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Paul has 18 years experience with Microsoft SQL Server. He has worked in the roles of production DBA, database developer, database architect, applications developer, business intelligence and data warehouse developer, and instructor for students aspiring for MCDBA certification. He has performed numerous data migrations and supported large databases (3 Terabyte, 1+ billion rows) with high transactions. He is a member of PASS, blogs about lessons learned from a developer’s approach to SQL Server administration, and has been the president of the Boulder SQL Server Users’ Group from January 2009 to present.

Tuesday, February 2, 2016

vwBackupHistory (dependencies included)

I've been asked to produce the code for vwBackupHistory with no dependencies. 

This is created in tempdb but you can optionally put it into your Admin (or similarly named) database. 

Use this as a first check when you need to locate backup files.



/*    DATE        AUTHOR            REMARKS
      2/2/16      PPaiva            Initial creation.

      DESCRIPTION
            Use this code to get a historical list of backups on
                  this instance.
            First query result is Last backup of each database.

      USAGE
            -- Last backup of each database
            SELECT *
            FROM vwBackupHistory         
            WHERE Num = 1
            ORDER BY DateStarted desc

            -- Databases NEVER backed up
            SELECT s.Name, s.state_desc State, S.recovery_model_desc RecoveryModel
            FROM sys.databases s
            LEFT JOIN (SELECT DB FROM vwBackupHistory WHERE Num = 1) as v
                  ON v.DB = s.name
            WHERE v.DB Is null
            ORDER BY s.name

            -- Last backups, all databases
            SELECT *
            FROM vwBackupHistory         
            ORDER BY DateStarted desc

            -- Last 5 backups per DB per Type per Path 
            SELECT *
            FROM vwBackupHistory
            WHERE Num <= 5
                  AND IsSysDB = 0
            ORDER BY Instance, DB, DateStarted desc

*/
Use tempdb
-- Use Admin                  -- put this code in your DBA database if you have one
go
IF object_id('dbo.udfGetFilenameOnly') Is Not Null
      DROP FUNCTION dbo.udfGetFilenameOnly
go


CREATE FUNCTION dbo.udfGetFilenameOnly(
      @In varchar(500)
      )
RETURNS varchar(300)
AS
/*    DATE        AUTHOR            REMARKS
      2/2/16      PPaiva            Initial creation.


      USAGE
            SELECT dbo.udfGetFilenameOnly('D:\Program Files\Microsoft SQL Server\Logs\Admin_Log.LDF')
            SELECT dbo.udfGetFilenameOnly('Admin_Log.ldf')

*/

BEGIN
      DECLARE @Out varchar(300),
                  @Pos smallint
           
      -- Get position of last backslash
      SET @Pos = CharIndex('\', Reverse(@In))

      IF @Pos > 1
            BEGIN
                  SET @Pos = Len(@In) - @Pos               
                  SET @Out = Substring(@In, @Pos + 2, 500)
            END
     
      ELSE
            SET @Out = @In


      RETURN @Out

END
go

IF object_id('dbo.udfFormatInteger') Is Not Null
      DROP FUNCTION dbo.udfFormatInteger
go

CREATE FUNCTION dbo.udfFormatInteger(
      @In bigint
      )
RETURNS varchar(20)
AS
/*    DATE              AUTHOR            REMARKS   
      2/22/16           PPaiva            Initial creation.
    
      DESCRIPTION
            Formats a given integer with commas.
                  Examples:
                              IN                OUT
                              123               123
                            12345            12,345
                           -54321           -54,321

      USAGE
            SELECT dbo.udfFormatInteger(1234567890)
            SELECT dbo.udfFormatInteger(12345)
            SELECT dbo.udfFormatInteger(-54321)
            SELECT dbo.udfFormatInteger(0)
*/

BEGIN
      DECLARE @Out varchar(20),
                  @sIn varchar(20),
                  @Balance varchar(20),
                  @CurrTextLen smallint,
                  @IsNegative bit

      IF @In < 0
            BEGIN
                  SET @IsNegative = 1
                  SET @In = Abs(@In)
            END

      SET @sIn = Convert(varchar, @In)
      SET @CurrTextLen = Len(@sIn)
      SET @Out = ''
      SET @Balance = @sIn

      IF @CurrTextLen > 3
            BEGIN
                  WHILE 1 = 1
                        BEGIN
                              SET @Out = ',' + Right(@Balance, 3) + @Out
                              SET @Balance = Substring(@sIn, 1, @CurrTextLen - 3)

                              SET @CurrTextLen = Len(@Balance)
                              IF @CurrTextLen > 3
                                    CONTINUE
                              ELSE
                                    BEGIN
                                          SET @Out = @Balance + @Out
                                          BREAK
                                    END 
                        END
            END

      ELSE
            SET @Out = @sIn

      IF @IsNegative = 1
            SET @Out = '-' + @Out

      RETURN @Out

END
go

IF object_id('dbo.udfGetPathOnly') Is Not Null
      DROP FUNCTION dbo.udfGetPathOnly
go

CREATE FUNCTION dbo.udfGetPathOnly(
      @In varchar(1000)
)
RETURNS varchar(1000)
AS
/*    DATE        AUTHOR            REMARKS
      2/22/16     PPaiva            Initial creation.


