Delete duplicate entriess from the internal table its urgent pls help.

Question

Hi friends,
Hope everybody is doing good,Here is m query on delete duplicate data from the intenal table.
I have an internal table which contain data in the following format.
Doc No Comp Cod Vendor Assignment
1500000009 JM11 00000000
1500000008 JM11 20070212(Repeating)
1500000007 JM11 20070212
1500000006 JM11 00000000
1500000005 JM11 00000000
1500000004 JM11 00000000(Repeating)
1500000003 JM11 00000000 (Repeating)
1500000002 JM11 00000000
1500000001 JM11 20050302
1500000000 JM11 00000000
1500000003 JM11 10000088
1500000001 JM11 10000088
1500000030 JM11 10006260
1500000010 JM11 10006269
1500000008 JM11 10006269
1500000006 JM11 10006269
1500000004 JM11 10006269
if you see the document numbers,there are some document number which are repeating here,there are some document numer which contain vendor number but not the assignments,some of the document numbers contain the assignments but not the vendors.
If my internal table contain this kind of data with repeted document numbers than i want the document number which contains only the vendor number.
Pls help me with the appropriate logic,its urgent.
Thanks a lot
mrutyun^

Answer 1

Hi,
<u><b>Deleting Adjacent Duplicate Entries</b></u>
To delete adjacent duplicate entries use the following statement:
DELETE ADJACENT DUPLICATE ENTRIES FROM <itab>
[COMPARING <f1> <f2> ...
|ALL FIELDS].
The system deletes all adjacent duplicate entries from the internal table <itab>. Entries are
duplicate if they fulfill one of the following compare criteria:
  Without the COMPARING addition, the contents of the key fields of the table must be
identical in both lines.
  If you use the addition COMPARING <f1> <f2> ... the contents of the specified fields <f1>
<f2> ... must be identical in both lines. You can also specify a field <fi> dynamically as
the contents of a field <ni> in the form (<ni>). If <ni> is empty when the statement is
executed, it is ignored. You can restrict the search to partial fields by
specifying offset and length.
  If you use the addition COMPARING ALL FIELDS the contents of all fields of both lines
must be identical.
You can use this statement to delete all duplicate entries from an internal table if the table is
sorted by the specified compare criterion.
If at least one line is deleted, the system sets SY-SUBRC to 0, otherwise to 4.
Examples
DATA: BEGIN OF LINE,
COL1 TYPE I,
COL2 TYPE I,
END OF LINE.
DATA ITAB LIKE HASHED TABLE OF LINE WITH UNIQUE KEY COL1.
DO 4 TIMES.
LINE-COL1 = SY-INDEX.
LINE-COL2 = SY-INDEX ** 2.
INSERT LINE INTO TABLE ITAB.
ENDDO.
LINE-COL1 = 1.
DELETE TABLE ITAB: FROM LINE,
WITH TABLE KEY COL1 = 3.
LOOP AT ITAB INTO LINE.
WRITE: / LINE-COL1, LINE-COL2.
ENDLOOP.
The output is:
2    4
4   16
The program fills a hashed table with a list of square numbers. The DELETE
statement delete the lines from the table where the key field COL1 has the contents 1 or 3.
Regards,
Bhaskar