ABAP Select data from SAP table PBKD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PBKD
*  INTO TABLE @DATA(IT_PBKD2).
*--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_PBKD INDEX 1 INTO DATA(WA_PBKD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PBKD>-BDZEI = 1.
<PBKD>-PDATU = 1.
<PBKD>-ZAEHL = 1.
<PBKD>-SORT2 = 1.
<PBKD>-RSNUM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PBKD-RSPOS, sy-vline,
  WA_PBKD-KDAUF, sy-vline,
  WA_PBKD-KDPOS, sy-vline,
  WA_PBKD-DAT00, sy-vline,
  WA_PBKD-VRMNG, sy-vline,
  WA_PBKD-VPMAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PBKD 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_PBKD 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_PBKD INTO WA_PBKD.


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

*Conversion exit MATN1, internal->external for field VPMAT
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_PBKD-VPMAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PBKD-VPMAT.
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_PBKD_STR, 
BDZEI TYPE STRING,
PDATU TYPE STRING,
ZAEHL TYPE STRING,
SORT2 TYPE STRING,
RSNUM TYPE STRING,
RSPOS TYPE STRING,
KDAUF TYPE STRING,
KDPOS TYPE STRING,
DAT00 TYPE STRING,
VRMNG TYPE STRING,
VPMAT TYPE STRING,
VPWRK TYPE STRING,
UMREF TYPE STRING,
KDURP TYPE STRING,
BDART TYPE STRING,
POSNR TYPE STRING,
DELKZ TYPE STRING,
KDEIN TYPE STRING,
SGT_RCAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PBKD_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_PBKD_STR-BDZEI sy-vline 
WA_PBKD_STR-PDATU sy-vline 
WA_PBKD_STR-ZAEHL sy-vline 
WA_PBKD_STR-SORT2 sy-vline 
WA_PBKD_STR-RSNUM sy-vline 
WA_PBKD_STR-RSPOS sy-vline 
WA_PBKD_STR-KDAUF sy-vline 
WA_PBKD_STR-KDPOS sy-vline 
WA_PBKD_STR-DAT00 sy-vline 
WA_PBKD_STR-VRMNG sy-vline 
WA_PBKD_STR-VPMAT sy-vline 
WA_PBKD_STR-VPWRK sy-vline 
WA_PBKD_STR-UMREF sy-vline 
WA_PBKD_STR-KDURP sy-vline 
WA_PBKD_STR-BDART sy-vline 
WA_PBKD_STR-POSNR sy-vline 
WA_PBKD_STR-DELKZ sy-vline 
WA_PBKD_STR-KDEIN sy-vline 
WA_PBKD_STR-SGT_RCAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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