title: How to pass Data Studio Controls to BigQuery custom query
body: <p>I have the Data Studio Report in which I have Date and Task Controls.</p>
  <p><a href="https://i.stack.imgur.com/qKLB8.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/qKLB8.png" alt="enter image description here" /></a></p>
  <p>I am using custom BigQuery and have already set the date Control via <code>date between @DS_START_DATE and @DS_END_DATE</code> but I also need to set Task in the custom query.</p>
  <p><a href="https://i.stack.imgur.com/n4a2u.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/n4a2u.png" alt="enter image description here" /></a></p>
  <p>Note: I cannot use the parameter like Task = @Task because Task is a Control while adding parameter(@Task) is a completely different thing.</p>
  <p>Update : The task is not a first-level filter. Somehow I need it to pass it in the subquery. I can pass the date in subquery via @DS_START_DATE and @DS_END_DATE but cannot do the same with Task.</p>
  <p><a href="https://i.stack.imgur.com/oUtrP.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/oUtrP.png" alt="enter image description here" /></a></p>
  <p>Thanks in advance :)</p>