ABAP Select data from SAP table VPKDLI into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VPKDLI
*  INTO TABLE @DATA(IT_VPKDLI2).
*--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_VPKDLI INDEX 1 INTO DATA(WA_VPKDLI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VPKDLI>-MANDT = 1.
<VPKDLI>-VPKID = 1.
<VPKDLI>-DLINR = 1.
<VPKDLI>-LOCKED = 1.
<VPKDLI>-BEMOT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VPKDLI-AUMOT, sy-vline,
  WA_VPKDLI-VWAER, sy-vline,
  WA_VPKDLI-POSNR, sy-vline,
  WA_VPKDLI-POSNRVPK, sy-vline,
  WA_VPKDLI-UEPOSVPK, sy-vline,
  WA_VPKDLI-MATNR_SD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VPKDLI 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_VPKDLI 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_VPKDLI INTO WA_VPKDLI.


*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_SD
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_VPKDLI-MATNR_SD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VPKDLI-MATNR_SD.
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_VPKDLI_STR, 
MANDT TYPE STRING,
VPKID TYPE STRING,
DLINR TYPE STRING,
LOCKED TYPE STRING,
BEMOT TYPE STRING,
AUMOT TYPE STRING,
VWAER TYPE STRING,
POSNR TYPE STRING,
POSNRVPK TYPE STRING,
UEPOSVPK TYPE STRING,
MATNR_SD TYPE STRING,
SO_WTGBTR TYPE STRING,
SO_WOGBTR TYPE STRING,
SO_WKGBTR TYPE STRING,
SO_MEGBTR TYPE STRING,
BI_WTGBTR TYPE STRING,
BI_WOGBTR TYPE STRING,
BI_WKGBTR TYPE STRING,
BI_MEGBTR TYPE STRING,
OP_WTGBTR TYPE STRING,
OP_WOGBTR TYPE STRING,
OP_WKGBTR TYPE STRING,
OP_MEGBTR TYPE STRING,
CA_WTGBTR TYPE STRING,
CA_WOGBTR TYPE STRING,
CA_WKGBTR TYPE STRING,
CA_MEGBTR TYPE STRING,
IN_WTGBTR TYPE STRING,
IN_WOGBTR TYPE STRING,
IN_WKGBTR TYPE STRING,
IN_MEGBTR TYPE STRING,
LA_WTGBTR TYPE STRING,
LA_WOGBTR TYPE STRING,
LA_WKGBTR TYPE STRING,
LA_MEGBTR TYPE STRING,
NO_WTGBTR TYPE STRING,
NO_WOGBTR TYPE STRING,
NO_WKGBTR TYPE STRING,
NO_MEGBTR TYPE STRING,
BA_WTGBTR TYPE STRING,
BA_WOGBTR TYPE STRING,
BA_WKGBTR TYPE STRING,
BA_MEGBTR TYPE STRING,
NETVALUE TYPE STRING,
NETPR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VPKDLI_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_VPKDLI_STR-MANDT sy-vline 
WA_VPKDLI_STR-VPKID sy-vline 
WA_VPKDLI_STR-DLINR sy-vline 
WA_VPKDLI_STR-LOCKED sy-vline 
WA_VPKDLI_STR-BEMOT sy-vline 
WA_VPKDLI_STR-AUMOT sy-vline 
WA_VPKDLI_STR-VWAER sy-vline 
WA_VPKDLI_STR-POSNR sy-vline 
WA_VPKDLI_STR-POSNRVPK sy-vline 
WA_VPKDLI_STR-UEPOSVPK sy-vline 
WA_VPKDLI_STR-MATNR_SD sy-vline 
WA_VPKDLI_STR-SO_WTGBTR sy-vline 
WA_VPKDLI_STR-SO_WOGBTR sy-vline 
WA_VPKDLI_STR-SO_WKGBTR sy-vline 
WA_VPKDLI_STR-SO_MEGBTR sy-vline 
WA_VPKDLI_STR-BI_WTGBTR sy-vline 
WA_VPKDLI_STR-BI_WOGBTR sy-vline 
WA_VPKDLI_STR-BI_WKGBTR sy-vline 
WA_VPKDLI_STR-BI_MEGBTR sy-vline 
WA_VPKDLI_STR-OP_WTGBTR sy-vline 
WA_VPKDLI_STR-OP_WOGBTR sy-vline 
WA_VPKDLI_STR-OP_WKGBTR sy-vline 
WA_VPKDLI_STR-OP_MEGBTR sy-vline 
WA_VPKDLI_STR-CA_WTGBTR sy-vline 
WA_VPKDLI_STR-CA_WOGBTR sy-vline 
WA_VPKDLI_STR-CA_WKGBTR sy-vline 
WA_VPKDLI_STR-CA_MEGBTR sy-vline 
WA_VPKDLI_STR-IN_WTGBTR sy-vline 
WA_VPKDLI_STR-IN_WOGBTR sy-vline 
WA_VPKDLI_STR-IN_WKGBTR sy-vline 
WA_VPKDLI_STR-IN_MEGBTR sy-vline 
WA_VPKDLI_STR-LA_WTGBTR sy-vline 
WA_VPKDLI_STR-LA_WOGBTR sy-vline 
WA_VPKDLI_STR-LA_WKGBTR sy-vline 
WA_VPKDLI_STR-LA_MEGBTR sy-vline 
WA_VPKDLI_STR-NO_WTGBTR sy-vline 
WA_VPKDLI_STR-NO_WOGBTR sy-vline 
WA_VPKDLI_STR-NO_WKGBTR sy-vline 
WA_VPKDLI_STR-NO_MEGBTR sy-vline 
WA_VPKDLI_STR-BA_WTGBTR sy-vline 
WA_VPKDLI_STR-BA_WOGBTR sy-vline 
WA_VPKDLI_STR-BA_WKGBTR sy-vline 
WA_VPKDLI_STR-BA_MEGBTR sy-vline 
WA_VPKDLI_STR-NETVALUE sy-vline 
WA_VPKDLI_STR-NETPR sy-vline      INTO ld_text SEPARATED BY SPACE.

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