Answer Posted / sravan

APPEND statement adds the record to the internal table
body.We can't say it adds the new record at the end of the
internal table. It all depends on the type of the internal
table (standard,sorted or Hashed).
COLLECT statement searches for the data in the char type
fields and adds the numeric value.

eg.
if itab contains fields f1 and f2 f1 of char type and f2 of
numc type.
if itab contains data like this.
f1 f2
A 5
b 30
c 10

if we give collect stament like collect itab ( A and 15 as
values)

the data in the itab will become.
f1 f2
A 20
b 30
c 10


this is how it works

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