Technical Article

T-SQL query to get the latest available backup chain

,

This query shall return the latest available database backup chain (Full, Differential and Log) of individual databases along with their backup size and compressed size on the SQL Server instance. Output shall also include the total backup size, total compressed size of all the Full backups, Differential backups, Log backups and Total Full + Differential + Log backups.

This query can be helpful for knowing the latest backup chain and size of the backups for the capacity planning and also to estimate the space requirement for database restore.

Below image shows the T-SQL query output format with sample data.

/*
Author:Brahmanand Shukla
Date:28-Oct-2019
Purpose:T-SQL query to get the latest available backup chain
*/
DECLARE @server_nameVARCHAR(50)='ALL'
, @database_nameVARCHAR(50)='ALL'

-- Uncomment the below section and supply your <server name> if you want to fetch the report for specific server
--SET @server_name='sql_server_1'

-- Uncomment the below section and supply your <database name> if you want to fetch the report for specific database
--SET @database_name='sql_database_1'

; WITH cte_Backup
AS
(
SELECT backupset.server_name
, backupset.database_name
, backupset.backup_start_date
, backupset.backup_finish_date
,
CASE backupset.type
WHEN 'D' THEN 'Full'
WHEN 'I' THEN 'Differential'
WHEN 'L' THEN 'Log'
END AS [backup_type]
, CAST(((backupset.backup_size / 1024) / 1024) AS NUMERIC(18, 2)) AS [Backup_size_MB]
, CAST(((backupset.compressed_backup_size / 1024) / 1024) AS NUMERIC(18, 2)) AS [Compressed_Backup_size_MB]
, DATEDIFF(SECOND, backupset.backup_start_date, backupset.backup_finish_date) AS [Duration_Seconds]
, backupset.database_creation_date
, backupset.recovery_model
, backupmediafamily.physical_device_name
, backupset.[user_name]
, backupset.[backup_set_uuid]
, backupset.[database_backup_lsn]
, backupset.[differential_base_guid]
, ROW_NUMBER() OVER(PARTITION BY backupset.server_name, backupset.database_name, backupset.type 
ORDER BY backupset.backup_finish_date DESC) AS [RowID]
,
CASE backupset.type
WHEN 'D' THEN 1
WHEN 'I' THEN 2
WHEN 'L' THEN 3
END AS [backup_type_sort_order]
FROM msdb.dbo.backupmediafamily backupmediafamily
INNER JOIN msdb.dbo.backupset backupset
ON backupmediafamily.media_set_id = backupset.media_set_id
WHERE (@server_name = 'ALL' OR backupset.server_name = @server_name)
AND (@database_name = 'ALL' OR backupset.database_name = @database_name)
)
, cte_Backup_Full
AS
(
SELECT *
FROM cte_Backup
WHERE [backup_type] = 'Full'
AND [RowID] = 1
)
, cte_Backup_Differential
AS
(
SELECT DIF.[server_name]
, DIF.[database_name]
, DIF.[backup_start_date]
, DIF.[backup_finish_date]
, DIF.[backup_type]
, DIF.[Backup_size_MB]
, DIF.[Compressed_Backup_size_MB]
, DIF.[Duration_Seconds]
, DIF.[database_creation_date]
, DIF.[recovery_model]
, DIF.[physical_device_name]
, DIF.[user_name]
, DIF.[backup_type_sort_order]
, DIF.[database_backup_lsn]
, ROW_NUMBER() OVER(PARTITION BY DIF.[server_name], DIF.[database_name], DIF.[differential_base_guid] 
