Below is the script I have come up with database growth of database. It will give the last 6 month database growth for all database of particular instance.
DECLARE @endDate datetime, @months smallint;
SET @endDate = GetDate(); -- Include in the statistic all backups from today
SET @months = 6; -- back to
the last 6 months.
;WITH HIST AS
(SELECT BS.database_name AS
DatabaseName
,YEAR(BS.backup_start_date) * 100
+ MONTH(BS.backup_start_date) AS YearMonth
,CONVERT(numeric(10, 1), MIN(BF.file_size /
1048576.0)) AS
MinSizeMB
,CONVERT(numeric(10, 1), MAX(BF.file_size /
1048576.0)) AS
MaxSizeMB
,CONVERT(numeric(10, 1), AVG(BF.file_size /
1048576.0)) AS
AvgSizeMB
FROM msdb.dbo.backupset as BS
INNER JOIN
msdb.dbo.backupfile AS BF
ON
BS.backup_set_id =
BF.backup_set_id
WHERE NOT BS.database_name IN
('master', 'msdb', 'model', 'tempdb')
AND
BF.file_type = 'D'
AND
BS.backup_start_date BETWEEN
DATEADD(mm, - @months, @endDate) AND @endDate
GROUP BY BS.database_name
,YEAR(BS.backup_start_date)
,MONTH(BS.backup_start_date))
SELECT MAIN.DatabaseName
,MAIN.YearMonth
,MAIN.MinSizeMB
,MAIN.MaxSizeMB
,MAIN.AvgSizeMB
,MAIN.AvgSizeMB
- (SELECT TOP 1 SUB.AvgSizeMB
FROM
HIST AS SUB
WHERE
SUB.DatabaseName =
MAIN.DatabaseName
AND
SUB.YearMonth <
MAIN.YearMonth
ORDER
BY SUB.YearMonth
DESC) AS GrowthMB
FROM HIST AS MAIN
ORDER BY MAIN.DatabaseName
,MAIN.YearMonth
