ABAP Select data from SAP table VPPE_D_ITEM_LIST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VPPE_D_ITEM_LIST
*  INTO TABLE @DATA(IT_VPPE_D_ITEM_LIST2).
*--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_VPPE_D_ITEM_LIST INDEX 1 INTO DATA(WA_VPPE_D_ITEM_LIST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VPPE_D_ITEM_LIST>-MANDT = 1.
<VPPE_D_ITEM_LIST>-DOC_TYPE = 1.
<VPPE_D_ITEM_LIST>-DOC_NO = 1.
<VPPE_D_ITEM_LIST>-DOC_ITEM_NO = 1.
<VPPE_D_ITEM_LIST>-EVENT_NO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VPPE_D_ITEM_LIST-GUID, sy-vline,
  WA_VPPE_D_ITEM_LIST-EVENT, sy-vline,
  WA_VPPE_D_ITEM_LIST-PLANNED_DATE, sy-vline,
  WA_VPPE_D_ITEM_LIST-ACTUAL_DATE, sy-vline,
  WA_VPPE_D_ITEM_LIST-REF_EVENT_RULE, sy-vline,
  WA_VPPE_D_ITEM_LIST-REF_EVENT_NO1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VPPE_D_ITEM_LIST 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_VPPE_D_ITEM_LIST 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_VPPE_D_ITEM_LIST INTO WA_VPPE_D_ITEM_LIST.


*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 EVENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VPPE_D_ITEM_LIST-EVENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VPPE_D_ITEM_LIST-EVENT.
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_VPPE_D_ITEM_LIST_STR, 
MANDT TYPE STRING,
DOC_TYPE TYPE STRING,
DOC_NO TYPE STRING,
DOC_ITEM_NO TYPE STRING,
EVENT_NO TYPE STRING,
GUID TYPE STRING,
EVENT TYPE STRING,
PLANNED_DATE TYPE STRING,
ACTUAL_DATE TYPE STRING,
REF_EVENT_RULE TYPE STRING,
REF_EVENT_NO1 TYPE STRING,
DAY_OFFSET_1 TYPE STRING,
REF_EVENT_NO2 TYPE STRING,
DAY_OFFSET_2 TYPE STRING,
ZTERM TYPE STRING,
CR_NAME TYPE STRING,
CR_DATE TYPE STRING,
CR_TIME TYPE STRING,
CH_NAME TYPE STRING,
CH_DATE TYPE STRING,
CH_TIME TYPE STRING,
ROOT_DOC_TYPE TYPE STRING,
ROOT_DOC_NO TYPE STRING,
ROOT_DOC_ITEM_NO TYPE STRING,
GROUP_CODE TYPE STRING,
CONTRACTUAL TYPE STRING,
EXT_REFERENCE TYPE STRING,
_DATAAGING TYPE STRING,
KZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VPPE_D_ITEM_LIST_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_VPPE_D_ITEM_LIST_STR-MANDT sy-vline 
WA_VPPE_D_ITEM_LIST_STR-DOC_TYPE sy-vline 
WA_VPPE_D_ITEM_LIST_STR-DOC_NO sy-vline 
WA_VPPE_D_ITEM_LIST_STR-DOC_ITEM_NO sy-vline 
WA_VPPE_D_ITEM_LIST_STR-EVENT_NO sy-vline 
WA_VPPE_D_ITEM_LIST_STR-GUID sy-vline 
WA_VPPE_D_ITEM_LIST_STR-EVENT sy-vline 
WA_VPPE_D_ITEM_LIST_STR-PLANNED_DATE sy-vline 
WA_VPPE_D_ITEM_LIST_STR-ACTUAL_DATE sy-vline 
WA_VPPE_D_ITEM_LIST_STR-REF_EVENT_RULE sy-vline 
WA_VPPE_D_ITEM_LIST_STR-REF_EVENT_NO1 sy-vline 
WA_VPPE_D_ITEM_LIST_STR-DAY_OFFSET_1 sy-vline 
WA_VPPE_D_ITEM_LIST_STR-REF_EVENT_NO2 sy-vline 
WA_VPPE_D_ITEM_LIST_STR-DAY_OFFSET_2 sy-vline 
WA_VPPE_D_ITEM_LIST_STR-ZTERM sy-vline 
WA_VPPE_D_ITEM_LIST_STR-CR_NAME sy-vline 
WA_VPPE_D_ITEM_LIST_STR-CR_DATE sy-vline 
WA_VPPE_D_ITEM_LIST_STR-CR_TIME sy-vline 
WA_VPPE_D_ITEM_LIST_STR-CH_NAME sy-vline 
WA_VPPE_D_ITEM_LIST_STR-CH_DATE sy-vline 
WA_VPPE_D_ITEM_LIST_STR-CH_TIME sy-vline 
WA_VPPE_D_ITEM_LIST_STR-ROOT_DOC_TYPE sy-vline 
WA_VPPE_D_ITEM_LIST_STR-ROOT_DOC_NO sy-vline 
WA_VPPE_D_ITEM_LIST_STR-ROOT_DOC_ITEM_NO sy-vline 
WA_VPPE_D_ITEM_LIST_STR-GROUP_CODE sy-vline 
WA_VPPE_D_ITEM_LIST_STR-CONTRACTUAL sy-vline 
WA_VPPE_D_ITEM_LIST_STR-EXT_REFERENCE sy-vline 
WA_VPPE_D_ITEM_LIST_STR-_DATAAGING sy-vline 
WA_VPPE_D_ITEM_LIST_STR-KZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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