ABAP Select data from SAP table DFKKZA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DFKKZA
*  INTO TABLE @DATA(IT_DFKKZA2).
*--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_DFKKZA INDEX 1 INTO DATA(WA_DFKKZA2).


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

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

ENDLOOP.

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

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


*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_DFKKZA-NRZAA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DFKKZA-NRZAA.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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