functions/Get-DbaSchemaChangeHistory.ps1
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function Get-DbaSchemaChangeHistory { <# .SYNOPSIS Gets DDL changes logged in the system trace. .DESCRIPTION Queries the default system trace for any DDL changes in the specified timeframe Only works with SQL 2005 and later, as the system trace didn't exist before then .PARAMETER SqlInstance SQL Server name or SMO object representing the SQL Server to connect to. This can be a collection and receive pipeline input to allow the function to be executed against multiple SQL Server instances. .PARAMETER SqlCredential SqlCredential object to connect as. If not specified, current Windows login will be used. .PARAMETER Database The database(s) to process - this list is auto-populated from the server. If unspecified, all databases will be processed. .PARAMETER ExcludeDatabase The database(s) to exclude - this list is auto-populated from the server .PARAMETER Since A date from which DDL changes should be returned. Default is to start at the beggining of the current trace file .PARAMETER Object The name of a SQL Server object you want to look for changes on .PARAMETER Silent Use this switch to disable any kind of verbose messages .NOTES Tags: Migration, Backup, Databases Original Author: Stuart Moore (@napalmgram - http://stuart-moore.com) Website: https://dbatools.io Copyright: (C) Chrissy LeMaire, clemaire@gmail.com License: GNU GPL v3 https://opensource.org/licenses/GPL-3.0 .LINK https://dbatools.io/Get-DbaSchemaChangeHistory .EXAMPLE Get-DbaSchemaChangeHistory -SqlInstance localhost Returns all DDL changes made in all databases on the SQL Server instance localhost since the system trace began .EXAMPLE Get-DbaSchemaChangeHistory -SqlInstance localhost -Since (Get-Date).AddDays(-7) Returns all DDL changes made in all databases on the SQL Server instance localhost in the last 7 days .EXAMPLE Get-DbaSchemaChangeHistory -SqlInstance localhost -Database Finance, Prod -Since (Get-Date).AddDays(-7) Returns all DDL changes made in the Prod and Finance databases on the SQL Server instance localhost in the last 7 days .EXAMPLE Get-DbaSchemaChangeHistory -SqlInstance localhost -Database Finance -Object AccountsTable -Since (Get-Date).AddDays(-7) Returns all DDL changes made to the AccountsTable object in the Finance database on the SQL Server instance localhost in the last 7 days #> [CmdletBinding()] param ( [parameter(Position = 0, Mandatory = $true, ValueFromPipeline = $True)] [Alias("ServerInstance", "SqlServer")] [DbaInstanceParameter[]]$SqlInstance, [Alias("Credential")] [PSCredential] $SqlCredential, [Alias("Databases")] [object[]]$Database, [object[]]$ExcludeDatabase, [DbaDateTime]$Since, [string[]]$Object, [switch]$Silent ) process { foreach ($instance in $SqlInstance) { Write-Message -Level Verbose -Message "Attempting to connect to $instance" try { $server = Connect-SqlInstance -SqlInstance $instance -SqlCredential $SqlCredential } catch { Stop-Function -Message "Failure" -Category ConnectionError -ErrorRecord $_ -Target $instance -Continue } if ($Server.Version.Major -le 8) { Stop-Function -Message "This command doesn't support SQL Server 2000, sorry about that" return } $TraceFileQuery = "select path from sys.traces where is_default = 1" $TraceFile = $server.ConnectionContext.ExecuteWithResults($TraceFileQuery).Tables.Rows | Select-Object Path if ($null -eq $Database) { $Database = $server.databases.name } if ($ExcludeDatabase) { $database = $database | Where-Object { $_ -notin $ExcludeDatabase } } foreach ($db in $Database) { if ($server.databases[$db].status -notlike '*normal*') { Stop-Function -Message "Can't open database $db. Skipping." -Continue } $sql = "select SERVERPROPERTY('MachineName') AS ComputerName, ISNULL(SERVERPROPERTY('InstanceName'), 'MSSQLSERVER') AS InstanceName, SERVERPROPERTY('ServerName') AS SqlInstance, tt.databasename as 'DatabaseName', starttime as 'StartTime', Sessionloginname as 'LoginName', NTusername as 'UserName', applicationname as 'ApplicationName', case eventclass When '46' Then 'Create' when '47' Then 'Drop' when '164' then 'Alter' end as 'DDLOperation', s.name+'.'+o.name as 'Object', o.type_desc as 'ObjectType' from sys.objects o inner join sys.schemas s on s.schema_id=o.schema_id cross apply (select * from ::fn_trace_gettable('$($TraceFile.path)',default) where ObjectID=o.object_id ) tt where tt.objecttype not in (21587) and tt.DatabaseID=db_id() and tt.EventSubClass=0" if ($null -ne $since) { $sql = $sql +" and tt.StartTime>'$Since' " } if ($null -ne $object) { $sql = $sql + " and o.name in ('$($object -join ''',''')') " } $sql = $sql + " order by tt.StartTime asc" Write-Message -Level Verbose -Message "Querying Database $db on $instance" Write-Message -Level Debug -Message "SQL: $sql" $server.databases[$db].ExecuteWithResults($sql).Tables.Rows | Select-DefaultView -Property ComputerName, InstanceName, SqlInstance, DatabaseName, starttime, LoginName, UserName, ApplicationName, DDLOperation, Object, ObjectType } } } } |