sqlsql-serversql-server-2008sql-server-2008-r2

Select SQL Server database size


How can I query my SQL server to only get the size of database?

I used this :

use "MY_DB"
exec sp_spaceused

I got this :

database_name   database_size   unallocated space
My_DB           17899.13 MB 5309.39 MB

It returns me several column that I don't need, maybe there is a trick to select database_size column from this stored procedure?

I also tried this code :

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'

It gives me this result:

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

So I wrote this:

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

I got: 1183

So it works but maybe there is a proper way to get this?


Solution

  • Try this one -

    Query:

    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
    

    Output:

    -- 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
    

    Function:

    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
    

    UPDATE 2016/01/22:

    Show information about size, free space, last database backups

    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
    

    Output:

    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