41.383 1900-01-01 00:00:00.000 0   100 E:\Program Files\Microsoft SQL Server\MSSQL11.SQL372\MSSQL\Data\UMRdb_data.mdf  706
BMCIMPACT   7   0x01    0   65544   1090519040  2016-08-28 08:11:35.023 1900-01-01 00:00:00.000 0   110 F:\Program Files\Microsoft SQL Server\MSSQL11.SQL372\MSSQL\Data\BMCIMPACT.mdf   706
ETXEXTDTP   8   0xD9B3D21CB279234BAEED922D086A16F1  0   65544   1090519040  2016-04-04 14:19:27.387 1900-01-01 00:00:00.000 0   110 F:\Program Files\Microsoft SQL Server\MSSQL11.SQL372\MSSQL\Data\ ETXEXTDTP.mdf  706
ETXSMILEP   9   0x01    0   65544   1090519040  2016-08-20 05:05:51.913 1900-01-01 00:00:00.000 0   110 F:\Program Files\Microsoft SQL Server\MSSQL11.SQL372\MSSQL\Data\ETXSMILEP_data.mdf  706


--give database name whose backup has been taken
    select bs.database_name,bs.backup_finish_date,bs.user_name,bmf.physical_device_name
    from msdb..backupset bs inner join msdb..backupmediafamily bmf
    on bs.media_set_id=bmf.media_set_id
    where bs.type='D' and bs.backup_finish_date>=GETDATE()-1
    order by bs.backup_finish_date desc

第二次查询的输出

ETXEXTDTP   2018-02-19 23:18:11.000 METNET\maestromet   J:\dump_data\AV-RISCVMSQL372\SQL372\db_dump\AV-RISCVMSQL372$SQL372_ETXEXTDTP_FULL_20180219_231552.bak
BMCIMPACT   2018-02-19 23:12:21.000 METNET\maestromet   J:\dump_data\AV-RISCVMSQL372\SQL372\db_dump\AV-RISCVMSQL372$SQL372_BMCIMPACT_FULL_20180219_230005.bak
msdb    2018-02-19 23:00:05.000 METNET\maestromet   J:\dump_data\AV-RISCVMSQL372\SQL372\db_dump\AV-RISCVMSQL372$SQL372_msdb_FULL_20180219_230005.bak
model   2018-02-19 23:00:05.000 METNET\maestromet   J:\dump_data\AV-RISCVMSQL372\SQL372\db_dump\AV-RISCVMSQL372$SQL372_model_FULL_20180219_230005.bak
master  2018-02-19 23:00:04.000 METNET\maestromet   J:\dump_data\AV-RISCVMSQL372\SQL372\db_dump\AV-RISCVMSQL372$SQL372_master_FULL_20180219_230004.bak

当我们检查一个数据库的第二个查询数据库时尚未备份

我需要加入这两个查询，并且需要数据库名称，这不是第二个查询意味着数据库，其备份未被采取

所以有两个数据库missinbg一个是umrdb而另一个是ETXsMILEP我想在查询中获得这两个名字。

Answer 1

如果我理解正确，您需要使用exists

select * 
from 
    sys.sysdatabases sd 
where 
    dbid <> 4
    and not exists (
        select 
            bs.database_name,bs.backup_finish_date,bs.user_name,bmf.physical_device_name
        from 
            msdb..backupset bs 
            inner join msdb..backupmediafamily bmf
        on bs.media_set_id=bmf.media_set_id
        where 
            bs.type='D' 
            and bs.backup_finish_date>=GETDATE()-1

            and bs.database_name = sd.name
    )

Answer 2

这可能是您所需要的，您的数据库中的左连接与已备份的连接仅选择不存在匹配的连接，这意味着没有进行备份，如下所示：

with cte_backup as 
(
    select bs.database_name,bs.backup_finish_date,bs.user_name,bmf.physical_device_name
    from msdb..backupset bs inner join msdb..backupmediafamily bmf
    on bs.media_set_id=bmf.media_set_id
    where bs.type='D' and bs.backup_finish_date>=GETDATE()-1

) 
select s.* 
from sys.sysdatabases s left join cte_backup c on c.database_name = s.name
where s.dbid <> 4 
      and c.database_name is null -- no backup has been taken

需要使用msdb数据库执行查询连接

2 个答案: