【问题标题】:Select SQL Server database size选择 SQL Server 数据库大小
【发布时间】:2013-08-03 13:50:07
【问题描述】:

如何查询我的 sql server 以仅获取数据库的大小?

我用过这个:

use "MY_DB"
exec sp_spaceused

我明白了:

database_name   database_size   unallocated space
My_DB           17899.13 MB 5309.39 MB

它返回了几个我不需要的列,也许有一个技巧可以从这个存储过程中选择 database_size 列?

我也试过这段代码:

SELECT DB_NAME(database_id) AS DatabaseName,
       Name AS Logical_Name,
       Physical_Name,
       (size * 8) / 1024 SizeMB
FROM sys.master_files
WHERE DB_NAME(database_id) = 'MY_DB'

它给了我这个结果:

DatabaseName    Logical_Name    Physical_Name                    SizeMB
MY_DB           MY_DB           D:\MSSQL\Data\MY_DB.mdf          10613
MY_DB           MY_DB_log       D:\MSSQL\Data\MY_DB.ldf          7286

所以我写了这个:

SELECT SUM(SizeMB)
FROM (
    SELECT DB_NAME(database_id) AS DatabaseName,
           Name AS Logical_Name,
           Physical_Name,
           (size * 8) / 1024 SizeMB
    FROM sys.master_files
    WHERE DB_NAME(database_id) = 'MY_DB'
) AS TEMP

我得到:1183

所以它可以工作,但也许有适当的方法来获得它?

【问题讨论】:

  • 同样的结果将与此 'SELECT SUM((size*8)/1024) SizeMB FROM sys.master_files WHERE DB_NAME(database_id) = 'YOUR_DB''
  • @LittlBobbyTables 如何在列中添加 MB?我想要值后的“MB”

标签: sql sql-server sql-server-2008 sql-server-2008-r2


【解决方案1】:

试试这个 -

查询:

SELECT 
      database_name = DB_NAME(database_id)
    , log_size_mb = CAST(SUM(CASE WHEN type_desc = 'LOG' THEN size END) * 8. / 1024 AS DECIMAL(8,2))
    , row_size_mb = CAST(SUM(CASE WHEN type_desc = 'ROWS' THEN size END) * 8. / 1024 AS DECIMAL(8,2))
    , total_size_mb = CAST(SUM(size) * 8. / 1024 AS DECIMAL(8,2))
FROM sys.master_files WITH(NOWAIT)
WHERE database_id = DB_ID() -- for current db 
GROUP BY database_id

输出:

-- my query
name           log_size_mb  row_size_mb   total_size_mb
-------------- ------------ ------------- -------------
xxxxxxxxxxx    512.00       302.81        814.81

-- sp_spaceused
database_name    database_size      unallocated space
---------------- ------------------ ------------------
xxxxxxxxxxx      814.81 MB          13.04 MB

功能:

ALTER FUNCTION [dbo].[GetDBSize] 
(
    @db_name NVARCHAR(100)
)
RETURNS TABLE
AS
RETURN

  SELECT 
        database_name = DB_NAME(database_id)
      , log_size_mb = CAST(SUM(CASE WHEN type_desc = 'LOG' THEN size END) * 8. / 1024 AS DECIMAL(8,2))
      , row_size_mb = CAST(SUM(CASE WHEN type_desc = 'ROWS' THEN size END) * 8. / 1024 AS DECIMAL(8,2))
      , total_size_mb = CAST(SUM(size) * 8. / 1024 AS DECIMAL(8,2))
  FROM sys.master_files WITH(NOWAIT)
  WHERE database_id = DB_ID(@db_name)
      OR @db_name IS NULL
  GROUP BY database_id

2016/01/22 更新:

显示有关大小、可用空间、上次数据库备份的信息

IF OBJECT_ID('tempdb.dbo.#space') IS NOT NULL
    DROP TABLE #space

CREATE TABLE #space (
      database_id INT PRIMARY KEY
    , data_used_size DECIMAL(18,2)
    , log_used_size DECIMAL(18,2)
)

DECLARE @SQL NVARCHAR(MAX)

