A scripts folder can include a Filter.scpf file that contains SQL Compare filters. These filters exclude certain database objects when comparing schemas.

There are three DLM Automation cmdlets that use SQL Compare filters:

• New-DlmDatabaseRelease
  By default, this cmdlet will use the Filter.scpf file included in the source schema when generating the update script.
• Sync-DlmDatabaseSchema
  By default, this cmdlet will use the Filter.scpf file included in the source schema when updating the target schema.
• Invoke-DlmDatabaseSchemaValidation
  This cmdlet will use a filter specified via FilterPath when cleaning out / creating a temporary database to validate the script folder schema.

The source schema must be either a scripts folder or a NuGet database package.

For any of these cmdlets, you can use the -FilterPath parameter to specify an alternative filter file if you want to override the filter file generated by SQL Source Control in the source schema. You can also use this parameter to specify a filter file when none is included in the source schema.

$scriptsFolder = "C:\Work\Scriptsfolder\"
$test = New-DlmDatabaseConnection -ServerInstance "test01\sql2012" -Database "Test" -Username "sa" -Password "P@ssw0rd" 
$filter = "C:\Work\MyFilter.scpf" 
New-DlmDatabaseRelease -Target $test-Source $scriptsFolder -FilterPath $filter

This example demonstrates using the MyFilter.scpf filter file to determine which database objects are included and excluded when the New-DlmDatabaseRelease cmdlet generates the update script. This will override any filter file present in the scripts folder.