ABAP Select data from SAP table RFKKZA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RFKKZA
*  INTO TABLE @DATA(IT_RFKKZA2).
*--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_RFKKZA INDEX 1 INTO DATA(WA_RFKKZA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RFKKZA>-STARA_ICON = 1.
<RFKKZA>-MANDT = 1.
<RFKKZA>-NRZAA = 1.
<RFKKZA>-BUKRS = 1.
<RFKKZA>-PYBUK = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RFKKZA-WAERS, sy-vline,
  WA_RFKKZA-BETRW, sy-vline,
  WA_RFKKZA-BETRH, sy-vline,
  WA_RFKKZA-BETR2, sy-vline,
  WA_RFKKZA-BETR3, sy-vline,
  WA_RFKKZA-FAEDN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RFKKZA 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_RFKKZA 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_RFKKZA INTO WA_RFKKZA.


*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 NRZAA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RFKKZA-NRZAA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFKKZA-NRZAA.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit ALPHA, internal->external for field ANFBL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RFKKZA-ANFBL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFKKZA-ANFBL.
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_RFKKZA_STR, 
STARA_ICON TYPE STRING,
MANDT TYPE STRING,
NRZAA TYPE STRING,
BUKRS TYPE STRING,
PYBUK TYPE STRING,
WAERS TYPE STRING,
BETRW TYPE STRING,
BETRH TYPE STRING,
BETR2 TYPE STRING,
BETR3 TYPE STRING,
FAEDN TYPE STRING,
BANKS TYPE STRING,
BANKL TYPE STRING,
BANKN TYPE STRING,
BKONT TYPE STRING,
BKREF TYPE STRING,
XPGRO TYPE STRING,
KOINH TYPE STRING,
HBKID TYPE STRING,
HKTID TYPE STRING,
PYMET TYPE STRING,
GSBER TYPE STRING,
SEGMENT TYPE STRING,
PRCTR TYPE STRING,
HKONT TYPE STRING,
PYBEL TYPE STRING,
BUDAT TYPE STRING,
ERNAM TYPE STRING,
CPUDT TYPE STRING,
CPUTM TYPE STRING,
STARA TYPE STRING,
TXTVW TYPE STRING,
APPLK TYPE STRING,
ANFBL TYPE STRING,
SPZAH TYPE STRING,
AENAM TYPE STRING,
AEDAT TYPE STRING,
AETIM TYPE STRING,
C4EYE TYPE STRING,
XADRX TYPE STRING,
XABWB TYPE STRING,
IBAN TYPE STRING,
SWIFT TYPE STRING,
NAME1 TYPE STRING,
NAME2 TYPE STRING,
POST_CODE1 TYPE STRING,
CITY1 TYPE STRING,
STREET TYPE STRING,
HOUSE_NUM1 TYPE STRING,
FIKEY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RFKKZA_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_RFKKZA_STR-STARA_ICON sy-vline 
WA_RFKKZA_STR-MANDT sy-vline 
WA_RFKKZA_STR-NRZAA sy-vline 
WA_RFKKZA_STR-BUKRS sy-vline 
WA_RFKKZA_STR-PYBUK sy-vline 
WA_RFKKZA_STR-WAERS sy-vline 
WA_RFKKZA_STR-BETRW sy-vline 
WA_RFKKZA_STR-BETRH sy-vline 
WA_RFKKZA_STR-BETR2 sy-vline 
WA_RFKKZA_STR-BETR3 sy-vline 
WA_RFKKZA_STR-FAEDN sy-vline 
WA_RFKKZA_STR-BANKS sy-vline 
WA_RFKKZA_STR-BANKL sy-vline 
WA_RFKKZA_STR-BANKN sy-vline 
WA_RFKKZA_STR-BKONT sy-vline 
WA_RFKKZA_STR-BKREF sy-vline 
WA_RFKKZA_STR-XPGRO sy-vline 
WA_RFKKZA_STR-KOINH sy-vline 
WA_RFKKZA_STR-HBKID sy-vline 
WA_RFKKZA_STR-HKTID sy-vline 
WA_RFKKZA_STR-PYMET sy-vline 
WA_RFKKZA_STR-GSBER sy-vline 
WA_RFKKZA_STR-SEGMENT sy-vline 
WA_RFKKZA_STR-PRCTR sy-vline 
WA_RFKKZA_STR-HKONT sy-vline 
WA_RFKKZA_STR-PYBEL sy-vline 
WA_RFKKZA_STR-BUDAT sy-vline 
WA_RFKKZA_STR-ERNAM sy-vline 
WA_RFKKZA_STR-CPUDT sy-vline 
WA_RFKKZA_STR-CPUTM sy-vline 
WA_RFKKZA_STR-STARA sy-vline 
WA_RFKKZA_STR-TXTVW sy-vline 
WA_RFKKZA_STR-APPLK sy-vline 
WA_RFKKZA_STR-ANFBL sy-vline 
WA_RFKKZA_STR-SPZAH sy-vline 
WA_RFKKZA_STR-AENAM sy-vline 
WA_RFKKZA_STR-AEDAT sy-vline 
WA_RFKKZA_STR-AETIM sy-vline 
WA_RFKKZA_STR-C4EYE sy-vline 
WA_RFKKZA_STR-XADRX sy-vline 
WA_RFKKZA_STR-XABWB sy-vline 
WA_RFKKZA_STR-IBAN sy-vline 
WA_RFKKZA_STR-SWIFT sy-vline 
WA_RFKKZA_STR-NAME1 sy-vline 
WA_RFKKZA_STR-NAME2 sy-vline 
WA_RFKKZA_STR-POST_CODE1 sy-vline 
WA_RFKKZA_STR-CITY1 sy-vline 
WA_RFKKZA_STR-STREET sy-vline 
WA_RFKKZA_STR-HOUSE_NUM1 sy-vline 
WA_RFKKZA_STR-FIKEY sy-vline      INTO ld_text SEPARATED BY SPACE.

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