ABAP Select data from SAP table KDPB into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KDPB
*  INTO TABLE @DATA(IT_KDPB2).
*--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_KDPB INDEX 1 INTO DATA(WA_KDPB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KDPB>-PLAKZ = 1.
<KDPB>-SORT2 = 1.
<KDPB>-PLANR = 1.
<KDPB>-DAT00 = 1.
<KDPB>-VRMNG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KDPB-PDATU, sy-vline,
  WA_KDPB-BEDAE, sy-vline,
  WA_KDPB-VERSB, sy-vline,
  WA_KDPB-PBDNR, sy-vline,
  WA_KDPB-VPMAT, sy-vline,
  WA_KDPB-VPWRK, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KDPB 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_KDPB 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_KDPB INTO WA_KDPB.


*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 VPMAT
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_KDPB-VPMAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KDPB-VPMAT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_KDPB-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KDPB-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_KDPB_STR, 
PLAKZ TYPE STRING,
SORT2 TYPE STRING,
PLANR TYPE STRING,
DAT00 TYPE STRING,
VRMNG TYPE STRING,
PDATU TYPE STRING,
BEDAE TYPE STRING,
VERSB TYPE STRING,
PBDNR TYPE STRING,
VPMAT TYPE STRING,
VPWRK TYPE STRING,
UMREF TYPE STRING,
MATNR TYPE STRING,
WERKS TYPE STRING,
PLNMG TYPE STRING,
KDURP TYPE STRING,
DELKZ TYPE STRING,
EXTRA TYPE STRING,
PBDNR_EXT TYPE STRING,
SGT_ORRC TYPE STRING,
SGT_PLRC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KDPB_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_KDPB_STR-PLAKZ sy-vline 
WA_KDPB_STR-SORT2 sy-vline 
WA_KDPB_STR-PLANR sy-vline 
WA_KDPB_STR-DAT00 sy-vline 
WA_KDPB_STR-VRMNG sy-vline 
WA_KDPB_STR-PDATU sy-vline 
WA_KDPB_STR-BEDAE sy-vline 
WA_KDPB_STR-VERSB sy-vline 
WA_KDPB_STR-PBDNR sy-vline 
WA_KDPB_STR-VPMAT sy-vline 
WA_KDPB_STR-VPWRK sy-vline 
WA_KDPB_STR-UMREF sy-vline 
WA_KDPB_STR-MATNR sy-vline 
WA_KDPB_STR-WERKS sy-vline 
WA_KDPB_STR-PLNMG sy-vline 
WA_KDPB_STR-KDURP sy-vline 
WA_KDPB_STR-DELKZ sy-vline 
WA_KDPB_STR-EXTRA sy-vline 
WA_KDPB_STR-PBDNR_EXT sy-vline 
WA_KDPB_STR-SGT_ORRC sy-vline 
WA_KDPB_STR-SGT_PLRC sy-vline      INTO ld_text SEPARATED BY SPACE.

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