Delete adjcacent fields!

Question

Hi experts
I have three columns on an internal table that goes into an ALV report.
A   B      C
1   100    590
1   100     10
2   52      350
2   55      120
2   55      180
And i want this...
A   B      C
1   100    590
               10
2   52      350
2   55      120
              180
I want to delete adjacent duplicates but not deleting the whole row... just one field of the row..
how can i do it? thanks

Answer 1

types: begin of this_type,
a(3),
b(3),
c(3),
end of this_type.
data: itab type table of this_type with header line,
      prev type this_type.
itab-a = 2. itab-b = 52. itab-c = 350. append itab.
itab-a = 1. itab-b = 100. itab-c = 590. append itab.
itab-a = 2. itab-b = 55. itab-c = 120. append itab.
itab-a = 1. itab-b = 100. itab-c = 10. append itab.
itab-a = 2. itab-b = 55. itab-c = 180. append itab.
sort itab by a b c descending.
loop at itab.
if prev-a = itab-a and prev-b = itab-b.
clear: itab-a, itab-b.
modify itab index sy-tabix.
endif.
prev = itab.
write:/ itab-a, space, itab-b, space, itab-c.
endloop.
Check this, altough you need to have some sort, I can't see how you sorted that table