title: Handling of mySQL sub-query returning multiple rows
body: <p>Here is my example:</p>
  
  <pre><code>select row_x from table_1 where row_y = (select row_a from table_2 where row_b = x)
  </code></pre>
  
  <p>The problem that I am running into is that my query needs to return multiple rows if the subquery returns multiple rows.</p>
  
  <p>Ideally it would translate to something similar to:</p>
  
  <pre><code> 'select row_x from table_1 where row_y = '&lt;first row from subquery&gt;' or row_y = '&lt;second row from subquery&gt;' etc.
  </code></pre>
  
  <p>How can I make this happen? Thanks!</p>