Remove-ColumnEncryptionKey

DBSystems: Removes a SQL Server database column encryption key

Script

#Requires -Version 5.0
#Requires -Modules SQLServer

[CmdLetBinding()]
Param(
    [Parameter(Mandatory = $true)]   
    [string]$ServerInstance,    
    [Parameter(Mandatory = $true)]   
    [string]$DatabaseName,    
    [Parameter(Mandatory = $true)]  
    [string]$KeyName, 
    [pscredential]$ServerCredential,
    [int]$ConnectionTimeout = 30
)

function Get-SqlServerInstanceInternal {
    [CmdLetBinding()]
    Param(
        [Parameter(Mandatory = $true)]   
        [string]$ServerInstance,    
        [pscredential]$ServerCredential,
        [int]$ConnectionTimeout = 30
    )
    try {
        [hashtable]$cmdArgs = @{
            'ErrorAction' = 'Stop'
            'Confirm' = $false
            'ServerInstance' = $ServerInstance
            'ConnectionTimeout' = $ConnectionTimeout
        }
        if ($null -ne $ServerCredential) {
            $cmdArgs.Add('Credential', $ServerCredential)
        }
        return Get-SqlInstance @cmdArgs
    } catch {
        throw
    }
}

function Get-SqlDatabaseInternal {
    [CmdLetBinding()]
    Param(
        [Parameter(Mandatory = $true)]   
        [object]$ServerInstance,    
        [Parameter(Mandatory = $true)]   
        [string]$DatabaseName
    )
    try {
        [hashtable]$cmdArgs = @{
            'ErrorAction' = 'Stop'
            'InputObject' = $ServerInstance
            'Name' = $DatabaseName
            'Confirm' = $false
        }
        return Get-SqlDatabase @cmdArgs
    } catch {
        throw
    }
}

Import-Module SQLServer

try {
    $instance = Get-SqlServerInstanceInternal -ServerInstance $ServerInstance -ServerCredential $ServerCredential -ConnectionTimeout $ConnectionTimeout
    $db = Get-SqlDatabaseInternal -DatabaseName $DatabaseName -ServerInstance $instance
    
    Remove-SqlColumnEncryptionKey -InputObject $db -Name $KeyName -ErrorAction Stop
    Write-Output "Column encryption key '$KeyName' successfully removed from '$DatabaseName'."
} catch {
    throw
}

Customize

ServerInstance string

Specifies the name of the target computer including the instance name, e.g. MyServer\Instance

DatabaseName string

KeyName string

Specifies the name of the column encryption key object to remove

ServerCredential pscredential

Specifies a PSCredential object for the connection to the SQL Server. ServerCredential is ONLY used for SQL Logins. When you are using Windows Authentication you don't specify -Credential. It is picked up from your current login.

ConnectionTimeout int

Specifies the time period to retry the command on the target server