How can i read a csv based on data in other columns? : <p>Heres my example csv:</p>

<pre><code>col1:  col2:  col3:
1      true   false
2      true   true
3      false  false
4      false  true
5      true   true
</code></pre>

<p>i want to be able to say 'give me col1 if col2 is true and col3 is false' 
Any help is appreciated</p>
