Occurrence of heading in the table

Question

I have data in the front end displayed something like say 

 

Critical
Comp
a	b
c	d
Critical
Comp
a	b
c	d
Important
Comp
a	b
c	d
Important
Comp
a	b
c	d

Where these words are headings and characters are body. I want those words in the table to occur just once. 

 

Critical
Comp
a	b
c	d
a	b
c	d
Important
Comp
a	b
c	d
a	b
c	d

 

Can someone please help me out with this. BTW I am pulling all these data from datatable in the datasets. Help would be much apreciated. Thanks

 

Still waiting for a reply. much appreciated