SELECT @SQL = STUFF((
    SELECT '
    USE [' + d.name + ']
    INSERT INTO #space (database_id, data_used_size, log_used_size)
    SELECT
          DB_ID()
        , SUM(CASE WHEN [type] = 0 THEN space_used END)
        , SUM(CASE WHEN [type] = 1 THEN space_used END)
    FROM (
        SELECT s.[type], space_used = SUM(FILEPROPERTY(s.name, ''SpaceUsed'') * 8. / 1024)
        FROM sys.database_files s
        GROUP BY s.[type]
    ) t;'
    FROM sys.databases d
    WHERE d.[state] = 0
    FOR XML PATH(''), TYPE).value('.', 'NVARCHAR(MAX)'), 1, 2, '')

EXEC sys.sp_executesql @SQL

SELECT
      d.database_id
    , d.name
    , d.state_desc
    , d.recovery_model_desc
    , t.total_size
    , t.data_size
    , s.data_used_size
    , t.log_size
    , s.log_used_size
    , bu.full_last_date
    , bu.full_size
    , bu.log_last_date
    , bu.log_size
FROM (
    SELECT
          database_id
        , log_size = CAST(SUM(CASE WHEN [type] = 1 THEN size END) * 8. / 1024 AS DECIMAL(18,2))
        , data_size = CAST(SUM(CASE WHEN [type] = 0 THEN size END) * 8. / 1024 AS DECIMAL(18,2))
        , total_size = CAST(SUM(size) * 8. / 1024 AS DECIMAL(18,2))
    FROM sys.master_files
    GROUP BY database_id
) t
JOIN sys.databases d ON d.database_id = t.database_id
LEFT JOIN #space s ON d.database_id = s.database_id
LEFT JOIN (
    SELECT
          database_name
        , full_last_date = MAX(CASE WHEN [type] = 'D' THEN backup_finish_date END)
        , full_size = MAX(CASE WHEN [type] = 'D' THEN backup_size END)
        , log_last_date = MAX(CASE WHEN [type] = 'L' THEN backup_finish_date END)
        , log_size = MAX(CASE WHEN [type] = 'L' THEN backup_size END)
    FROM (
        SELECT
              s.database_name
            , s.[type]
            , s.backup_finish_date
            , backup_size =
                        CAST(CASE WHEN s.backup_size = s.compressed_backup_size
                                    THEN s.backup_size
                                    ELSE s.compressed_backup_size
                        END / 1048576.0 AS DECIMAL(18,2))
            , RowNum = ROW_NUMBER() OVER (PARTITION BY s.database_name, s.[type] ORDER BY s.backup_finish_date DESC)
        FROM msdb.dbo.backupset s
        WHERE s.[type] IN ('D', 'L')
    ) f
    WHERE f.RowNum = 1
    GROUP BY f.database_name
) bu ON d.name = bu.database_name
ORDER BY t.total_size DESC

输出:

database_id name                             state_desc   recovery_model_desc total_size   data_size   data_used_size  log_size    log_used_size  full_last_date          full_size    log_last_date           log_size
----------- -------------------------------- ------------ ------------------- ------------ ----------- --------------- ----------- -------------- ----------------------- ------------ ----------------------- ---------
24          StackOverflow                    ONLINE       SIMPLE              66339.88     65840.00    65102.06        499.88      5.05           NULL                    NULL         NULL                    NULL
11          AdventureWorks2012               ONLINE       SIMPLE              16404.13     15213.00    192.69          1191.13     15.55          2015-11-10 10:51:02.000 44.59        NULL                    NULL
10          locateme                         ONLINE       SIMPLE              1050.13      591.00      2.94            459.13      6.91           2015-11-06 15:08:34.000 17.25        NULL                    NULL
8           CL_Documents                     ONLINE       FULL                793.13       334.00      333.69          459.13      12.95          2015-11-06 15:08:31.000 309.22       2015-11-06 13:15:39.000 0.01
1           master                           ONLINE       SIMPLE              554.00       492.06      4.31            61.94       5.20           2015-11-06 15:08:12.000 0.65         NULL                    NULL
9           Refactoring                      ONLINE       SIMPLE              494.32       366.44      308.88          127.88      34.96          2016-01-05 18:59:10.000 37.53        NULL                    NULL
3           model                            ONLINE       SIMPLE              349.06       4.06        2.56            345.00      0.97           2015-11-06 15:08:12.000 0.45         NULL                    NULL
13          sql-format.com                   ONLINE       SIMPLE              216.81       181.38      149.00          35.44       3.06           2015-11-06 15:08:39.000 23.64        NULL                    NULL
23          users                            ONLINE       FULL                173.25       73.25       3.25            100.00      5.66           2015-11-23 13:15:45.000 0.72         NULL                    NULL
4           msdb                             ONLINE       SIMPLE              46.44        20.25       19.31           26.19       4.09           2015-11-06 15:08:12.000 2.96         NULL                    NULL
21          SSISDB                           ONLINE       FULL                45.06        40.00       4.06            5.06        4.84           2014-05-14 18:27:11.000 3.08         NULL                    NULL
27          tSQLt                            ONLINE       SIMPLE              9.00         5.00        3.06            4.00        0.75           NULL                    NULL         NULL                    NULL
2           tempdb                           ONLINE       SIMPLE              8.50         8.00        4.50            0.50        1.78           NULL                    NULL         NULL                    NULL

