ABAP Select data from SAP table VPPHDDMRPSTCK into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VPPHDDMRPSTCK
*  INTO TABLE @DATA(IT_VPPHDDMRPSTCK2).
*--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_VPPHDDMRPSTCK INDEX 1 INTO DATA(WA_VPPHDDMRPSTCK2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VPPHDDMRPSTCK>-MANDT = 1.
<VPPHDDMRPSTCK>-MATNR = 1.
<VPPHDDMRPSTCK>-WERKS = 1.
<VPPHDDMRPSTCK>-BERID = 1.
<VPPHDDMRPSTCK>-POSTINGDATE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VPPHDDMRPSTCK-PLAAB, sy-vline,
  WA_VPPHDDMRPSTCK-PLANR, sy-vline,
  WA_VPPHDDMRPSTCK-SGT_SCAT, sy-vline,
  WA_VPPHDDMRPSTCK-SORT1, sy-vline,
  WA_VPPHDDMRPSTCK-SORT2, sy-vline,
  WA_VPPHDDMRPSTCK-DELKZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VPPHDDMRPSTCK 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_VPPHDDMRPSTCK 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_VPPHDDMRPSTCK INTO WA_VPPHDDMRPSTCK.


*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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_VPPHDDMRPSTCK-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VPPHDDMRPSTCK-MATNR.
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_VPPHDDMRPSTCK_STR, 
MANDT TYPE STRING,
MATNR TYPE STRING,
WERKS TYPE STRING,
BERID TYPE STRING,
POSTINGDATE TYPE STRING,
PLAAB TYPE STRING,
PLANR TYPE STRING,
SGT_SCAT TYPE STRING,
SORT1 TYPE STRING,
SORT2 TYPE STRING,
DELKZ TYPE STRING,
SOBKZ TYPE STRING,
LIFNR TYPE STRING,
KDAUF TYPE STRING,
KDPOS TYPE STRING,
PSPEL TYPE STRING,
VRFKZ TYPE STRING,
PLUMI TYPE STRING,
MNG01 TYPE STRING,
MNG01C TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VPPHDDMRPSTCK_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_VPPHDDMRPSTCK_STR-MANDT sy-vline 
WA_VPPHDDMRPSTCK_STR-MATNR sy-vline 
WA_VPPHDDMRPSTCK_STR-WERKS sy-vline 
WA_VPPHDDMRPSTCK_STR-BERID sy-vline 
WA_VPPHDDMRPSTCK_STR-POSTINGDATE sy-vline 
WA_VPPHDDMRPSTCK_STR-PLAAB sy-vline 
WA_VPPHDDMRPSTCK_STR-PLANR sy-vline 
WA_VPPHDDMRPSTCK_STR-SGT_SCAT sy-vline 
WA_VPPHDDMRPSTCK_STR-SORT1 sy-vline 
WA_VPPHDDMRPSTCK_STR-SORT2 sy-vline 
WA_VPPHDDMRPSTCK_STR-DELKZ sy-vline 
WA_VPPHDDMRPSTCK_STR-SOBKZ sy-vline 
WA_VPPHDDMRPSTCK_STR-LIFNR sy-vline 
WA_VPPHDDMRPSTCK_STR-KDAUF sy-vline 
WA_VPPHDDMRPSTCK_STR-KDPOS sy-vline 
WA_VPPHDDMRPSTCK_STR-PSPEL sy-vline 
WA_VPPHDDMRPSTCK_STR-VRFKZ sy-vline 
WA_VPPHDDMRPSTCK_STR-PLUMI sy-vline 
WA_VPPHDDMRPSTCK_STR-MNG01 sy-vline 
WA_VPPHDDMRPSTCK_STR-MNG01C sy-vline      INTO ld_text SEPARATED BY SPACE.

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