title: double backslash in WMI/WQL query powershell
body: <p>I am facing weird issue with my WQL query.</p>
  
  <pre><code>$SCCMQuery = @'
  Select UAR.User, UAR.Application, UAR.CurrentState from sms_fullcollectionmembership as FCM
  INNER JOIN SMS_UserApplicationRequest as UAR ON UAR.User=FCM.SMSID
  where FCM.CollectionID="a\100104"
  '@
  $Results = Get-WmiObject -Namespace "root\SMS\Site_Name" -Query $SCCMQuery
  </code></pre>
  
  <p>Above query is not working properly but when i add another backslash in <code>FCM.CollectionID</code> like this(<code>a\\100104</code>) then it start working.</p>
  
  <p>Can somebody please advise me why it is working like this? I can't manually put the backslash in all the values as they will later be generated from other WMI query.</p>