【讨论】:

  • 执行查询的用户必须至少具有 sysadmin SQL Server 角色,否则返回 NULL。
  • 我有一些 VLDB 会导致 DECIMAL(8,2) 产生“将数字转换为数据类型数字的算术溢出错误”。将 DECIMAL(8,2) 更改为 DECIMAL(12,2) 是解决方法。
  • 不错,在列名中也包含单位会很有用。
  • 也许我做错了什么。我删除了 100 000 行,然后根据这些示例检查了大小。大小仍然约为 14 GB。
  • 真的很有帮助 - 这是有史以来最好的报告
【解决方案2】:

还将结果与以下查询的结果进行比较

EXEC sp_helpdb @dbname= 'MSDB'

它产生类似于以下的结果

有一篇好文章-Different ways to determine free space for SQL Server databases and database files

【讨论】:

  • 所有数据库的日志大小可以通过DBCC SQLPERF(logspace)找到
【解决方案3】:

您可以在this link 之后查看此查询的工作原理。

    IF OBJECT_ID('tempdb..#spacetable') IS NOT NULL 
    DROP TABLE tempdb..#spacetable 
    create table #spacetable
    (
    database_name varchar(50) ,
    total_size_data int,
    space_util_data int,
    space_data_left int,
    percent_fill_data float,
    total_size_data_log int,
    space_util_log int,
    space_log_left int,
    percent_fill_log char(50),
    [total db size] int,
    [total size used] int,
    [total size left] int
    )
    insert into  #spacetable
    EXECUTE master.sys.sp_MSforeachdb 'USE [?];
    select x.[DATABASE NAME],x.[total size data],x.[space util],x.[total size data]-x.[space util] [space left data],
    x.[percent fill],y.[total size log],y.[space util],
    y.[total size log]-y.[space util] [space left log],y.[percent fill],
    y.[total size log]+x.[total size data] ''total db size''
    ,x.[space util]+y.[space util] ''total size used'',
    (y.[total size log]+x.[total size data])-(y.[space util]+x.[space util]) ''total size left''
     from (select DB_NAME() ''DATABASE NAME'',
    sum(size*8/1024) ''total size data'',sum(FILEPROPERTY(name,''SpaceUsed'')*8/1024) ''space util''
    ,case when sum(size*8/1024)=0 then ''divide by zero'' else
    substring(cast((sum(FILEPROPERTY(name,''SpaceUsed''))*1.0*100/sum(size)) as CHAR(50)),1,6) end ''percent fill''
    from sys.master_files where database_id=DB_ID(DB_NAME())  and  type=0
    group by type_desc  ) as x ,
    (select 
    sum(size*8/1024) ''total size log'',sum(FILEPROPERTY(name,''SpaceUsed'')*8/1024) ''space util''
    ,case when sum(size*8/1024)=0 then ''divide by zero'' else
    substring(cast((sum(FILEPROPERTY(name,''SpaceUsed''))*1.0*100/sum(size)) as CHAR(50)),1,6) end ''percent fill''
    from sys.master_files where database_id=DB_ID(DB_NAME())  and  type=1
    group by type_desc  )y'
    select * from #spacetable 
    order by database_name
    drop table #spacetable

