title: How to handle select drop-down dynamically using mat-table in angular8?
body: <p>I have to add columns dynamically to the mat-table, now I want to add some column rows are input fields, some are select drop-down and one is the output of all the columns. And these column names are dynamically.</p>
  
  <p>How to handle those conditions in Mat-Table ?</p>
  
  <p>Link: <a href="https://stackblitz.com/edit/angular-pg9fie" rel="nofollow noreferrer">https://stackblitz.com/edit/angular-pg9fie</a></p>