      DESCRIPTION
            Returns the path only, with a trailing backslash. 

      USAGE
            SELECT dbo.udfGetPathOnly('C:\Windows\Notepad.exe')
            SELECT dbo.udfGetPathOnly('C:\Program Files\Microsoft SQL Server\MSSQL.1\MSSQL\Data\tempdb.mdf')
            SELECT dbo.udfGetPathOnly('tempdb.ldf')
            SELECT dbo.udfGetPathOnly('C:\asdf')
            SELECT dbo.udfGetPathOnly('C:')
            SELECT dbo.udfGetPathOnly('Z:')

*/
BEGIN
      DECLARE @Out varchar(300),
                  @PosSlash smallint,
                  @PosDot smallint


      -- Get position of last backslash
      SET @PosSlash = CharIndex('\', Reverse(@In))
      -- Get position of last dot
      SET @PosDot = CharIndex('.', Reverse(@In))

      IF @PosDot > 0
            SET @PosDot = Len(@In) - @PosDot + 1

      IF @PosSlash > 0
            BEGIN
                  SET @PosSlash = Len(@In) - @PosSlash + 1
                  IF @PosDot = 0
                        SET @Out = @In
                  ELSE
                        SET @Out = Left(@In, @PosSlash)
            END

      ELSE
            IF Len(@In) = 2 AND Right(@In, 1) = ':'
                  SET @Out = @In + '\'


      RETURN @Out

END
go



IF Object_ID('dbo.vwBackupHistory') Is Not Null
      DROP VIEW dbo.vwBackupHistory
GO

CREATE VIEW dbo.vwBackupHistory
AS
/*    DATE        AUTHOR            REMARKS
      2/22/16     PPaiva            Initial creation.
    
      -- Last 5 backups per DB per Type per Path 
      SELECT *
      FROM vwBackupHistory
      WHERE Num <= 5
        AND IsSysDB = 0
      ORDER BY Instance, DB, DateStarted desc

      -- All history
      SELECT *
      FROM vwBackupHistory
      ORDER BY DateStarted desc

      -- Exclude log backups
      SELECT *
      FROM vwBackupHistory
      WHERE BackupType <> 'Log'
      ORDER BY DateFinished desc,   DB

      -- Num backups per Database/BackupType
      SELECT Instance, DB, BackupType, RecoveryModel, Path, SoftwareName, Count(*) Qty
      FROM vwBackupHistory
      GROUP BY Instance, DB, BackupType, RecoveryModel, Path, SoftwareName
      ORDER BY Instance, DB, BackupType, RecoveryModel, Path, SoftwareName

*/
SELECT  ROW_NUMBER() OVER (PARTITION BY  b.database_name, b.Type, b.Recovery_Model ORDER BY backup_start_date desc) Num,
            ServerProperty('ServerName') Instance,
        b.database_name DB,
        CASE b.type
              WHEN 'D' THEN 'Database'
              WHEN 'L' THEN 'Log'
              WHEN 'I' THEN 'Differential Database'
              WHEN 'F' THEN 'File or FileGroup'
              WHEN 'G' THEN 'Differential File'
              WHEN 'P' THEN 'Partial'
              WHEN 'Q' THEN 'Differential Partial'
              WHEN Null THEN 'Null'
              ELSE 'Need to define in view'
                    END AS BackupType,
        b.recovery_model RecoveryModel,
        b.backup_start_date DateStarted,
              DATEDIFF(second, b.backup_start_date, b.backup_finish_date) BackupSecs,
              DATEDIFF(minute, b.backup_start_date, b.backup_finish_date) BackupMins,
              dbo.udfFormatInteger((b.backup_size /1000000.)) SizeMBFmt,
            CASE WHEN b.database_name In ('master', 'model', 'msdb', 'tempdb', 'distribution')
                        THEN 1 ELSE 0
                              END IsSysDB,
              dbo.udfGetFilenameOnly(f.physical_device_name) Filename,
              dbo.udfGetPathOnly(f.physical_device_name) Path,
            bms.is_compressed IsCompressed,                             -- remove column for 2005 and lower
            b.compressed_backup_size CompressedSizeBytes,   -- remove column for 2005 and lower
             (Convert(decimal(4,1), (100 * (b.compressed_backup_size / b.backup_size))) ) PercComp,  -- remove column for 2005 and lower
        b.backup_size SizeBytes,
        b.is_copy_only IsCopy,
        b.is_damaged IsDamaged,
        b.description,
        b.expiration_date ExpDate,
        f.physical_device_name PathFilename, 
        b.name AS BackupSetName,
        f.logical_device_name LogicalDeviceName,
        fg.name FileGroup,
        bms.software_name SoftwareName,
        b.backup_finish_date DateFinished
FROM msdb.dbo.backupmediafamily  f
JOIN msdb.dbo.backupset b
      ON f.media_set_id = b.media_set_id
JOIN msdb.dbo.backupmediaset bms
      ON bms.media_set_id = b.media_set_id
JOIN msdb.dbo.backupfilegroup fg
      ON fg.backup_set_id = b.backup_set_id
go

-- Last backups of each database
SELECT *
FROM vwBackupHistory         
WHERE Num = 1
ORDER BY DateStarted desc



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