skreebydba

sp_AutomateDatabaseRestores, now with STOPAT! I’ve added parameter @stopat to allow generation and execution of a RESTORE statement WITH STOPAT. Check the Presentation Slides and Scripts link for a script to demonstrate this functionality.

[sourcecode language=”SQL” collapse=”true” title=”sp_AutomateDatabaseRestores”]
USE [master]
GO

/****** Object: StoredProcedure [dbo].[sp_automateDBRestores] Script Date: 2/16/2014 8:48:07 PM ******/
IF EXISTS(SELECT 1 FROM master.sys.objects WHERE name = ‘sp_automateDBRestores’)
BEGIN

DROP PROCEDURE [dbo].[sp_automateDBRestores]

END
GO

/****** Object: StoredProcedure [dbo].[sp_automateDBRestores] Script Date: 2/16/2014 8:48:07 PM ******/
SET ANSI_NULLS ON
GO

SET QUOTED_IDENTIFIER ON
GO

CREATE PROCEDURE [dbo].[sp_automateDBRestores]
@sourcedbname SYSNAME,
@restoredbname SYSNAME,
@droprestoredb TINYINT = 1,
@noexec TINYINT = 0,
@stopat DATETIME = NULL
AS

SET NOCOUNT ON

BEGIN TRY

–Drop temp tables if they exist
IF OBJECT_ID(‘tempdb..#backupfiles’) IS NOT NULL
BEGIN

DROP TABLE #backupfiles

END

IF OBJECT_ID(‘tempdb..#databasefiles’) IS NOT NULL
BEGIN

DROP TABLE #databasefiles

END

–Create temp tables
CREATE TABLE #backupfiles
(backupstartdate DATETIME
,backupfinishdate DATETIME
,physicalfilename VARCHAR(2000)
,backuptype CHAR(4))

CREATE TABLE #databasefiles
(DatabaseName SYSNAME
,LogicalName SYSNAME
,PhysicalName VARCHAR(2000)
,filetype TINYINT)

–Declare local variables
DECLARE @filecount SMALLINT
DECLARE @fullfilecount SMALLINT
DECLARE @loopcount SMALLINT
DECLARE @datafileloopcount SMALLINT
DECLARE @backuploopcount SMALLINT
DECLARE @backupfile VARCHAR(2000)
DECLARE @sqlstr VARCHAR(MAX)
DECLARE @backupfiletype CHAR(4)
DECLARE @datafilecount SMALLINT
DECLARE @logfilecount SMALLINT
DECLARE @logbackupcount SMALLINT
DECLARE @diffbackupcount SMALLINT
DECLARE @datafile VARCHAR(2000)
DECLARE @moveparm VARCHAR(2000)
DECLARE @fromstatement VARCHAR(2000)
DECLARE @logfile SYSNAME
DECLARE @physlogfile VARCHAR(2000)
DECLARE @physdatafile VARCHAR(2000)
DECLARE @fullbackupdate DATETIME
DECLARE @logbackupdate DATETIME
DECLARE @logbackuplimit DATETIME
DECLARE @errormessage VARCHAR(1000)

–Drop the restored database if it exists and @droprestoredb = 1
IF EXISTS(SELECT 1 FROM sys.databases WHERE name = @restoredbname) AND @droprestoredb = 1
BEGIN

SET @sqlstr = ‘DROP DATABASE ‘ + @restoredbname
EXEC (@sqlstr)

END

–Initialize variables
SET @moveparm = ‘ WITH’
SET @fromstatement = ‘ FROM ‘
SET @loopcount = 1
SET @datafileloopcount = 1
SET @backuploopcount = 1

–Build dynamic SQL to get a list of data and log files for the source database
SET @sqlstr = ‘INSERT INTO #databasefiles SELECT ‘ + ”” + @sourcedbname + ”” + ‘ AS DatabaseName, name, physical_name, type
FROM ‘ + @sourcedbname + ‘.sys.database_files’

–Execute dynamic SQL to return data and log files for the source database
EXEC (@sqlstr)

