title: PowerBI how to use one slicer with two columns (dates)
body: <p>I have a table with columns 'date from' and 'date to', and visualize them as bars using asTimeline visual.</p>
  
  <p>I want to add a slicer which will work on both of these fields simultaneously. Currently I have two slicers working independently on each of those fields:</p>
  
  <p><a href="https://i.stack.imgur.com/iUzGG.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/iUzGG.png" alt="enter image description here"></a></p>
  
  <p>This is not really intuitive. Since start and end both define a period in time, if the period is inside the slider selection, it should be included. But slicers work on only one field. So I probably need to perform some DAX magic to create a field based on those two, but I don't know where to begin.</p>