【讨论】:

    【解决方案4】:

    非常适合我在 SQL Server 2012

    中计算 SQL 数据库大小
    exec sp_spaceused
    

    【讨论】:

    • 这也适用于 Azure SQL V12(也许 V10 有效,但未经测试)。这应该是与较新版本的 MS SQL Server 一起使用的首选方法。 +1
    • 好的!我也没有在 Azure Vx 上测试过,希望它可以在 Azure 上运行。
    【解决方案5】:
    SELECT      sys.databases.name AS [Database Name],  
            CONVERT(VARCHAR,SUM(size)*8/1024)+' MB' AS [Size]  
         FROM        sys.databases   
         JOIN        sys.master_files  
         ON          sys.databases.database_id=sys.master_files.database_id  
         GROUP BY    sys.databases.name  
         ORDER BY    sys.databases.name  
    

    【讨论】:

      【解决方案6】:

      EXEC sp_spaceused @oneresultset = 1 将所有结果显示在 1 行中

      如果你只执行 'EXEC sp_spaceused' 你会看到两行 在 SQL Server Management Studio v17.9 中工作

      【讨论】:

      • 请在您的代码中添加一些解释,以便其他人学习
      【解决方案7】:
      SELECT
          DB_NAME (database_id) as [Database Name],
          name as [Database File Name],
          [Type] = CASE WHEN Type_Desc = 'ROWS' THEN 'Data File(s)'
                  WHEN Type_Desc = 'LOG'  THEN 'Log File(s)'
                  ELSE Type_Desc END,
          size*8/1024 as 'Size (MB)',
          physical_name as [Database_File_Location]
      FROM sys.master_files
      ORDER BY 1,3
      

      输出

      Database Name               Database File Name              Type                Size (MB)   Database_File_Location
      --------------------------- ------------------------------- ------------------- ----------- ---------------------------------------------------------------
      AdventureWorksDW2017        AdventureWorksDW2017            Data File(s)        136         E:\MSSQL14.MSSQLSERVER\MSSQL\DATA\AdventureWorksDW2017.mdf
      AdventureWorksDW2017        AdventureWorksDW2017_log        Log File(s)         72          E:\MSSQL14.MSSQLSERVER\MSSQL\DATA\AdventureWorksDW2017_log.ldf
      DBA_Admin                   DBA_Admin                       Data File(s)        8           E:\MSSQL14.MSSQLSERVER\MSSQL\DATA\DBA_Admin.mdf
      DBA_Admin                   DBA_Admin_log                   Log File(s)         8           E:\MSSQL14.MSSQLSERVER\MSSQL\DATA\DBA_Admin_log.ldf
      EventNotifications          EventNotifications              Data File(s)        8           E:\MSSQL14.MSSQLSERVER\MSSQL\DATA\EventNotifications.mdf
      EventNotifications          EventNotifications_log          Log File(s)         8           E:\MSSQL14.MSSQLSERVER\MSSQL\DATA\EventNotifications_log.ldf
      master                      master                          Data File(s)        4           E:\MSSQL14.MSSQLSERVER\MSSQL\DATA\master.mdf
      master                      mastlog                         Log File(s)         2           E:\MSSQL14.MSSQLSERVER\MSSQL\DATA\mastlog.ldf
      model                       modeldev                        Data File(s)        8           E:\MSSQL14.MSSQLSERVER\MSSQL\DATA\model.mdf
      model                       modellog                        Log File(s)         8           E:\MSSQL14.MSSQLSERVER\MSSQL\DATA\modellog.ldf
      msdb                        MSDBData                        Data File(s)        19          E:\MSSQL14.MSSQLSERVER\MSSQL\DATA\MSDBData.mdf
      msdb                        MSDBLog                         Log File(s)         13          E:\MSSQL14.MSSQLSERVER\MSSQL\DATA\MSDBLog.ldf
      tempdb                      temp2                           Data File(s)        8           E:\MSSQL14.MSSQLSERVER\MSSQL\DATA\tempdb_mssql_2.ndf
      tempdb                      temp3                           Data File(s)        8           E:\MSSQL14.MSSQLSERVER\MSSQL\DATA\tempdb_mssql_3.ndf
      tempdb                      temp4                           Data File(s)        8           E:\MSSQL14.MSSQLSERVER\MSSQL\DATA\tempdb_mssql_4.ndf
      tempdb                      tempdev                         Data File(s)        8           E:\MSSQL14.MSSQLSERVER\MSSQL\DATA\tempdb.mdf
      tempdb                      templog                         Log File(s)         8           E:\MSSQL14.MSSQLSERVER\MSSQL\DATA\templog.ldf
      

