Abt char to numeric conversion

Question

There is a field named bcode in data base that is of char length 3 , i want 1 to 10 insert in dat field, is it possible , i know yes , so tell me dat field is behaving like character when i m selecting values from selection screen , what i want when i m entering 1 to 7 it should show only then as a numeric field do , how we can do dat? tell me in details?

Answer 1

Then follow Sandipan Ghosh's suggestion above.  Read the database table into an internal table, convert the character numeric data to integer.  Change your select option to be integer.
Or create a table, e.g. z_numtab, with two fields - CH3 type CHAR 3, and INT type INT1.  Populate it with all the numbers 0-999.  Then use it to convert the select option to a series of equalities.
DATA: num TYPE c LENGTH 3,
      int TYPE i.
DATA: lt_numtab TYPE STANDARD TABLE OF z_numtab.
SELECT-OPTIONS: s_num FOR num.
RANGES: r_num FOR i.
FIELD-SYMBOLS: <ls_numtab> TYPE z_numtab.
AT SELECTION-SCREEN..
  LOOP AT s_num.
    IF s_num-low CN ' 0123456789' OR s_num-high CN ' 0123456789'.
      MESSAGE e000(s1) WITH 'Numerics only'.
    ENDIF.
  ENDLOOP.
START-OF-SELECTION.
  LOOP AT s_num.
    r_num-option = s_num-option.
    r_num-sign   = s_num-sign.
    r_num-low    = s_num-low.
    r_num-high   = s_num-high.
    APPEND r_num.
  ENDLOOP.
  SELECT * FROM z_numtab INTO TABLE lt_numtab WHERE int IN r_num.
  REFRESH s_num.
  s_num-sign = 'I'.
  s_num-option = 'EQ'.
  LOOP AT lt_numtab ASSIGNING <ls_numtab>.
    s_num-low = <ls_numtab>-ch3.
  ENDLOOP.
  SELECT * FROM dbtab INTO TABLE lt_dbtab WHERE bcode IN s_num.
matt