title: LDAP Query to get users based on attributes
body: <pre><code>DC=abc,DC=COM
    OU=ABC
       OU=Users
          CN=User1
          CN=User2
          CN=User3
       OU=Computers
    OU=ABC1
       OU=Users
          CN=User4
          CN=User5
          CN=User6
       OU=Computers
    OU=ABC2
       OU=Users
          CN=User7
          CN=User8
          CN=User9
       OU=Computers
  </code></pre>
  
  <p>There is an user attribute called employeeID
  Two types of value can exist in the employeeID records, one that is pure whole number, and other would start with characters like NE</p>
  
  <p>I would like to extract all Users whose employeeID is a number.</p>
  
  <p>What should be the LDAP query, that can be used to acheive the same</p>