ORDER BY DIF.[backup_finish_date] DESC) AS [RowID]
FROM cte_Backup DIF
INNER JOIN cte_Backup_Full FUL
ON FUL.[server_name] = DIF.[server_name]
AND FUL.[database_name] = DIF.[database_name]
AND FUL.[backup_set_uuid] = DIF.[differential_base_guid]
WHERE DIF.[backup_type] = 'Differential'
AND DIF.[backup_finish_date] > FUL.[backup_finish_date]
)
, cte_Backup_Log
AS
(
SELECT AL.*
FROM cte_Backup AL
INNER JOIN cte_Backup_Differential DIF
ON DIF.[server_name] = AL.[server_name]
AND DIF.[database_name] = AL.[database_name]
AND DIF.[database_backup_lsn] = AL.[database_backup_lsn]
WHERE DIF.[RowID] = 1
AND AL.[backup_type] = 'Log'
AND AL.[backup_finish_date] > DIF.[backup_finish_date]
)
, cte_Backup_Chain
AS
(
SELECT [server_name]
, [database_name]
, [backup_start_date]
, [backup_finish_date]
, [backup_type]
, [Backup_size_MB]
, [Compressed_Backup_size_MB]
, [Duration_Seconds]
, [database_creation_date]
, [recovery_model]
, [physical_device_name]
, [user_name]
, [backup_type_sort_order]
FROM cte_Backup_Full
UNION ALL
SELECT [server_name]
, [database_name]
, [backup_start_date]
, [backup_finish_date]
, [backup_type]
, [Backup_size_MB]
, [Compressed_Backup_size_MB]
, [Duration_Seconds]
, [database_creation_date]
, [recovery_model]
, [physical_device_name]
, [user_name]
, [backup_type_sort_order]
FROM cte_Backup_Differential
WHERE [RowID] = 1
UNION ALL
SELECT [server_name]
, [database_name]
, [backup_start_date]
, [backup_finish_date]
, [backup_type]
, [Backup_size_MB]
, [Compressed_Backup_size_MB]
, [Duration_Seconds]
, [database_creation_date]
, [recovery_model]
, [physical_device_name]
, [user_name]
, [backup_type_sort_order]
FROM cte_Backup_Log
)
, cte_Backup_Full_All_DB
AS
(
SELECT [server_name]
, 'ALL_FULL' AS [database_name]
, NULL AS [backup_start_date]
, NULL AS [backup_finish_date]
, NULL AS [backup_type]
, SUM([Backup_size_MB]) AS [Backup_size_MB]
, SUM([Compressed_Backup_size_MB]) AS [Compressed_Backup_size_MB]
, SUM([Duration_Seconds]) AS [Duration_Seconds]
, NULL AS [database_creation_date]
, NULL AS [recovery_model]
, NULL AS [physical_device_name]
, NULL AS [user_name]
, 0 AS [backup_type_sort_order]
FROM cte_Backup_Chain
WHERE [backup_type] = 'Full'
GROUP BY [server_name]
)
, cte_Backup_Differential_All_DB
AS
(
SELECT [server_name]
, 'ALL_DIFF' AS [database_name]
, NULL AS [backup_start_date]
, NULL AS [backup_finish_date]
, NULL AS [backup_type]
, SUM([Backup_size_MB]) AS [Backup_size_MB]
, SUM([Compressed_Backup_size_MB]) AS [Compressed_Backup_size_MB]
, SUM([Duration_Seconds]) AS [Duration_Seconds]
, NULL AS [database_creation_date]
, NULL AS [recovery_model]
, NULL AS [physical_device_name]
, NULL AS [user_name]
, 0 AS [backup_type_sort_order]
FROM cte_Backup_Chain
WHERE [backup_type] = 'Differential'
GROUP BY [server_name]
)
, cte_Backup_Log_All_DB
AS
(
SELECT [server_name]
, 'ALL_LOG' AS [database_name]
, NULL AS [backup_start_date]
, NULL AS [backup_finish_date]
, NULL AS [backup_type]
, SUM([Backup_size_MB]) AS [Backup_size_MB]
, SUM([Compressed_Backup_size_MB]) AS [Compressed_Backup_size_MB]
