ABAP Select data from SAP table PTKXX_APPEND into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PTKXX_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 PTKXX_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 PTKXX_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_PTKXX_APPEND TYPE STANDARD TABLE OF PTKXX_APPEND,
      WA_PTKXX_APPEND TYPE PTKXX_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: <PTKXX_APPEND> TYPE PTKXX_APPEND.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PTKXX_APPEND
*  INTO TABLE @DATA(IT_PTKXX_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_PTKXX_APPEND INDEX 1 INTO DATA(WA_PTKXX_APPEND2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PTKXX_APPEND>-HCURR3 = 1.
<PTKXX_APPEND>-ANTRG00 = 1.
<PTKXX_APPEND>-ANTRGFI = 1.
<PTKXX_APPEND>-ANTRGHR = 1.
<PTKXX_APPEND>-ANTRGDT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PTKXX_APPEND-KZREA_DFW_A, sy-vline,
  WA_PTKXX_APPEND-KZREA_DFW_5, sy-vline,
  WA_PTKXX_APPEND-KZREA_DFW_4, sy-vline,
  WA_PTKXX_APPEND-KZREA_DFW_C, sy-vline,
  WA_PTKXX_APPEND-KZREA_DFW_D, sy-vline,
  WA_PTKXX_APPEND-KZREA_DFW_6, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PTKXX_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_PTKXX_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_PTKXX_APPEND INTO WA_PTKXX_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.
ENDFORM. 

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

TYPES: BEGIN OF T_PTKXX_APPEND_STR, 
HCURR3 TYPE STRING,
ANTRG00 TYPE STRING,
ANTRGFI TYPE STRING,
ANTRGHR TYPE STRING,
ANTRGDT TYPE STRING,
KZREA_DFW_A TYPE STRING,
KZREA_DFW_5 TYPE STRING,
KZREA_DFW_4 TYPE STRING,
KZREA_DFW_C TYPE STRING,
KZREA_DFW_D TYPE STRING,
KZREA_DFW_6 TYPE STRING,
KZREA_DFW_7 TYPE STRING,
KZREA_DFW_8 TYPE STRING,
KZREA_DFW_G TYPE STRING,
VERPA_TEXT TYPE STRING,
M_RECEIPTS_VALID TYPE STRING,
M_RECEIPTS_NOT_VALID TYPE STRING,
U_RECEIPTS_VALID TYPE STRING,
U_RECEIPTS_NOT_VALID TYPE STRING,
V_RECEIPTS_VALID TYPE STRING,
V_RECEIPTS_NOT_VALID TYPE STRING,
S_RECEIPTS_VALID TYPE STRING,
S_RECEIPTS_NOT_VALID TYPE STRING,
DATUM_RED_PAUSCH TYPE STRING,
PERNR_FOR_SH TYPE STRING,
VAT_RFD TYPE STRING,
ANKUNFT TYPE STRING,
ABFAHRT TYPE STRING,
KZREA_DFW_V TYPE STRING,
KZREA_DFW_W TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PTKXX_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_PTKXX_APPEND_STR-HCURR3 sy-vline 
WA_PTKXX_APPEND_STR-ANTRG00 sy-vline 
WA_PTKXX_APPEND_STR-ANTRGFI sy-vline 
WA_PTKXX_APPEND_STR-ANTRGHR sy-vline 
WA_PTKXX_APPEND_STR-ANTRGDT sy-vline 
WA_PTKXX_APPEND_STR-KZREA_DFW_A sy-vline 
WA_PTKXX_APPEND_STR-KZREA_DFW_5 sy-vline 
WA_PTKXX_APPEND_STR-KZREA_DFW_4 sy-vline 
WA_PTKXX_APPEND_STR-KZREA_DFW_C sy-vline 
WA_PTKXX_APPEND_STR-KZREA_DFW_D sy-vline 
WA_PTKXX_APPEND_STR-KZREA_DFW_6 sy-vline 
WA_PTKXX_APPEND_STR-KZREA_DFW_7 sy-vline 
WA_PTKXX_APPEND_STR-KZREA_DFW_8 sy-vline 
WA_PTKXX_APPEND_STR-KZREA_DFW_G sy-vline 
WA_PTKXX_APPEND_STR-VERPA_TEXT sy-vline 
WA_PTKXX_APPEND_STR-M_RECEIPTS_VALID sy-vline 
WA_PTKXX_APPEND_STR-M_RECEIPTS_NOT_VALID sy-vline 
WA_PTKXX_APPEND_STR-U_RECEIPTS_VALID sy-vline 
WA_PTKXX_APPEND_STR-U_RECEIPTS_NOT_VALID sy-vline 
WA_PTKXX_APPEND_STR-V_RECEIPTS_VALID sy-vline 
WA_PTKXX_APPEND_STR-V_RECEIPTS_NOT_VALID sy-vline 
WA_PTKXX_APPEND_STR-S_RECEIPTS_VALID sy-vline 
WA_PTKXX_APPEND_STR-S_RECEIPTS_NOT_VALID sy-vline 
WA_PTKXX_APPEND_STR-DATUM_RED_PAUSCH sy-vline 
WA_PTKXX_APPEND_STR-PERNR_FOR_SH sy-vline 
WA_PTKXX_APPEND_STR-VAT_RFD sy-vline 
WA_PTKXX_APPEND_STR-ANKUNFT sy-vline 
WA_PTKXX_APPEND_STR-ABFAHRT sy-vline 
WA_PTKXX_APPEND_STR-KZREA_DFW_V sy-vline 
WA_PTKXX_APPEND_STR-KZREA_DFW_W sy-vline      INTO ld_text SEPARATED BY SPACE.

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