title: Check if starting characters of a string are alphabetical in T-SQL
body: <p>Is it possible, just using TSQL, to check if the first two characters of a varchar field are alphabetical?</p>
  
  <p>I need to select from <code>my_table</code> only the rows having <code>my_field</code> beginning with two alphabetical chars. How can I achieve this?</p>
  
  <p>Is it possible to use a regex?</p>