ABAP Select data from SAP table RPCXXXWX into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RPCXXXWX 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 RPCXXXWX. 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 RPCXXXWX 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_RPCXXXWX TYPE STANDARD TABLE OF RPCXXXWX,
      WA_RPCXXXWX TYPE RPCXXXWX,
      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: <RPCXXXWX> TYPE RPCXXXWX.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RPCXXXWX
*  INTO TABLE @DATA(IT_RPCXXXWX2).
*--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_RPCXXXWX INDEX 1 INTO DATA(WA_RPCXXXWX2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RPCXXXWX>-COLOR_OPT = 1.
<RPCXXXWX>-COLUMN_OPT = 1.
<RPCXXXWX>-TEST = 1.
<RPCXXXWX>-FILSIZ = 1.
<RPCXXXWX>-TAXYEAR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RPCXXXWX-CREATORS, sy-vline,
  WA_RPCXXXWX-ADRER, sy-vline,
  WA_RPCXXXWX-ADDTY, sy-vline,
  WA_RPCXXXWX-PRT_FRM, sy-vline,
  WA_RPCXXXWX-EECNT, sy-vline,
  WA_RPCXXXWX-EEPER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RPCXXXWX 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_RPCXXXWX 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_RPCXXXWX INTO WA_RPCXXXWX.


*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 TAXYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_RPCXXXWX-TAXYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RPCXXXWX-TAXYEAR.
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_RPCXXXWX_STR, 
COLOR_OPT TYPE STRING,
COLUMN_OPT TYPE STRING,
TEST TYPE STRING,
FILSIZ TYPE STRING,
TAXYEAR TYPE STRING,
CREATORS TYPE STRING,
ADRER TYPE STRING,
ADDTY TYPE STRING,
PRT_FRM TYPE STRING,
EECNT TYPE STRING,
EEPER TYPE STRING,
GESCH_T TYPE STRING,
GRADE TYPE STRING,
DESIG TYPE STRING,
EELOW TYPE STRING,
EEHGH TYPE STRING,
RATIO TYPE STRING,
RAGAP TYPE STRING,
TARAT TYPE STRING,
GAPAL TYPE STRING,
EEAVE TYPE STRING,
EEDEC TYPE STRING,
NUMPA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RPCXXXWX_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_RPCXXXWX_STR-COLOR_OPT sy-vline 
WA_RPCXXXWX_STR-COLUMN_OPT sy-vline 
WA_RPCXXXWX_STR-TEST sy-vline 
WA_RPCXXXWX_STR-FILSIZ sy-vline 
WA_RPCXXXWX_STR-TAXYEAR sy-vline 
WA_RPCXXXWX_STR-CREATORS sy-vline 
WA_RPCXXXWX_STR-ADRER sy-vline 
WA_RPCXXXWX_STR-ADDTY sy-vline 
WA_RPCXXXWX_STR-PRT_FRM sy-vline 
WA_RPCXXXWX_STR-EECNT sy-vline 
WA_RPCXXXWX_STR-EEPER sy-vline 
WA_RPCXXXWX_STR-GESCH_T sy-vline 
WA_RPCXXXWX_STR-GRADE sy-vline 
WA_RPCXXXWX_STR-DESIG sy-vline 
WA_RPCXXXWX_STR-EELOW sy-vline 
WA_RPCXXXWX_STR-EEHGH sy-vline 
WA_RPCXXXWX_STR-RATIO sy-vline 
WA_RPCXXXWX_STR-RAGAP sy-vline 
WA_RPCXXXWX_STR-TARAT sy-vline 
WA_RPCXXXWX_STR-GAPAL sy-vline 
WA_RPCXXXWX_STR-EEAVE sy-vline 
WA_RPCXXXWX_STR-EEDEC sy-vline 
WA_RPCXXXWX_STR-NUMPA sy-vline      INTO ld_text SEPARATED BY SPACE.

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