ABAP Select data from SAP table FKKNRP_OBJ into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKKNRP_OBJ
*  INTO TABLE @DATA(IT_FKKNRP_OBJ2).
*--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_FKKNRP_OBJ INDEX 1 INTO DATA(WA_FKKNRP_OBJ2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKKNRP_OBJ>-KEYN1 = 1.
<FKKNRP_OBJ>-POSNA = 1.
<FKKNRP_OBJ>-AENAM = 1.
<FKKNRP_OBJ>-AEDAT = 1.
<FKKNRP_OBJ>-AETIM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKKNRP_OBJ-XMDCH, sy-vline,
  WA_FKKNRP_OBJ-FLGRD, sy-vline,
  WA_FKKNRP_OBJ-STANP, sy-vline,
  WA_FKKNRP_OBJ-FLINS, sy-vline,
  WA_FKKNRP_OBJ-GPART, sy-vline,
  WA_FKKNRP_OBJ-VKONT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKKNRP_OBJ 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_FKKNRP_OBJ 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_FKKNRP_OBJ INTO WA_FKKNRP_OBJ.


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

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

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

*Conversion exit ALPHA, internal->external for field ABWBP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKKNRP_OBJ-ABWBP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKNRP_OBJ-ABWBP.
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_FKKNRP_OBJ_STR, 
KEYN1 TYPE STRING,
POSNA TYPE STRING,
AENAM TYPE STRING,
AEDAT TYPE STRING,
AETIM TYPE STRING,
XMDCH TYPE STRING,
FLGRD TYPE STRING,
STANP TYPE STRING,
FLINS TYPE STRING,
GPART TYPE STRING,
VKONT TYPE STRING,
VTREF TYPE STRING,
SUBAP TYPE STRING,
BKVID TYPE STRING,
VALDT TYPE STRING,
BKVID_DEL TYPE STRING,
ABWBP TYPE STRING,
BANKS_O TYPE STRING,
BANKL_O TYPE STRING,
BANKN_O TYPE STRING,
BKONT_O TYPE STRING,
BKREF_O TYPE STRING,
KOINH_O TYPE STRING,
IBAN_O TYPE STRING,
BANKS_N TYPE STRING,
BANKL_N TYPE STRING,
BANKN_N TYPE STRING,
BKONT_N TYPE STRING,
BKREF_N TYPE STRING,
KOINH_N TYPE STRING,
IBAN_N TYPE STRING,
NAME_LAST TYPE STRING,
NAME_FIRST TYPE STRING,
EBVTY TYPE STRING,
ABVTY TYPE STRING,
EBVTY_VT TYPE STRING,
ABVTY_VT TYPE STRING,
ERTXT TYPE STRING,
INFOF TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKKNRP_OBJ_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_FKKNRP_OBJ_STR-KEYN1 sy-vline 
WA_FKKNRP_OBJ_STR-POSNA sy-vline 
WA_FKKNRP_OBJ_STR-AENAM sy-vline 
WA_FKKNRP_OBJ_STR-AEDAT sy-vline 
WA_FKKNRP_OBJ_STR-AETIM sy-vline 
WA_FKKNRP_OBJ_STR-XMDCH sy-vline 
WA_FKKNRP_OBJ_STR-FLGRD sy-vline 
WA_FKKNRP_OBJ_STR-STANP sy-vline 
WA_FKKNRP_OBJ_STR-FLINS sy-vline 
WA_FKKNRP_OBJ_STR-GPART sy-vline 
WA_FKKNRP_OBJ_STR-VKONT sy-vline 
WA_FKKNRP_OBJ_STR-VTREF sy-vline 
WA_FKKNRP_OBJ_STR-SUBAP sy-vline 
WA_FKKNRP_OBJ_STR-BKVID sy-vline 
WA_FKKNRP_OBJ_STR-VALDT sy-vline 
WA_FKKNRP_OBJ_STR-BKVID_DEL sy-vline 
WA_FKKNRP_OBJ_STR-ABWBP sy-vline 
WA_FKKNRP_OBJ_STR-BANKS_O sy-vline 
WA_FKKNRP_OBJ_STR-BANKL_O sy-vline 
WA_FKKNRP_OBJ_STR-BANKN_O sy-vline 
WA_FKKNRP_OBJ_STR-BKONT_O sy-vline 
WA_FKKNRP_OBJ_STR-BKREF_O sy-vline 
WA_FKKNRP_OBJ_STR-KOINH_O sy-vline 
WA_FKKNRP_OBJ_STR-IBAN_O sy-vline 
WA_FKKNRP_OBJ_STR-BANKS_N sy-vline 
WA_FKKNRP_OBJ_STR-BANKL_N sy-vline 
WA_FKKNRP_OBJ_STR-BANKN_N sy-vline 
WA_FKKNRP_OBJ_STR-BKONT_N sy-vline 
WA_FKKNRP_OBJ_STR-BKREF_N sy-vline 
WA_FKKNRP_OBJ_STR-KOINH_N sy-vline 
WA_FKKNRP_OBJ_STR-IBAN_N sy-vline 
WA_FKKNRP_OBJ_STR-NAME_LAST sy-vline 
WA_FKKNRP_OBJ_STR-NAME_FIRST sy-vline 
WA_FKKNRP_OBJ_STR-EBVTY sy-vline 
WA_FKKNRP_OBJ_STR-ABVTY sy-vline 
WA_FKKNRP_OBJ_STR-EBVTY_VT sy-vline 
WA_FKKNRP_OBJ_STR-ABVTY_VT sy-vline 
WA_FKKNRP_OBJ_STR-ERTXT sy-vline 
WA_FKKNRP_OBJ_STR-INFOF sy-vline      INTO ld_text SEPARATED BY SPACE.

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