ABAP Select data from SAP table AUFK_NODEL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM AUFK_NODEL
*  INTO TABLE @DATA(IT_AUFK_NODEL2).
*--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_AUFK_NODEL INDEX 1 INTO DATA(WA_AUFK_NODEL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<AUFK_NODEL>-MANDT = 1.
<AUFK_NODEL>-AUFNR = 1.
<AUFK_NODEL>-AUART = 1.
<AUFK_NODEL>-AUTYP = 1.
<AUFK_NODEL>-KTEXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_AUFK_NODEL-BUKRS, sy-vline,
  WA_AUFK_NODEL-GSBER, sy-vline,
  WA_AUFK_NODEL-KOKRS, sy-vline,
  WA_AUFK_NODEL-ASTKZ, sy-vline,
  WA_AUFK_NODEL-WAERS, sy-vline,
  WA_AUFK_NODEL-OBJNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_AUFK_NODEL 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_AUFK_NODEL 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_AUFK_NODEL INTO WA_AUFK_NODEL.


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

*Conversion exit ABPSP, internal->external for field PSPEL
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_AUFK_NODEL-PSPEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AUFK_NODEL-PSPEL.
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_AUFK_NODEL_STR, 
MANDT TYPE STRING,
AUFNR TYPE STRING,
AUART TYPE STRING,
AUTYP TYPE STRING,
KTEXT TYPE STRING,
BUKRS TYPE STRING,
GSBER TYPE STRING,
KOKRS TYPE STRING,
ASTKZ TYPE STRING,
WAERS TYPE STRING,
OBJNR TYPE STRING,
KALSM TYPE STRING,
PSPEL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_AUFK_NODEL_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_AUFK_NODEL_STR-MANDT sy-vline 
WA_AUFK_NODEL_STR-AUFNR sy-vline 
WA_AUFK_NODEL_STR-AUART sy-vline 
WA_AUFK_NODEL_STR-AUTYP sy-vline 
WA_AUFK_NODEL_STR-KTEXT sy-vline 
WA_AUFK_NODEL_STR-BUKRS sy-vline 
WA_AUFK_NODEL_STR-GSBER sy-vline 
WA_AUFK_NODEL_STR-KOKRS sy-vline 
WA_AUFK_NODEL_STR-ASTKZ sy-vline 
WA_AUFK_NODEL_STR-WAERS sy-vline 
WA_AUFK_NODEL_STR-OBJNR sy-vline 
WA_AUFK_NODEL_STR-KALSM sy-vline 
WA_AUFK_NODEL_STR-PSPEL sy-vline      INTO ld_text SEPARATED BY SPACE.

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