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difference between the workarea and headerline.plz tell me
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Answer Posted / jyo
Header Line
While adding or retrieving records to or from internal table
we have to keep the record temporarily.
The area where this record is kept is called as work area
for the internal table. The area must have the same
structure as that of internal table. An internal table
consists of a body and an optional header line.
Header line is a implicit work area for the internal table.
It depends on how the internal table is declared that the
itab will have the header line or not.
The header line is a field string with the same structure as
a row of the body, but it can only hold a single row.
e.g.
data: begin of itab occurs 10,
ab type c,
cd type i,
end of itab. " this table will have the header line.
Work Area
Work area is of the same structure like internal table
referred, it will also possess only one record, but this is
declared explicitly, to perform calculations and other
manipulations.
Work area is like a paper and pencil concept, where the
calculations and manipulations will be done and will be
erased after the execution.
e.g.
data: wa_itab like itab. " explicit work area for itab
data: itab1 like itab occurs 10. " table is without header line.
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