ABAP Select data from SAP table HUHDR_ADDITIONAL_DATA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HUHDR_ADDITIONAL_DATA
*  INTO TABLE @DATA(IT_HUHDR_ADDITIONAL_DATA2).
*--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_HUHDR_ADDITIONAL_DATA INDEX 1 INTO DATA(WA_HUHDR_ADDITIONAL_DATA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HUHDR_ADDITIONAL_DATA>-EXIDV = 1.
<HUHDR_ADDITIONAL_DATA>-WERKS = 1.
<HUHDR_ADDITIONAL_DATA>-LGORT = 1.
<HUHDR_ADDITIONAL_DATA>-EXIDV2 = 1.
<HUHDR_ADDITIONAL_DATA>-INHALT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HUHDR_ADDITIONAL_DATA-ERLKZ, sy-vline,
  WA_HUHDR_ADDITIONAL_DATA-SORTL, sy-vline,
  WA_HUHDR_ADDITIONAL_DATA-VEGR1, sy-vline,
  WA_HUHDR_ADDITIONAL_DATA-VEGR2, sy-vline,
  WA_HUHDR_ADDITIONAL_DATA-VEGR3, sy-vline,
  WA_HUHDR_ADDITIONAL_DATA-VEGR4, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HUHDR_ADDITIONAL_DATA 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_HUHDR_ADDITIONAL_DATA 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_HUHDR_ADDITIONAL_DATA INTO WA_HUHDR_ADDITIONAL_DATA.


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

*Conversion exit ALPHA, internal->external for field EXIDV2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_HUHDR_ADDITIONAL_DATA-EXIDV2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_HUHDR_ADDITIONAL_DATA-EXIDV2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit VHUPI, internal->external for field PACKVORSCHR
CALL FUNCTION 'CONVERSION_EXIT_VHUPI_OUTPUT'
  EXPORTING
    input =                      WA_HUHDR_ADDITIONAL_DATA-PACKVORSCHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_HUHDR_ADDITIONAL_DATA-PACKVORSCHR.
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_HUHDR_ADDITIONAL_DATA_STR, 
EXIDV TYPE STRING,
WERKS TYPE STRING,
LGORT TYPE STRING,
EXIDV2 TYPE STRING,
INHALT TYPE STRING,
ERLKZ TYPE STRING,
SORTL TYPE STRING,
VEGR1 TYPE STRING,
VEGR2 TYPE STRING,
VEGR3 TYPE STRING,
VEGR4 TYPE STRING,
VEGR5 TYPE STRING,
PACKVORSCHR TYPE STRING,
PACKVORSCHR_ST TYPE STRING,
LABELTYP TYPE STRING,
ZUL_AUFL TYPE STRING,
ERNAM TYPE STRING,
ERDAT TYPE STRING,
VHILM_KU TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HUHDR_ADDITIONAL_DATA_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_HUHDR_ADDITIONAL_DATA_STR-EXIDV sy-vline 
WA_HUHDR_ADDITIONAL_DATA_STR-WERKS sy-vline 
WA_HUHDR_ADDITIONAL_DATA_STR-LGORT sy-vline 
WA_HUHDR_ADDITIONAL_DATA_STR-EXIDV2 sy-vline 
WA_HUHDR_ADDITIONAL_DATA_STR-INHALT sy-vline 
WA_HUHDR_ADDITIONAL_DATA_STR-ERLKZ sy-vline 
WA_HUHDR_ADDITIONAL_DATA_STR-SORTL sy-vline 
WA_HUHDR_ADDITIONAL_DATA_STR-VEGR1 sy-vline 
WA_HUHDR_ADDITIONAL_DATA_STR-VEGR2 sy-vline 
WA_HUHDR_ADDITIONAL_DATA_STR-VEGR3 sy-vline 
WA_HUHDR_ADDITIONAL_DATA_STR-VEGR4 sy-vline 
WA_HUHDR_ADDITIONAL_DATA_STR-VEGR5 sy-vline 
WA_HUHDR_ADDITIONAL_DATA_STR-PACKVORSCHR sy-vline 
WA_HUHDR_ADDITIONAL_DATA_STR-PACKVORSCHR_ST sy-vline 
WA_HUHDR_ADDITIONAL_DATA_STR-LABELTYP sy-vline 
WA_HUHDR_ADDITIONAL_DATA_STR-ZUL_AUFL sy-vline 
WA_HUHDR_ADDITIONAL_DATA_STR-ERNAM sy-vline 
WA_HUHDR_ADDITIONAL_DATA_STR-ERDAT sy-vline 
WA_HUHDR_ADDITIONAL_DATA_STR-VHILM_KU sy-vline      INTO ld_text SEPARATED BY SPACE.

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