ABAP Select data from SAP table PC24Y into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PC24Y 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 PC24Y. 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 PC24Y 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_PC24Y TYPE STANDARD TABLE OF PC24Y,
      WA_PC24Y TYPE PC24Y,
      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: <PC24Y> TYPE PC24Y.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PC24Y.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PC24Y
  INTO TABLE IT_PC24Y.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PC24Y
*  INTO TABLE @DATA(IT_PC24Y2).
*--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_PC24Y INDEX 1 INTO DATA(WA_PC24Y2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PC24Y ASSIGNING <PC24Y>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PC24Y>-PFART = 1.
<PC24Y>-PFNUM = 1.
<PC24Y>-OBJPS = 1.
<PC24Y>-LGART = 1.
<PC24Y>-GKPER = 1.

ENDLOOP.

LOOP AT IT_PC24Y INTO WA_PC24Y.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PC24Y-GKABS, sy-vline,
  WA_PC24Y-ARTGW, sy-vline,
  WA_PC24Y-ARTBV, sy-vline,
  WA_PC24Y-BTRGW, sy-vline,
  WA_PC24Y-BTRBV, sy-vline,
  WA_PC24Y-PROGW, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PC24Y 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_PC24Y 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_PC24Y INTO WA_PC24Y.


*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_PC24Y_STR, 
PFART TYPE STRING,
PFNUM TYPE STRING,
OBJPS TYPE STRING,
LGART TYPE STRING,
GKPER TYPE STRING,
GKABS TYPE STRING,
ARTGW TYPE STRING,
ARTBV TYPE STRING,
BTRGW TYPE STRING,
BTRBV TYPE STRING,
PROGW TYPE STRING,
PROBV TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PC24Y_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_PC24Y_STR-PFART sy-vline 
WA_PC24Y_STR-PFNUM sy-vline 
WA_PC24Y_STR-OBJPS sy-vline 
WA_PC24Y_STR-LGART sy-vline 
WA_PC24Y_STR-GKPER sy-vline 
WA_PC24Y_STR-GKABS sy-vline 
WA_PC24Y_STR-ARTGW sy-vline 
WA_PC24Y_STR-ARTBV sy-vline 
WA_PC24Y_STR-BTRGW sy-vline 
WA_PC24Y_STR-BTRBV sy-vline 
WA_PC24Y_STR-PROGW sy-vline 
WA_PC24Y_STR-PROBV sy-vline      INTO ld_text SEPARATED BY SPACE.

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