title: Using a date picker in Zeppelin jdbc interpreter
body: <p>I have a set of charts in my Zeppelin notebook which fetch data from a database for a certain period of time using a jdbc interperter. What I'd like to do is to be able to choose a period which would apply to all the charts.</p>
  
  <p>I can see that one could create an input field using a <a href="https://zeppelin.apache.org/docs/0.7.0/manual/dynamicform.html" rel="nofollow noreferrer">Dynamic Form</a> or even a date picker with <a href="http://zeppelin.apache.org/docs/latest/displaysystem/front-end-angular.html" rel="nofollow noreferrer">Angular</a> (which would be even better). Is it possible to somehow use the chosen period in a jdbc interperter? </p>
  
  <p>In the example given in <a href="http://zeppelin.apache.org/docs/0.7.0/interpreter/jdbc.html#apply-zeppelin-dynamic-forms" rel="nofollow noreferrer">Apply Zeppelin Dynamic Forms</a> I can see how this could be done in one chart, but this is not what I want: to be able to define one field that will affect all of the charts.</p>