CNT (ABAP Keyword) introduction & details
… CNT(h) …
is not a statement, but a field which is automatically created and
filled by the system if f is a sub-field of an extract dataset .
CNT(h) can only be addressed from within a LOOP on a sorted extract.
Type Standard output length Output
C len left-justified
D 8 left-justified
F 22 right-justified
I 11 right-justified
N len left-justified
P 2*len or 2*len+1 right-justified
T 6 left-justified
X 2*len left-justified
h is a non-numeric field (see also ABAP/4 number types ) from the field
group HEADER and part of the sort key of the extract dataset, the end
of a control level (AT END OF , AT LAST ) is such that CNT(h) contains
the number of different values which the field h has accepted in the
group, i.e. the number of records in the group for which the field f
has changed its value.