Clean programming

Question

dear all,
my problem to implement a dynamic programming.
What is to do?
More details here in this two points:
I have here an ITAB which is DYNAMIC!!!
loop at ITAB assigning <fs_wa>
1)  Here I have to get the table keys of the ITAB
2) I have to search with the primaery key values in the same table ITAB. 
endloop.
how I have to point 2. Is there any method or fuba in sap standard?
thank you very much
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Edited by: Thomas Zloch on Jun 18, 2011 11:03 AM

Answer 1

When you say this ITAB is dynamic, it means generic (e.g. TYPE ANY)?
Have a look at [Field Symbols|http://help.sap.com/saphelp_nw04/helpdata/en/fc/eb3860358411d1829f0000e829fbfe/frameset.htm].
You dont need to know column name:
DATA: BEGIN OF LINE,
        COL1 TYPE I VALUE '11',
        COL2 TYPE I VALUE '22',
        COL3 TYPE I VALUE '33'.
DATA: END OF LINE.
DATA: COMP(5) VALUE 'COL3'.
FIELD-SYMBOLS: <F1> TYPE ANY,
               <F2> TYPE ANY,
               <F3> TYPE ANY.
ASSIGN LINE TO <F1>.
ASSIGN COMP TO <F2>.
DO 3 TIMES.
  ASSIGN COMPONENT SY-INDEX OF STRUCTURE <F1> TO <F3>.
  WRITE <F3>.
ENDDO.
ASSIGN COMPONENT <F2> OF STRUCTURE <F1> TO <F3>.
WRITE / <F3>.
OR
TABLES sbook.
DATA: name1(20) TYPE c VALUE 'SBOOK-FLDATE',
      name2(20) TYPE c VALUE 'NAME1'.
FIELD-SYMBOLS <fs> TYPE ANY.
ASSIGN TABLE FIELD (name1) TO <fs>.
WRITE: / 'SY-SUBRC:', sy-subrc.
ASSIGN TABLE FIELD (name2) TO <fs>.
WRITE: / 'SY-SUBRC:', sy-subrc.