, SUM([Duration_Seconds]) AS [Duration_Seconds]
, NULL AS [database_creation_date]
, NULL AS [recovery_model]
, NULL AS [physical_device_name]
, NULL AS [user_name]
, 0 AS [backup_type_sort_order]
FROM cte_Backup_Chain
WHERE [backup_type] = 'Log'
GROUP BY [server_name]
)
, cte_Backup_Full_Differential_Log_All_DB
AS
(
SELECT [server_name]
, 'FULL+DIFF+LOG' AS [database_name]
, NULL AS [backup_start_date]
, NULL AS [backup_finish_date]
, NULL AS [backup_type]
, SUM([Backup_size_MB]) AS [Backup_size_MB]
, SUM([Compressed_Backup_size_MB]) AS [Compressed_Backup_size_MB]
, SUM([Duration_Seconds]) AS [Duration_Seconds]
, NULL AS [database_creation_date]
, NULL AS [recovery_model]
, NULL AS [physical_device_name]
, NULL AS [user_name]
, 0 AS [backup_type_sort_order]
FROM cte_Backup_Chain
GROUP BY [server_name]
)
, cte_Final_Output_Staging
AS
(
SELECT [server_name]
, [database_name]
, [backup_start_date]
, [backup_finish_date]
, [backup_type]
, [Backup_size_MB]
, [Compressed_Backup_size_MB]
, [Duration_Seconds]
, [database_creation_date]
, [recovery_model]
, [physical_device_name]
, [user_name]
, [backup_type_sort_order]
, 1 AS [sort_priority]
FROM cte_Backup_Full_All_DB
UNION ALL
SELECT [server_name]
, [database_name]
, [backup_start_date]
, [backup_finish_date]
, [backup_type]
, [Backup_size_MB]
, [Compressed_Backup_size_MB]
, [Duration_Seconds]
, [database_creation_date]
, [recovery_model]
, [physical_device_name]
, [user_name]
, [backup_type_sort_order]
, 2 AS [sort_priority]
FROM cte_Backup_Differential_All_DB
UNION ALL
SELECT [server_name]
, [database_name]
, [backup_start_date]
, [backup_finish_date]
, [backup_type]
, [Backup_size_MB]
, [Compressed_Backup_size_MB]
, [Duration_Seconds]
, [database_creation_date]
, [recovery_model]
, [physical_device_name]
, [user_name]
, [backup_type_sort_order]
, 3 AS [sort_priority]
FROM cte_Backup_Log_All_DB
UNION ALL
SELECT [server_name]
, [database_name]
, [backup_start_date]
, [backup_finish_date]
, [backup_type]
, [Backup_size_MB]
, [Compressed_Backup_size_MB]
, [Duration_Seconds]
, [database_creation_date]
, [recovery_model]
, [physical_device_name]
, [user_name]
, [backup_type_sort_order]
, 4 AS [sort_priority]
FROM cte_Backup_Full_Differential_Log_All_DB
UNION ALL
SELECT [server_name]
, [database_name]
, [backup_start_date]
, [backup_finish_date]
, [backup_type]
, [Backup_size_MB]
, [Compressed_Backup_size_MB]
, [Duration_Seconds]
, [database_creation_date]
, [recovery_model]
, [physical_device_name]
, [user_name]
, [backup_type_sort_order]
, (4 + [backup_type_sort_order]) AS [sort_priority]
FROM cte_Backup_Chain
)

SELECT [server_name]
, [database_name]
, [backup_start_date]
, [backup_finish_date]
, [backup_type]
, [Backup_size_MB]
, [Compressed_Backup_size_MB]
, [Duration_Seconds]
, [database_creation_date]
, [recovery_model]
, [physical_device_name]
, [user_name]
FROM cte_Final_Output_Staging
ORDER BY ROW_NUMBER() OVER(ORDER BY [sort_priority] ASC, [database_name] ASC, [backup_type_sort_order] ASC, [backup_finish_date] ASC)

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