title: Verify if the second character is a letter in SQL
body: <p>I want to put a condition in my query where I have a column that should contain second position as an alphabet.</p>
  
  <p>How to achieve this?</p>
  
  <p>I've tried with <code>_[A-Z]%</code> in where clause but is not working. I've also tried <code>[A-Z]%</code>.</p>
  
  <p>Any inputs please?</p>