title: DAX expression for COUNT of GROUPBY
body: <p>I am new to PowerBI and writing DAX expressions.</p>
  
  <p>I have a table with a text column with different values.All I want to do is get the count for each distinct value. It's easily achieved with this SQL but I can't get the right DAX expression for it.</p>
  
  <pre><code>select [value],count(*) as TagCount from Tags
  group by [value]
  order by TagCount desc
  </code></pre>
  
  <p>Any help?</p>