title: Regular Expression to validate the field: field must contain atleast 2 AlphaNumeric characters
body: <p>I need to validate VARCHAR field.
  conditions are: field must contain atleast 2 AlphaNumeric characters</p>
  
  <p>so please any one give the Regular Expression for the above conditions</p>
  
  <p>i wrote below Expression but it will check atleast 2 letters are alphanumeric. and if my input will have other than alphanumeric it is nt validating.</p>
  
  <p>'^[a-zA-Z0-9]{2,}$'</p>
  
  <p>please help.........</p>