SQL Server：查询数据库空间使用情况、数据库备份信息

在SQL Server数据库中，如何查询数据库空间使用情况，如何查询数据库备份信息？

1.新建一个获取数据库使用空间的存储过程，代码如下

 use master  
  go  
  create procedure dbo.proc_getdbspaceused  
  as  
 begin  
 set nocount on  
 create table #dbsize(  
      database_id int  
     ,database_name nvarchar(1024)  
     ,size_kb bigint  
     ,space_available_kb bigint  
     ,reserved_kb bigint  
     ,data_kb bigint  
     ,index_kb bigint  
     ,unused_kb bigint  
 )  
   
declare @database_id int  
declare @name nvarchar(1024)  
declare @sql nvarchar(max)  
declare cur cursor for select database_id,name from master.sys.databases order by database_id  
open cur  
fetch next from cur into @database_id,@name  
while @@fetch_status=0  
begin  
set @sql =N'  
 insert into #dbsize  
 select  
    database_id = '+CONVERT(nvarchar(10),@database_id)+',  
    database_name = '''+@name+''',    
    size_kb = ((dbsize + logsize) * 8192 / 1024),    
    space_available_kb = (case when dbsize >= reservedpages then ((dbsize-reservedpages)* 8192/ 1024) else 0 end),  
    reserved_kb = (reservedpages * 8192 / 1024),   
    data_kb = (pages * 8192.0 / 1024),   
    index_kb = ((usedpages - pages)  * 8192 / 1024),   
     unused_kb = ((reservedpages - usedpages)  * 8192 / 1024)  
 from(  
     select   
     dbsize = sum(convert(bigint,case when status & 64 = 0 then size else 0 end)) ,   
     logsize = sum(convert(bigint,case when status & 64 <> 0 then size else 0 end))    
     from ['+@name+'].dbo.sysfiles  
 ) t1,(  
     select   
    reservedpages = sum(a.total_pages),    
    usedpages = sum(a.used_pages),    
     pages = sum(    
         CASE    
          When it.internal_type IN (202,204,211,212,213,214,215,216) Then 0    
          When a.type <> 1 Then a.used_pages    
          When p.index_id < 2 Then a.data_pages Else 0    
        END )    
     from ['+@name+'].sys.partitions p   
     inner join ['+@name+'].sys.allocation_units a on p.partition_id = a.container_id    
     left  join ['+@name+'].sys.internal_tables it on p.object_id = it.object_id    
 )t2' 
 exec(@sql)  
 fetch next from cur into @database_id,@name  
 end  
 close cur  
 deallocate cur  
   
 select * from #dbsize  
 end  
 go  

2. 使用临时表语句块，调用存储过程查询数据库空间使用情况和数据库备份信息：

 --drop table #dbsize  
 --drop table #logsize  
create table #dbsize(  
     database_id int  
    ,database_name nvarchar(1024)  
    ,size_kb bigint  
    ,space_available_kb bigint  
    ,reserved_kb bigint  
    ,data_kb bigint  
    ,index_kb bigint  
    ,unused_kb bigint  
)  
go  
create table #logsize(  
    database_name nvarchar(1024)  
    ,LogSize_MB decimal(24,8)  
    ,LogSpaceUsed decimal(14,8)  
    ,Status tinyint  
)  
go  
insert into #dbsize exec master.dbo.proc_getdbspaceused  
go  
insert into #logsize exec('DBCC sqlperf(logspace)')  
go  
select t0.database_id,t0.database_name  
,t0.size_kb/1024 as [数据库大小MB]  
,t0.space_available_kb/1024 as [可用空间MB]  
,LogSize_MB as [日志大小MB]  
,LogSpaceUsed as [日志已使用%]  
,t1.compatibility_level as [兼容级别]  
,t1.collation_name as [校对规则]  
,t1.recovery_model_desc as [恢复模式]  
,(case t3.type/*btype*/ when 'D' then '完整' when 'I' then '差异' when 'L' then '日志' end)as [备份模式]  
,最近备份时间,备份大小MB,备份耗时Min,备份目录  
from #dbsize t0  
inner join master.sys.databases t1 on t0.database_name=t1.name and t1.state_desc='ONLINE'  
inner join #logsize t2 on t0.database_name=t2.database_name  
--LEFT JOIN (select btype from (values('D'),('I'),('L')) as btype(btype)) t4 on 1=1  
left join (  
    select a.database_name,a.type  
    ,CONVERT(varchar(30),a.backup_start_date,120) AS 最近备份时间  
    ,convert(decimal(18,2),compressed_backup_size/1024/1024.)  as 备份大小MB  
    ,DATEDIFF(MINUTE,backup_start_date,backup_finish_date) as 备份耗时Min  
    ,REVERSE(stuff(REVERSE(physical_device_name),1,CHARINDEX('',REVERSE(physical_device_name))-1,'')) as 备份目录  
    from msdb.dbo.backupset a  
    inner join (  
        select database_name,type,MAX(backup_start_date) as latest_backup_date  
        from msdb.dbo.backupset  
        group by database_name,type  
    )b on a.database_name=b.database_name and a.type=b.type and a.backup_start_date=b.latest_backup_date  
    left join msdb.dbo.backupmediafamily c on a.media_set_id=c.media_set_id  
)t3 on t0.database_name=t3.database_name --and t2.btype=t3.type  
go

3.使用msdb库备份表直接查询（不使用存储过程）数据库备份信息

select tt.database_name [数据库名],
(case tt.type when 'D' then '完整' when 'I' then '差异' when 'L' then '日志' end)as [备份模式],convert(varchar,tt.backup_start_date,121) as [备份开始时间],
convert(varchar,tt.backup_finish_date,121) as [备份完成时间],tt.name [备份名称] 
from msdb.dbo.backupset tt
--where tt.database_name in ('master','model','msdb') 
--and convert(varchar,tt.backup_start_date,121)>='2019-01-01 00:00:00'  
order by tt.database_name,tt.backup_start_date

以上部分资料参考自网络。