ABAP Select data from SAP table PTK03_APPEND into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PTK03_APPEND 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 PTK03_APPEND. 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 PTK03_APPEND 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_PTK03_APPEND TYPE STANDARD TABLE OF PTK03_APPEND,
      WA_PTK03_APPEND TYPE PTK03_APPEND,
      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: <PTK03_APPEND> TYPE PTK03_APPEND.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PTK03_APPEND.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PTK03_APPEND
  INTO TABLE IT_PTK03_APPEND.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PTK03_APPEND
*  INTO TABLE @DATA(IT_PTK03_APPEND2).
*--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_PTK03_APPEND INDEX 1 INTO DATA(WA_PTK03_APPEND2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PTK03_APPEND ASSIGNING <PTK03_APPEND>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PTK03_APPEND>-REFNR = 1.
<PTK03_APPEND>-PAPER_RECEIPT = 1.
<PTK03_APPEND>-RECEIPT_VALIDATED = 1.
<PTK03_APPEND>-GENEHM_U_BELEG = 1.
<PTK03_APPEND>-PAPER_MISSING = 1.

ENDLOOP.

LOOP AT IT_PTK03_APPEND INTO WA_PTK03_APPEND.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PTK03_APPEND-RECEIPT_NO, sy-vline,
  WA_PTK03_APPEND-RECEIPT_ITEM, sy-vline,
  WA_PTK03_APPEND-FWSTE, sy-vline,
  WA_PTK03_APPEND-VAT_POSTING_TYPE, sy-vline,
  WA_PTK03_APPEND-VAT_SERVICE_CODE, sy-vline,
  WA_PTK03_APPEND-VAT_SERVICE_DESC, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PTK03_APPEND 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_PTK03_APPEND 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_PTK03_APPEND INTO WA_PTK03_APPEND.


*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 ISOLA, internal->external for field VAT_SRV_DESC_LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_PTK03_APPEND-VAT_SRV_DESC_LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PTK03_APPEND-VAT_SRV_DESC_LANGU.
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_PTK03_APPEND_STR, 
REFNR TYPE STRING,
PAPER_RECEIPT TYPE STRING,
RECEIPT_VALIDATED TYPE STRING,
GENEHM_U_BELEG TYPE STRING,
PAPER_MISSING TYPE STRING,
RECEIPT_NO TYPE STRING,
RECEIPT_ITEM TYPE STRING,
FWSTE TYPE STRING,
VAT_POSTING_TYPE TYPE STRING,
VAT_SERVICE_CODE TYPE STRING,
VAT_SERVICE_DESC TYPE STRING,
VAT_STATUS TYPE STRING,
VAT_CHANGED_MAN TYPE STRING,
DIFF_VIOLATION TYPE STRING,
VAT_SUB_SRV_CODE TYPE STRING,
VAT_SRV_DESC_LANGU TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PTK03_APPEND_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_PTK03_APPEND_STR-REFNR sy-vline 
WA_PTK03_APPEND_STR-PAPER_RECEIPT sy-vline 
WA_PTK03_APPEND_STR-RECEIPT_VALIDATED sy-vline 
WA_PTK03_APPEND_STR-GENEHM_U_BELEG sy-vline 
WA_PTK03_APPEND_STR-PAPER_MISSING sy-vline 
WA_PTK03_APPEND_STR-RECEIPT_NO sy-vline 
WA_PTK03_APPEND_STR-RECEIPT_ITEM sy-vline 
WA_PTK03_APPEND_STR-FWSTE sy-vline 
WA_PTK03_APPEND_STR-VAT_POSTING_TYPE sy-vline 
WA_PTK03_APPEND_STR-VAT_SERVICE_CODE sy-vline 
WA_PTK03_APPEND_STR-VAT_SERVICE_DESC sy-vline 
WA_PTK03_APPEND_STR-VAT_STATUS sy-vline 
WA_PTK03_APPEND_STR-VAT_CHANGED_MAN sy-vline 
WA_PTK03_APPEND_STR-DIFF_VIOLATION sy-vline 
WA_PTK03_APPEND_STR-VAT_SUB_SRV_CODE sy-vline 
WA_PTK03_APPEND_STR-VAT_SRV_DESC_LANGU sy-vline      INTO ld_text SEPARATED BY SPACE.

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