Creating a database user

This recipe demonstrates how to create a database user by using PowerShell and SMO.

Getting ready

If you haven't already done so in the Creating a login recipe, create a SQL login called eric.

In our recipe, we will use a login called eric, which we will map to a user called eric in the AdventureWorks2008R2 database. The T-SQL equivalent of what we are trying to accomplish is:

USE [AdventureWorks2008R2]
GO

CREATE USER [eric] 
FOR LOGIN [eric]

How to do it...

Here are the steps for creating a database user:

1. Open the PowerShell console by going to Start | Accessories | Windows PowerShell | Windows PowerShell ISE.

2. Import the SQLPS module and create a new SMO Server object as follows:

   #import SQL Server module
   Import-Module SQLPS -DisableNameChecking
   
   #replace this with your instance name
   $instanceName = "KERRIGAN"
   $server = New-Object -TypeName Microsoft.SqlServer.Management.Smo.Server -ArgumentList $instanceName

3. Add the following script and run it:

   $loginName = "eric"
   
   #get...