title: Lowercase or uppercase for SQL Statements
body: <p>Is there a fundamental difference between these statements  </p>
  
  <p><code>"select * from users where id = 1"</code><br>
  OR<br>
   <code>"SELECT* FROM users WHERE id = 1"</code><br>
  OR<br>
   <code>'select * from users where id = 1'</code><br>
  OR<br>
   <code>'SELECT * FROM users WHERE id = 1'</code>  </p>
  
  <p>I was just wondering... I always used the 2nd method, but some collegues are bound to use other methods. What is the most common convention?</p>