ABAP Select data from SAP table FKK_CRM_DUN_HEADER into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKK_CRM_DUN_HEADER
*  INTO TABLE @DATA(IT_FKK_CRM_DUN_HEADER2).
*--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_FKK_CRM_DUN_HEADER INDEX 1 INTO DATA(WA_FKK_CRM_DUN_HEADER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKK_CRM_DUN_HEADER>-LAUFD = 1.
<FKK_CRM_DUN_HEADER>-LAUFI = 1.
<FKK_CRM_DUN_HEADER>-GPART = 1.
<FKK_CRM_DUN_HEADER>-VKONT = 1.
<FKK_CRM_DUN_HEADER>-MAZAE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKK_CRM_DUN_HEADER-AUSDT, sy-vline,
  WA_FKK_CRM_DUN_HEADER-MDRKD, sy-vline,
  WA_FKK_CRM_DUN_HEADER-MAHNV, sy-vline,
  WA_FKK_CRM_DUN_HEADER-GSBER, sy-vline,
  WA_FKK_CRM_DUN_HEADER-SPART, sy-vline,
  WA_FKK_CRM_DUN_HEADER-VTREF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKK_CRM_DUN_HEADER 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_FKK_CRM_DUN_HEADER 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_FKK_CRM_DUN_HEADER INTO WA_FKK_CRM_DUN_HEADER.


