ABAP Select data from SAP table DFKKDDA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DFKKDDA
*  INTO TABLE @DATA(IT_DFKKDDA2).
*--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_DFKKDDA INDEX 1 INTO DATA(WA_DFKKDDA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DFKKDDA>-MANDT = 1.
<DFKKDDA>-GPART = 1.
<DFKKDDA>-PYGRP = 1.
<DFKKDDA>-FAEDN = 1.
<DFKKDDA>-WAERS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DFKKDDA-BETRW, sy-vline,
  WA_DFKKDDA-ERNAM, sy-vline,
  WA_DFKKDDA-CPUDT, sy-vline,
  WA_DFKKDDA-CPUTM, sy-vline,
  WA_DFKKDDA-STDDA, sy-vline,
  WA_DFKKDDA-DOC1R, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DFKKDDA 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_DFKKDDA 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_DFKKDDA INTO WA_DFKKDDA.


*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_DFKKDDA-GPART
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DFKKDDA-GPART.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field VTREF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DFKKDDA-VTREF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DFKKDDA-VTREF.
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_DFKKDDA_STR, 
MANDT TYPE STRING,
GPART TYPE STRING,
PYGRP TYPE STRING,
FAEDN TYPE STRING,
WAERS TYPE STRING,
BETRW TYPE STRING,
ERNAM TYPE STRING,
CPUDT TYPE STRING,
CPUTM TYPE STRING,
STDDA TYPE STRING,
DOC1R TYPE STRING,
DOC1T TYPE STRING,
PYMET TYPE STRING,
COTYP TYPE STRING,
COKEY TYPE STRING,
LAUFD TYPE STRING,
LAUFI TYPE STRING,
AENAM TYPE STRING,
AEDAT TYPE STRING,
AETIM TYPE STRING,
APPLK TYPE STRING,
VKONT TYPE STRING,
VTREF TYPE STRING,
OPBUK TYPE STRING,
EIGBV TYPE STRING,
ZBNKS TYPE STRING,
ZBNKL TYPE STRING,
ZBNKN TYPE STRING,
ZBKON TYPE STRING,
ZBKRF TYPE STRING,
ZBKIN TYPE STRING,
XFORC TYPE STRING,
DDTXT TYPE STRING,
MASTT TYPE STRING,
MASTR TYPE STRING,
AKTYP TYPE STRING,
MNDID TYPE STRING,
LAUFD_CRE TYPE STRING,
LAUFI_CRE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DFKKDDA_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_DFKKDDA_STR-MANDT sy-vline 
WA_DFKKDDA_STR-GPART sy-vline 
WA_DFKKDDA_STR-PYGRP sy-vline 
WA_DFKKDDA_STR-FAEDN sy-vline 
WA_DFKKDDA_STR-WAERS sy-vline 
WA_DFKKDDA_STR-BETRW sy-vline 
WA_DFKKDDA_STR-ERNAM sy-vline 
WA_DFKKDDA_STR-CPUDT sy-vline 
WA_DFKKDDA_STR-CPUTM sy-vline 
WA_DFKKDDA_STR-STDDA sy-vline 
WA_DFKKDDA_STR-DOC1R sy-vline 
WA_DFKKDDA_STR-DOC1T sy-vline 
WA_DFKKDDA_STR-PYMET sy-vline 
WA_DFKKDDA_STR-COTYP sy-vline 
WA_DFKKDDA_STR-COKEY sy-vline 
WA_DFKKDDA_STR-LAUFD sy-vline 
WA_DFKKDDA_STR-LAUFI sy-vline 
WA_DFKKDDA_STR-AENAM sy-vline 
WA_DFKKDDA_STR-AEDAT sy-vline 
WA_DFKKDDA_STR-AETIM sy-vline 
WA_DFKKDDA_STR-APPLK sy-vline 
WA_DFKKDDA_STR-VKONT sy-vline 
WA_DFKKDDA_STR-VTREF sy-vline 
WA_DFKKDDA_STR-OPBUK sy-vline 
WA_DFKKDDA_STR-EIGBV sy-vline 
WA_DFKKDDA_STR-ZBNKS sy-vline 
WA_DFKKDDA_STR-ZBNKL sy-vline 
WA_DFKKDDA_STR-ZBNKN sy-vline 
WA_DFKKDDA_STR-ZBKON sy-vline 
WA_DFKKDDA_STR-ZBKRF sy-vline 
WA_DFKKDDA_STR-ZBKIN sy-vline 
WA_DFKKDDA_STR-XFORC sy-vline 
WA_DFKKDDA_STR-DDTXT sy-vline 
WA_DFKKDDA_STR-MASTT sy-vline 
WA_DFKKDDA_STR-MASTR sy-vline 
WA_DFKKDDA_STR-AKTYP sy-vline 
WA_DFKKDDA_STR-MNDID sy-vline 
WA_DFKKDDA_STR-LAUFD_CRE sy-vline 
WA_DFKKDDA_STR-LAUFI_CRE sy-vline      INTO ld_text SEPARATED BY SPACE.

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