ABAP Select data from SAP table TPK03 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP TPK03 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 TPK03. 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 TPK03 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_TPK03 TYPE STANDARD TABLE OF TPK03,
      WA_TPK03 TYPE TPK03,
      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: <TPK03> TYPE TPK03.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_TPK03.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM TPK03
  INTO TABLE IT_TPK03.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TPK03
*  INTO TABLE @DATA(IT_TPK032).
*--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_TPK03 INDEX 1 INTO DATA(WA_TPK032).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_TPK03 ASSIGNING <TPK03>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TPK03>-MANDT = 1.
<TPK03>-WERKS = 1.
<TPK03>-PKSTU = 1.
<TPK03>-PKSAU = 1.
<TPK03>-BWART = 1.

ENDLOOP.

LOOP AT IT_TPK03 INTO WA_TPK03.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TPK03-AUSSP, sy-vline,
  WA_TPK03-PKFRM, sy-vline,
  WA_TPK03-BWARK, sy-vline,
  WA_TPK03-RULES, sy-vline,
  WA_TPK03-KALSM, sy-vline,
  WA_TPK03-PKWZW, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TPK03 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_TPK03 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_TPK03 INTO WA_TPK03.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_TPK03_STR, 
MANDT TYPE STRING,
WERKS TYPE STRING,
PKSTU TYPE STRING,
PKSAU TYPE STRING,
BWART TYPE STRING,
AUSSP TYPE STRING,
PKFRM TYPE STRING,
BWARK TYPE STRING,
RULES TYPE STRING,
KALSM TYPE STRING,
PKWZW TYPE STRING,
CNSCC TYPE STRING,
BWACC TYPE STRING,
PKDIRTA TYPE STRING,
PKKZDIF TYPE STRING,
DRUFB TYPE STRING,
SDDKZ TYPE STRING,
UTTRM TYPE STRING,
RKFORM TYPE STRING,
RKDRUFB TYPE STRING,
VPACK TYPE STRING,
ALERT TYPE STRING,
KANB_FORM_PDF TYPE STRING,
FORM_TYPE TYPE STRING,
CC_FORM_PDF TYPE STRING,
CC_FORM_TYPE TYPE STRING,
CC_PRINT_FORM TYPE STRING,
KBFORM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TPK03_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_TPK03_STR-MANDT sy-vline 
WA_TPK03_STR-WERKS sy-vline 
WA_TPK03_STR-PKSTU sy-vline 
WA_TPK03_STR-PKSAU sy-vline 
WA_TPK03_STR-BWART sy-vline 
WA_TPK03_STR-AUSSP sy-vline 
WA_TPK03_STR-PKFRM sy-vline 
WA_TPK03_STR-BWARK sy-vline 
WA_TPK03_STR-RULES sy-vline 
WA_TPK03_STR-KALSM sy-vline 
WA_TPK03_STR-PKWZW sy-vline 
WA_TPK03_STR-CNSCC sy-vline 
WA_TPK03_STR-BWACC sy-vline 
WA_TPK03_STR-PKDIRTA sy-vline 
WA_TPK03_STR-PKKZDIF sy-vline 
WA_TPK03_STR-DRUFB sy-vline 
WA_TPK03_STR-SDDKZ sy-vline 
WA_TPK03_STR-UTTRM sy-vline 
WA_TPK03_STR-RKFORM sy-vline 
WA_TPK03_STR-RKDRUFB sy-vline 
WA_TPK03_STR-VPACK sy-vline 
WA_TPK03_STR-ALERT sy-vline 
WA_TPK03_STR-KANB_FORM_PDF sy-vline 
WA_TPK03_STR-FORM_TYPE sy-vline 
WA_TPK03_STR-CC_FORM_PDF sy-vline 
WA_TPK03_STR-CC_FORM_TYPE sy-vline 
WA_TPK03_STR-CC_PRINT_FORM sy-vline 
WA_TPK03_STR-KBFORM sy-vline      INTO ld_text SEPARATED BY SPACE.

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