–Get counts of data files and log files
SELECT @datafilecount = COUNT(*) FROM #databasefiles WHERE filetype = 0
SELECT @logfilecount = COUNT(*) FROM #databasefiles WHERE filetype = 1

IF @logfilecount > 1
BEGIN

RAISERROR (‘You have more than one log file, which is a really bad idea. No backup for you. See this link for more information. http://www.sqlskills.com/blogs/paul/multiple-log-files-and-why-theyre-bad/’, — Message text.
16, — Severity.
1 — State.
);

END
–Get the logical and physical log file names
SELECT @logfile = LogicalName, @physlogfile = REPLACE(PhysicalName,’.ldf’,’_testrestore.ldf’)
FROM #databasefiles
WHERE filetype = 1

SELECT @physlogfile AS PhysLogFile

–If the database contains one data file, build the MOVE clause for a single file
IF @datafilecount = 1
BEGIN

SELECT @datafile = LogicalName, @physdatafile = REPLACE(PhysicalName,’.mdf’,’_testrestore.mdf’)
FROM #databasefiles
WHERE filetype = 0

SELECT @physdatafile AS PhysDataFile

SET @moveparm = @moveparm + ‘ MOVE ‘ + ”” + @datafile + ”” + ‘ TO ‘ + ”” + @physdatafile + ”” + ‘,’ + ‘ MOVE ‘ + ”” + @logfile + ”” + ‘ TO ‘ + ”” + @physlogfile + ”” + ‘, NORECOVERY’
END
ELSE
–If the database contains more than one data file, loop through the list of files and build a multi-file MOVE statement
IF @datafilecount > 1
BEGIN

–SELECT @datafileloopcount, @datafilecount
WHILE @datafileloopcount <= @datafilecount
BEGIN

–SELECT TOP (1) LogicalName, REPLACE(PhysicalName,@sourcedbname,@restoredbname) FROM #databasefiles WHERE filetype = 0
SET @physdatafile = (SELECT TOP (1) REPLACE(PhysicalName,’.mdf’,’_testrestore.mdf’) FROM #databasefiles WHERE filetype = 0)
SET @datafile = (SELECT TOP (1) LogicalName FROM #databasefiles WHERE filetype = 0)
SET @moveparm = @moveparm + ‘ MOVE ‘ + ”” + @datafile + ”” + ‘ TO ‘ + ”” + @physdatafile + ”” + ‘,’
DELETE TOP (1) FROM #databasefiles WHERE filetype = 0
SET @datafileloopcount += 1

END

–Append the MOVE command for the log file to the MOVE clause and set it to NORECOVERY
SET @moveparm = @moveparm + ‘ MOVE ‘ + ”” + @logfile + ”” + ‘ TO ‘ + ”” + @physlogfile + ”” + ‘, NORECOVERY’

END

IF @droprestoredb = 0
BEGIN

SET @moveparm = @moveparm + ‘, REPLACE’

END

SELECT @fullbackupdate = MAX(c.backup_finish_date)
FROM msdb.dbo.backupset c
INNER JOIN msdb.dbo.backupmediafamily d
ON c.media_set_id = d.media_set_id
WHERE c.database_name = @sourcedbname
AND c.type = ‘D’

SELECT @logbackupdate = MAX(c.backup_start_date)
FROM msdb.dbo.backupset c
INNER JOIN msdb.dbo.backupmediafamily d
ON c.media_set_id = d.media_set_id
WHERE c.database_name = @sourcedbname
AND c.type IN (‘D’, ‘I’)

–Get the most recent full backup file for the source database and insert it into the #backupfiles temp table
INSERT INTO #backupfiles
SELECT
a.backup_start_date, a.backup_finish_date, b.physical_device_name, ‘FULL’ AS [backuptype]
from msdb.dbo.backupset a join msdb.dbo.backupmediafamily b
on a.media_set_id = b.media_set_id
where a.database_name = @sourcedbname
AND backup_finish_date = @fullbackupdate
–(SELECT MAX(c.backup_finish_date)
— FROM msdb.dbo.backupset c
— INNER JOIN msdb.dbo.backupmediafamily d
— ON c.media_set_id = d.media_set_id
— WHERE c.database_name = @sourcedbname
— AND c.type = ‘D’)
order by a.backup_finish_date ASC

