title: Is the best way to search for an empty string just ' '?
body: <p>I am searching for fields with empty strings in a mySQL database. Is the best way simply:</p>
  
  <pre><code>SELECT * 
  FROM Versions
  WHERE vers = ' ';
  </code></pre>
  
  <p>Or is there a function or better practice for this? A lot of data was imported in, and it turned into empty strings here, though the default is NULL if there is no data entered into that field.</p>
  
  <p>Just getting started here, thank you for your patience!</p>