How colSpan and row Span added to material table Header Angular 7?

Question

I\'m trying to add rowSpan and colSpan in Angular material Table header. Can anyone help me to achieve it.

Answer 1

I have the sample task like you. I just easy to display none with second header.

  
     No. 
     {{element.position}} 
  

 
  
    No
  

Here is my result

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