ARTICLE
Obsolete Extracts
An extract dataset, or extract for short, is a dataset in the internal
session of an ABAP program that is not handled as a data object and
therefore has no data type. There is only one extract dataset for every
ABAP program. It can be filled and read using ABAP statements. The
content of the extract dataset cannot be deleted explicitly.
In the same way as an internal table, an extract dataset is made up of a
dynamic number of lines. The size of the extract dataset is
theoretically unlimited. If the size exceeds 500 KB , it is stored
in a file of the operating system. Sizes of up to 2 GB (and
larger for 64-bit processors) are workable. Unlike internal tables, the
individual lines can have different structures. The row structures are
declared as field groups using the statement
FIELD-GROUPS .
The exact structure of each row is not determined until the program is
executed using the statement INSERT .
The statements used for processing extracts are:
EXTRACT
SORT
LOOP
AT
Notes
Field groups cannot be defined in class or interface pools. Their
extract dataset, however, can be edited in methods of local classes of
other programs.
Extracts are obsolete. We recommend that you use internal
tables instead
Documentation extract taken from SAP system, � Copyright SAP AG. All rights reserved