–Get a list of differential backup files older than the most recent full backup
INSERT INTO #backupfiles
SELECT TOP 1
a.backup_start_date, a.backup_finish_date, b.physical_device_name, ‘DIFF’ AS [backuptype]
from msdb.dbo.backupset a join msdb.dbo.backupmediafamily b
on a.media_set_id = b.media_set_id
where a.database_name = @sourcedbname
AND a.type = ‘I’
AND backup_finish_date > @fullbackupdate
–(SELECT MAX(c.backup_finish_date)
— FROM msdb.dbo.backupset c
— INNER JOIN msdb.dbo.backupmediafamily d
— ON c.media_set_id = d.media_set_id
— WHERE c.database_name = @sourcedbname
— AND c.type = ‘D’)
order by a.backup_finish_date DESC

–Get all log backupfiles run after the latest full or differential backup and insert it into the #backupfiles temp table
INSERT INTO #backupfiles
SELECT
a.backup_start_date, a.backup_finish_date, b.physical_device_name,’LOG’ AS [backuptype]
from msdb.dbo.backupset a join msdb.dbo.backupmediafamily b
on a.media_set_id = b.media_set_id
where a.database_name = @sourcedbname
AND a.type = ‘L’
AND backup_finish_date > @logbackupdate
–(SELECT MAX(c.backup_start_date)
— FROM msdb.dbo.backupset c
— INNER JOIN msdb.dbo.backupmediafamily d
— ON c.media_set_id = d.media_set_id
— WHERE c.database_name = @sourcedbname
— AND c.type IN (‘D’, ‘I’))
order by a.backup_finish_date ASC

IF @stopat < @fullbackupdate
BEGIN

SET @errormessage = ‘The @stopat values provided ‘ + CAST(@stopat AS VARCHAR(26)) + ‘is older than the most recent full backup date of ‘ + CAST(@fullbackupdate AS VARCHAR(26)) + ‘. Please check the value and rerun.’

RAISERROR (@errormessage, — Message text.
16, — Severity.
1 — State.
);

END

IF @stopat IS NOT NULL
BEGIN

SELECT TOP 1 @logbackuplimit = backupfinishdate FROM #backupfiles
WHERE backupfinishdate > @stopat

DELETE FROM #backupfiles
WHERE backupfinishdate > @logbackuplimit

SELECT * FROM #backupfiles

END

–Get counts of all backup files, full backup files, differential backup files, and log backup files for use in loop processing below
SELECT @filecount = COUNT(*) FROM #backupfiles
SELECT @fullfilecount = COUNT(*) FROM #backupfiles WHERE backuptype = ‘FULL’
SELECT @diffbackupcount = COUNT(*) FROM #backupfiles WHERE backuptype = ‘DIFF’
SELECT @logbackupcount = COUNT(*) FROM #backupfiles WHERE backuptype = ‘LOG’

IF @fullfilecount = 0
BEGIN

RAISERROR (‘There are no full backup files for your database.’, — Message text.
16, — Severity.
1 — State.
);

END

–While backup files exists, loop through them to generate the restore statement
WHILE @loopcount <= @filecount
BEGIN

–Get the top backup file from the temp table
SET @backupfiletype = (SELECT TOP 1 backuptype FROM #backupfiles)

–If it is a full backup file, build the restore statement
IF @backupfiletype = ‘FULL’
BEGIN

–If there are no log backups to apply, replace NORECOVERY with RECOVERY in the MOVE clause
IF (@logbackupcount = 0 AND @diffbackupcount = 0)
BEGIN

SET @moveparm = REPLACE(@moveparm, ‘NORECOVERY’, ‘RECOVERY’)

END

–If there is a single full backup file, build the RESTORE statement with that file
IF @fullfilecount = 1
BEGIN

SET @backupfile = (SELECT TOP 1 physicalfilename FROM #backupfiles)

