ABAP Select data from SAP table FKKOP_FOREIGN into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FKKOP_FOREIGN 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 FKKOP_FOREIGN. 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 FKKOP_FOREIGN 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_FKKOP_FOREIGN TYPE STANDARD TABLE OF FKKOP_FOREIGN,
      WA_FKKOP_FOREIGN TYPE FKKOP_FOREIGN,
      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: <FKKOP_FOREIGN> TYPE FKKOP_FOREIGN.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKKOP_FOREIGN
*  INTO TABLE @DATA(IT_FKKOP_FOREIGN2).
*--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_FKKOP_FOREIGN INDEX 1 INTO DATA(WA_FKKOP_FOREIGN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKKOP_FOREIGN>-COUNTRY = 1.
<FKKOP_FOREIGN>-FOR1 = 1.
<FKKOP_FOREIGN>-FOR2 = 1.
<FKKOP_FOREIGN>-FORANZA = 1.
<FKKOP_FOREIGN>-VER1 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKKOP_FOREIGN-VER2, sy-vline,
  WA_FKKOP_FOREIGN-VERANZA, sy-vline,
  WA_FKKOP_FOREIGN-WAERS, sy-vline,
  WA_FKKOP_FOREIGN-FOR1H, sy-vline,
  WA_FKKOP_FOREIGN-FOR2H, sy-vline,
  WA_FKKOP_FOREIGN-FORANZAH, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKKOP_FOREIGN 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_FKKOP_FOREIGN 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_FKKOP_FOREIGN INTO WA_FKKOP_FOREIGN.


*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.
ENDFORM. 

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

TYPES: BEGIN OF T_FKKOP_FOREIGN_STR, 
COUNTRY TYPE STRING,
FOR1 TYPE STRING,
FOR2 TYPE STRING,
FORANZA TYPE STRING,
VER1 TYPE STRING,
VER2 TYPE STRING,
VERANZA TYPE STRING,
WAERS TYPE STRING,
FOR1H TYPE STRING,
FOR2H TYPE STRING,
FORANZAH TYPE STRING,
VER1H TYPE STRING,
VER2H TYPE STRING,
VERANZAH TYPE STRING,
WAERH TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKKOP_FOREIGN_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_FKKOP_FOREIGN_STR-COUNTRY sy-vline 
WA_FKKOP_FOREIGN_STR-FOR1 sy-vline 
WA_FKKOP_FOREIGN_STR-FOR2 sy-vline 
WA_FKKOP_FOREIGN_STR-FORANZA sy-vline 
WA_FKKOP_FOREIGN_STR-VER1 sy-vline 
WA_FKKOP_FOREIGN_STR-VER2 sy-vline 
WA_FKKOP_FOREIGN_STR-VERANZA sy-vline 
WA_FKKOP_FOREIGN_STR-WAERS sy-vline 
WA_FKKOP_FOREIGN_STR-FOR1H sy-vline 
WA_FKKOP_FOREIGN_STR-FOR2H sy-vline 
WA_FKKOP_FOREIGN_STR-FORANZAH sy-vline 
WA_FKKOP_FOREIGN_STR-VER1H sy-vline 
WA_FKKOP_FOREIGN_STR-VER2H sy-vline 
WA_FKKOP_FOREIGN_STR-VERANZAH sy-vline 
WA_FKKOP_FOREIGN_STR-WAERH sy-vline      INTO ld_text SEPARATED BY SPACE.

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