ABAP Select data from SAP table PC23P into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PC23P 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 PC23P. 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 PC23P 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_PC23P TYPE STANDARD TABLE OF PC23P,
      WA_PC23P TYPE PC23P,
      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: <PC23P> TYPE PC23P.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PC23P.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PC23P
  INTO TABLE IT_PC23P.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PC23P
*  INTO TABLE @DATA(IT_PC23P2).
*--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_PC23P INDEX 1 INTO DATA(WA_PC23P2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PC23P ASSIGNING <PC23P>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PC23P>-CNTR1 = 1.
<PC23P>-LGART = 1.
<PC23P>-PABRJ = 1.
<PC23P>-PABRP = 1.
<PC23P>-BETPE = 1.

ENDLOOP.

LOOP AT IT_PC23P INTO WA_PC23P.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PC23P-ANZHL, sy-vline,
  WA_PC23P-BETRG, sy-vline,
  WA_PC23P-ANSGA, sy-vline,
  WA_PC23P-AGSGA, sy-vline,
  WA_PC23P-EELIM, sy-vline,
  WA_PC23P-EYLIM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PC23P 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_PC23P 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_PC23P INTO WA_PC23P.


*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 GJAHR, internal->external for field PABRJ
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_PC23P-PABRJ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PC23P-PABRJ.
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_PC23P_STR, 
CNTR1 TYPE STRING,
LGART TYPE STRING,
PABRJ TYPE STRING,
PABRP TYPE STRING,
BETPE TYPE STRING,
ANZHL TYPE STRING,
BETRG TYPE STRING,
ANSGA TYPE STRING,
AGSGA TYPE STRING,
EELIM TYPE STRING,
EYLIM TYPE STRING,
AMOUT TYPE STRING,
WAGLV TYPE STRING,
WAGLV1 TYPE STRING,
WAGLV2 TYPE STRING,
WAGLV3 TYPE STRING,
WAGLV4 TYPE STRING,
WAGLV5 TYPE STRING,
WAGLV6 TYPE STRING,
EECON TYPE STRING,
ERCON TYPE STRING,
ERREF_NO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PC23P_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_PC23P_STR-CNTR1 sy-vline 
WA_PC23P_STR-LGART sy-vline 
WA_PC23P_STR-PABRJ sy-vline 
WA_PC23P_STR-PABRP sy-vline 
WA_PC23P_STR-BETPE sy-vline 
WA_PC23P_STR-ANZHL sy-vline 
WA_PC23P_STR-BETRG sy-vline 
WA_PC23P_STR-ANSGA sy-vline 
WA_PC23P_STR-AGSGA sy-vline 
WA_PC23P_STR-EELIM sy-vline 
WA_PC23P_STR-EYLIM sy-vline 
WA_PC23P_STR-AMOUT sy-vline 
WA_PC23P_STR-WAGLV sy-vline 
WA_PC23P_STR-WAGLV1 sy-vline 
WA_PC23P_STR-WAGLV2 sy-vline 
WA_PC23P_STR-WAGLV3 sy-vline 
WA_PC23P_STR-WAGLV4 sy-vline 
WA_PC23P_STR-WAGLV5 sy-vline 
WA_PC23P_STR-WAGLV6 sy-vline 
WA_PC23P_STR-EECON sy-vline 
WA_PC23P_STR-ERCON sy-vline 
WA_PC23P_STR-ERREF_NO sy-vline      INTO ld_text SEPARATED BY SPACE.

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