SET @sqlstr = ‘RESTORE DATABASE ‘ + @restoredbname + ‘ FROM DISK = ‘ + ”” + @backupfile + ”” + @moveparm
–PRINT @sqlstr
DELETE TOP (1) FROM #backupfiles

END
–If there is more than one full backup file, build the RESTORE command for all full backup files
ELSE IF @fullfilecount > 1
BEGIN

WHILE @backuploopcount <= @fullfilecount
BEGIN

SET @backupfile = (SELECT TOP 1 physicalfilename FROM #backupfiles WHERE backuptype = ‘FULL’)
SET @fromstatement = @fromstatement + ‘DISK = ‘ + ”” + @backupfile + ”” + ‘,’
DELETE TOP (1) FROM #backupfiles WHERE backuptype = ‘FULL’
SET @backuploopcount += 1

END

–Truncate the trailing comma from the FROM clause
SET @fromstatement = SUBSTRING(@fromstatement,1,(LEN(@fromstatement) – 1))
SET @sqlstr = ‘RESTORE DATABASE ‘ + @restoredbname + @fromstatement + @moveparm
SET @loopcount += 1
–PRINT @sqlstr

END

END
–One RESTORE datement will be built for the most recent differential backup
ELSE IF @backupfiletype = ‘DIFF’
BEGIN

IF @diffbackupcount = 1 AND @logbackupcount = 0
BEGIN

SET @moveparm = REPLACE(@moveparm, ‘NORECOVERY’, ‘RECOVERY’)

END

SET @backupfile = (SELECT TOP 1 physicalfilename FROM #backupfiles)

SET @sqlstr = ‘RESTORE DATABASE ‘ + @restoredbname + ‘ FROM DISK = ‘ + ”” + @backupfile + ”” + @moveparm
–PRINT @sqlstr
DELETE TOP (1) FROM #backupfiles

END
–If it is a log backup file, build a RESTORE log statement
–One RESTORE datement will be built for each log backup file
ELSE IF @backupfiletype = ‘LOG’
BEGIN

SET @backupfile = (SELECT TOP 1 physicalfilename FROM #backupfiles)

SET @sqlstr = ‘RESTORE LOG ‘ + @restoredbname + ‘ FROM DISK = ‘ + ”” + @backupfile + ””

–If there is another log backup file, set the RESTORE to WITH NORECOVERY
IF (SELECT COUNT(*) FROM #backupfiles) > 1
BEGIN

SET @sqlstr = @sqlstr + ‘ WITH NORECOVERY’

END
–If there is not another log backup file, set the RESTORE to WITH RECOVERY
ELSE
BEGIN

IF @stopat IS NOT NULL
BEGIN
–CAST(@stopat AS VARCHAR(26))
SET @sqlstr = @sqlstr + ‘ WITH NORECOVERY, STOPAT = ‘ + ”” + CONVERT(VARCHAR(30),@stopat,121) + ””

END
ELSE
BEGIN

SET @sqlstr = @sqlstr + ‘ WITH RECOVERY’

END

END

DELETE TOP (1) FROM #backupfiles

END

–If @noexec = 1, PRINT @sqlstr
IF @noexec = 1
BEGIN

PRINT @sqlstr

END
–If @noexec <> 1, EXEC @sqlstr
ELSE
BEGIN

EXEC (@sqlstr)

END

–Increment the loop count and continue processing backup files
SET @loopcount += 1

END

IF @stopat IS NOT NULL
BEGIN

SET @sqlstr = ‘RESTORE DATABASE ‘ + @restoredbname + ‘ WITH RECOVERY’

IF @noexec = 1
BEGIN

PRINT @sqlstr

END
ELSE
BEGIN

EXEC(@sqlstr)

END

END

END TRY
BEGIN CATCH

SELECT
@sourcedbname AS DatabaseName,
ERROR_NUMBER() AS ErrorNumber,
ERROR_SEVERITY() AS ErrorSeverity,
ERROR_STATE() as ErrorState,
ERROR_PROCEDURE() as ErrorProcedure,
ERROR_LINE() as ErrorLine,
ERROR_MESSAGE() as ErrorMessage;

END CATCH
GO
[/sourcecode]