ABAP Select data from SAP table TPK01 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP TPK01 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 TPK01. 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 TPK01 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_TPK01 TYPE STANDARD TABLE OF TPK01,
      WA_TPK01 TYPE TPK01,
      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: <TPK01> TYPE TPK01.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_TPK01.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM TPK01
  INTO TABLE IT_TPK01.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TPK01
*  INTO TABLE @DATA(IT_TPK012).
*--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_TPK01 INDEX 1 INTO DATA(WA_TPK012).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_TPK01 ASSIGNING <TPK01>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TPK01>-MANDT = 1.
<TPK01>-WERKS = 1.
<TPK01>-PKSTE = 1.
<TPK01>-PKSAE = 1.
<TPK01>-AUART = 1.

ENDLOOP.

LOOP AT IT_TPK01 INTO WA_TPK01.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TPK01-AUSSP, sy-vline,
  WA_TPK01-KZQUO, sy-vline,
  WA_TPK01-BWAWE, sy-vline,
  WA_TPK01-PKFRM, sy-vline,
  WA_TPK01-PKWZW, sy-vline,
  WA_TPK01-CNSCC, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TPK01 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_TPK01 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_TPK01 INTO WA_TPK01.


*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_TPK01_STR, 
MANDT TYPE STRING,
WERKS TYPE STRING,
PKSTE TYPE STRING,
PKSAE TYPE STRING,
AUART TYPE STRING,
AUSSP TYPE STRING,
KZQUO TYPE STRING,
BWAWE TYPE STRING,
PKFRM TYPE STRING,
PKWZW TYPE STRING,
CNSCC TYPE STRING,
BWACC TYPE STRING,
DRUFB TYPE STRING,
SDDKZ TYPE STRING,
REDST TYPE STRING,
REDHZ TYPE STRING,
PLGEN TYPE STRING,
VPACK TYPE STRING,
RKFORM TYPE STRING,
RKDRUFB 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,
REUSEST TYPE STRING,
REUSEHZ TYPE STRING,
ACT_CAPA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TPK01_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_TPK01_STR-MANDT sy-vline 
WA_TPK01_STR-WERKS sy-vline 
WA_TPK01_STR-PKSTE sy-vline 
WA_TPK01_STR-PKSAE sy-vline 
WA_TPK01_STR-AUART sy-vline 
WA_TPK01_STR-AUSSP sy-vline 
WA_TPK01_STR-KZQUO sy-vline 
WA_TPK01_STR-BWAWE sy-vline 
WA_TPK01_STR-PKFRM sy-vline 
WA_TPK01_STR-PKWZW sy-vline 
WA_TPK01_STR-CNSCC sy-vline 
WA_TPK01_STR-BWACC sy-vline 
WA_TPK01_STR-DRUFB sy-vline 
WA_TPK01_STR-SDDKZ sy-vline 
WA_TPK01_STR-REDST sy-vline 
WA_TPK01_STR-REDHZ sy-vline 
WA_TPK01_STR-PLGEN sy-vline 
WA_TPK01_STR-VPACK sy-vline 
WA_TPK01_STR-RKFORM sy-vline 
WA_TPK01_STR-RKDRUFB sy-vline 
WA_TPK01_STR-ALERT sy-vline 
WA_TPK01_STR-KANB_FORM_PDF sy-vline 
WA_TPK01_STR-FORM_TYPE sy-vline 
WA_TPK01_STR-CC_FORM_PDF sy-vline 
WA_TPK01_STR-CC_FORM_TYPE sy-vline 
WA_TPK01_STR-CC_PRINT_FORM sy-vline 
WA_TPK01_STR-KBFORM sy-vline 
WA_TPK01_STR-REUSEST sy-vline 
WA_TPK01_STR-REUSEHZ sy-vline 
WA_TPK01_STR-ACT_CAPA sy-vline      INTO ld_text SEPARATED BY SPACE.

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