      【讨论】:

        【解决方案8】:

        在 SQL Server 中检查 Azure 和本地的数据库大小-

        方法一——使用‘sys.database_files’系统视图

        SELECT
            DB_NAME() AS [database_name],
            CONCAT(CAST(SUM(
                CAST( (size * 8.0/1024) AS DECIMAL(15,2) )
            ) AS VARCHAR(20)),' MB') AS [database_size]
        FROM sys.database_files;
        

        方法二——使用‘sp_spaceused’系统存储过程

        EXEC sp_spaceused ;
        

        【讨论】:

          【解决方案9】:

          这里已经有很多很好的答案,但值得一提的是一种使用标准报告获取SQL Server Management Studio (SSMS) 的SQL Server 数据库大小 的简单快捷方法。

          要运行您需要的报告:

          1. 右键单击数据库
          2. 转至报告 > 标准报告 > 磁盘使用情况。

          它打印出一份不错的报告:

          其中Total space Reserved是磁盘上数据库的总大小,它包括所有数据文件的大小和所有事务日志文件的大小。

          在后台,SSMS 使用 dbo.sysfiles 视图或 sys.database_files 视图(取决于 MSSQL 的版本)和某种查询来获取 Total space Reserved 值:

          SELECT sum((convert(dec (19, 2),  
          convert(bigint,SIZE))) * 8192 / 1048576.0) db_size_mb
          FROM dbo.sysfiles;
          

          【讨论】:

            【解决方案10】:

            如果你想简单地检查单个数据库的大小,你可以使用 SSMS Gui 来完成

            转到服务器资源管理器->展开它->右键单击数据库->选择属性->在弹出窗口中选择常规选项卡->查看大小

            来源:Check database size in Sql server ( Various Ways explained)

            【讨论】:

              【解决方案11】:

              试试下面的代码。它的代码非常好:

              with CteDbSizes
              as
              (
                  select database_id, type, size * 8.0 / 1024 size
                  from sys.master_files
              )
              select 
                  dbFileSizes.[name] AS DatabaseName,
                  (select sum(size) from CteDbSizes where type = 1 and CteDbSizes.database_id = dbFileSizes.database_id) LogFileSizeMB,
                  (select sum(size) from CteDbSizes where type = 0 and CteDbSizes.database_id = dbFileSizes.database_id) DataFileSizeMB
              from sys.databases dbFileSizes ORDER BY DataFileSizeMB desc
              

              【讨论】:

                【解决方案12】:

                如果您想获得真实数据的大小,您只需要过滤“在线”数据文件。否则,您可以获得与您在 GUI 中看到的大小明显不同的大小。一些鬼|旧的垃圾记录可以在 sys.master_files 中,例如“DEFUNCT”数据文件。

                    with fs
                    as
                    (
                        select database_id, type, size * 8.0 / 1024 size, physical_name
                        from sys.master_files
                        where state_desc = 'ONLINE' -- ONLINE,RESTORING,RECOVERING,RECOVERY_PENDING,SUSPECT,,OFFLINE, DEFUNCT
                    )
                    select 
                        name,
                        (select sum(size) from fs where type = 0 and fs.database_id = db.database_id) DataFileSizeMB,
                        (select sum(size) from fs where type = 1 and fs.database_id = db.database_id) LogFileSizeMB,
                        (select sum(size) from fs where fs.database_id = db.database_id) TotalFileSizeMB
                    from sys.databases db
                    --order by database_id
                    order by TotalFileSizeMB desc
                

                【讨论】:

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