title: Extracting dates with regex in Datastudio
body: <p>I have data coming in with the format: <code>stuff_01.03.21-03.05.21</code></p>
  <p>The first date is start the second is end so I figured I could pull them out into their own columns. I know I could just do a left() but i would like to do this with a regex_extract().</p>
  <p>I have tried: &quot;_((\d{2}\.){2}\d{2})-&quot; which works on regex101.com.
  I have tried it as both <code>\\d</code> and <code>\d</code>. I have tried escaping the &quot;-&quot;.</p>
  <p>I can get it to work <code>_(\d\d.\d\d.\d\d)-</code></p>
  <p>Is there something with re2 syntax that is really limiting on regex expressions?</p>