ABAP Select data from SAP table KFPP_EXIT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP KFPP_EXIT table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to KFPP_EXIT. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the KFPP_EXIT table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_KFPP_EXIT TYPE STANDARD TABLE OF KFPP_EXIT,
      WA_KFPP_EXIT TYPE KFPP_EXIT,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <KFPP_EXIT> TYPE KFPP_EXIT.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_KFPP_EXIT.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM KFPP_EXIT
  INTO TABLE IT_KFPP_EXIT.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KFPP_EXIT
*  INTO TABLE @DATA(IT_KFPP_EXIT2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_KFPP_EXIT INDEX 1 INTO DATA(WA_KFPP_EXIT2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_KFPP_EXIT ASSIGNING <KFPP_EXIT>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KFPP_EXIT>-BLPOS = 1.
<KFPP_EXIT>-PTEXT = 1.
<KFPP_EXIT>-ERLKZ = 1.
<KFPP_EXIT>-WTGES = 1.
<KFPP_EXIT>-PRICE = 1.

ENDLOOP.

LOOP AT IT_KFPP_EXIT INTO WA_KFPP_EXIT.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KFPP_EXIT-WAERS, sy-vline,
  WA_KFPP_EXIT-MGGES, sy-vline,
  WA_KFPP_EXIT-MEINH, sy-vline,
  WA_KFPP_EXIT-KSTAR, sy-vline,
  WA_KFPP_EXIT-ERLAR, sy-vline,
  WA_KFPP_EXIT-FDATK, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KFPP_EXIT you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_KFPP_EXIT TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_KFPP_EXIT INTO WA_KFPP_EXIT.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.

*Conversion exit CUNIT, internal->external for field MEINH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_KFPP_EXIT-MEINH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KFPP_EXIT-MEINH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KSTAR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KFPP_EXIT-KSTAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KFPP_EXIT-KSTAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ERLAR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KFPP_EXIT-ERLAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KFPP_EXIT-ERLAR.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_KFPP_EXIT_STR, 
BLPOS TYPE STRING,
PTEXT TYPE STRING,
ERLKZ TYPE STRING,
WTGES TYPE STRING,
PRICE TYPE STRING,
WAERS TYPE STRING,
MGGES TYPE STRING,
MEINH TYPE STRING,
KSTAR TYPE STRING,
ERLAR TYPE STRING,
FDATK TYPE STRING,
MARK TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KFPP_EXIT_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_KFPP_EXIT_STR-BLPOS sy-vline 
WA_KFPP_EXIT_STR-PTEXT sy-vline 
WA_KFPP_EXIT_STR-ERLKZ sy-vline 
WA_KFPP_EXIT_STR-WTGES sy-vline 
WA_KFPP_EXIT_STR-PRICE sy-vline 
WA_KFPP_EXIT_STR-WAERS sy-vline 
WA_KFPP_EXIT_STR-MGGES sy-vline 
WA_KFPP_EXIT_STR-MEINH sy-vline 
WA_KFPP_EXIT_STR-KSTAR sy-vline 
WA_KFPP_EXIT_STR-ERLAR sy-vline 
WA_KFPP_EXIT_STR-FDATK sy-vline 
WA_KFPP_EXIT_STR-MARK sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.