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

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

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

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

*Conversion exit ALPHA, internal->external for field MG1BL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKK_CRM_DUN_HEADER-MG1BL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKK_CRM_DUN_HEADER-MG1BL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field MG2BL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKK_CRM_DUN_HEADER-MG2BL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKK_CRM_DUN_HEADER-MG2BL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field MG3BL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKK_CRM_DUN_HEADER-MG3BL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKK_CRM_DUN_HEADER-MG3BL.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field NRZAS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKK_CRM_DUN_HEADER-NRZAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKK_CRM_DUN_HEADER-NRZAS.
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_FKK_CRM_DUN_HEADER_STR, 
LAUFD TYPE STRING,
LAUFI TYPE STRING,
GPART TYPE STRING,
VKONT TYPE STRING,
MAZAE TYPE STRING,
AUSDT TYPE STRING,
MDRKD TYPE STRING,
MAHNV TYPE STRING,
GSBER TYPE STRING,
SPART TYPE STRING,
VTREF TYPE STRING,
MAHNS TYPE STRING,
MSTYP TYPE STRING,
WAERS TYPE STRING,
MSALM TYPE STRING,
ABWMA TYPE STRING,
MGE1M TYPE STRING,
MG1BL TYPE STRING,
MG1TYTXT TYPE STRING,
MGE2M TYPE STRING,
MG2BL TYPE STRING,
MG2TYTXT TYPE STRING,
MGE3M TYPE STRING,
MG3BL TYPE STRING,
MG3TYTXT TYPE STRING,
MINTM TYPE STRING,
MIBEL TYPE STRING,
XMSTO TYPE STRING,
NRZAS TYPE STRING,
FRDAT TYPE STRING,
XINFG TYPE STRING,
XCOLL TYPE STRING,
RFZAS TYPE STRING,
TODAT TYPE STRING,
MAHNVTXT TYPE STRING,
MAHNSTXT TYPE STRING,
MSTYPTXT TYPE STRING,
MVTYPTXT TYPE STRING,
DOCPATH TYPE STRING,
XURL TYPE STRING,
RSALM TYPE STRING,
CMGRP TYPE STRING,
CGICON TYPE STRING,
WLICON TYPE STRING,
VKONTGRP TYPE STRING,
VTREFGRP TYPE STRING,
ITEMGRP TYPE STRING,
GRPFIELD TYPE STRING,
STRAT TYPE STRING,
STEP TYPE STRING,
STEPLEVEL TYPE STRING,
STRAT_CHAMP TYPE STRING,
TESTS TYPE STRING,
TESTSDESCR TYPE STRING,
NEXDT TYPE STRING,
IDISP2 TYPE STRING,
SUBAP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKK_CRM_DUN_HEADER_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_FKK_CRM_DUN_HEADER_STR-LAUFD sy-vline 
WA_FKK_CRM_DUN_HEADER_STR-LAUFI sy-vline 
WA_FKK_CRM_DUN_HEADER_STR-GPART sy-vline 
WA_FKK_CRM_DUN_HEADER_STR-VKONT sy-vline 
WA_FKK_CRM_DUN_HEADER_STR-MAZAE sy-vline 
WA_FKK_CRM_DUN_HEADER_STR-AUSDT sy-vline 
WA_FKK_CRM_DUN_HEADER_STR-MDRKD sy-vline 
WA_FKK_CRM_DUN_HEADER_STR-MAHNV sy-vline 
WA_FKK_CRM_DUN_HEADER_STR-GSBER sy-vline 
WA_FKK_CRM_DUN_HEADER_STR-SPART sy-vline 
WA_FKK_CRM_DUN_HEADER_STR-VTREF sy-vline 
WA_FKK_CRM_DUN_HEADER_STR-MAHNS sy-vline 
WA_FKK_CRM_DUN_HEADER_STR-MSTYP sy-vline 
WA_FKK_CRM_DUN_HEADER_STR-WAERS sy-vline 
WA_FKK_CRM_DUN_HEADER_STR-MSALM sy-vline 
WA_FKK_CRM_DUN_HEADER_STR-ABWMA sy-vline 
WA_FKK_CRM_DUN_HEADER_STR-MGE1M sy-vline 
WA_FKK_CRM_DUN_HEADER_STR-MG1BL sy-vline 
WA_FKK_CRM_DUN_HEADER_STR-MG1TYTXT sy-vline 
WA_FKK_CRM_DUN_HEADER_STR-MGE2M sy-vline 
WA_FKK_CRM_DUN_HEADER_STR-MG2BL sy-vline 
WA_FKK_CRM_DUN_HEADER_STR-MG2TYTXT sy-vline 
WA_FKK_CRM_DUN_HEADER_STR-MGE3M sy-vline 
WA_FKK_CRM_DUN_HEADER_STR-MG3BL sy-vline 
WA_FKK_CRM_DUN_HEADER_STR-MG3TYTXT sy-vline 
WA_FKK_CRM_DUN_HEADER_STR-MINTM sy-vline 
WA_FKK_CRM_DUN_HEADER_STR-MIBEL sy-vline 
WA_FKK_CRM_DUN_HEADER_STR-XMSTO sy-vline 
WA_FKK_CRM_DUN_HEADER_STR-NRZAS sy-vline 
WA_FKK_CRM_DUN_HEADER_STR-FRDAT sy-vline 
WA_FKK_CRM_DUN_HEADER_STR-XINFG sy-vline 
WA_FKK_CRM_DUN_HEADER_STR-XCOLL sy-vline 
WA_FKK_CRM_DUN_HEADER_STR-RFZAS sy-vline 
WA_FKK_CRM_DUN_HEADER_STR-TODAT sy-vline 
WA_FKK_CRM_DUN_HEADER_STR-MAHNVTXT sy-vline 
WA_FKK_CRM_DUN_HEADER_STR-MAHNSTXT sy-vline 
WA_FKK_CRM_DUN_HEADER_STR-MSTYPTXT sy-vline 
WA_FKK_CRM_DUN_HEADER_STR-MVTYPTXT sy-vline 
WA_FKK_CRM_DUN_HEADER_STR-DOCPATH sy-vline 
WA_FKK_CRM_DUN_HEADER_STR-XURL sy-vline 
WA_FKK_CRM_DUN_HEADER_STR-RSALM sy-vline 
WA_FKK_CRM_DUN_HEADER_STR-CMGRP sy-vline 
WA_FKK_CRM_DUN_HEADER_STR-CGICON sy-vline 
WA_FKK_CRM_DUN_HEADER_STR-WLICON sy-vline 
WA_FKK_CRM_DUN_HEADER_STR-VKONTGRP sy-vline 
WA_FKK_CRM_DUN_HEADER_STR-VTREFGRP sy-vline 
WA_FKK_CRM_DUN_HEADER_STR-ITEMGRP sy-vline 
WA_FKK_CRM_DUN_HEADER_STR-GRPFIELD sy-vline 
WA_FKK_CRM_DUN_HEADER_STR-STRAT sy-vline 
WA_FKK_CRM_DUN_HEADER_STR-STEP sy-vline 
WA_FKK_CRM_DUN_HEADER_STR-STEPLEVEL sy-vline 
WA_FKK_CRM_DUN_HEADER_STR-STRAT_CHAMP sy-vline 
WA_FKK_CRM_DUN_HEADER_STR-TESTS sy-vline 
WA_FKK_CRM_DUN_HEADER_STR-TESTSDESCR sy-vline 
WA_FKK_CRM_DUN_HEADER_STR-NEXDT sy-vline 
WA_FKK_CRM_DUN_HEADER_STR-IDISP2 sy-vline 
WA_FKK_CRM_DUN_HEADER_STR-SUBAP sy-vline      INTO ld_text SEPARATED BY SPACE.

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