ABAP Select data from SAP table RPCYERKX into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RPCYERKX
*  INTO TABLE @DATA(IT_RPCYERKX2).
*--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_RPCYERKX INDEX 1 INTO DATA(WA_RPCYERKX2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RPCYERKX>-PERNR = 1.
<RPCYERKX>-PERSONID = 1.
<RPCYERKX>-FORML = 1.
<RPCYERKX>-INDX1 = 1.
<RPCYERKX>-BUSNM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RPCYERKX-WRKAR, sy-vline,
  WA_RPCYERKX-WTEXT, sy-vline,
  WA_RPCYERKX-KOSTL, sy-vline,
  WA_RPCYERKX-KTEXT, sy-vline,
  WA_RPCYERKX-NACHN, sy-vline,
  WA_RPCYERKX-VORNA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RPCYERKX 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_RPCYERKX 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_RPCYERKX INTO WA_RPCYERKX.


*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 PIDEX, internal->external for field PERSONID
CALL FUNCTION 'CONVERSION_EXIT_PIDEX_OUTPUT'
  EXPORTING
    input =                      WA_RPCYERKX-PERSONID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RPCYERKX-PERSONID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KOSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RPCYERKX-KOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RPCYERKX-KOSTL.
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_RPCYERKX_STR, 
PERNR TYPE STRING,
PERSONID TYPE STRING,
FORML TYPE STRING,
INDX1 TYPE STRING,
BUSNM TYPE STRING,
WRKAR TYPE STRING,
WTEXT TYPE STRING,
KOSTL TYPE STRING,
KTEXT TYPE STRING,
NACHN TYPE STRING,
VORNA TYPE STRING,
SLART TYPE STRING,
STEXT TYPE STRING,
LGART TYPE STRING,
LTEXT TYPE STRING,
BETRG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RPCYERKX_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_RPCYERKX_STR-PERNR sy-vline 
WA_RPCYERKX_STR-PERSONID sy-vline 
WA_RPCYERKX_STR-FORML sy-vline 
WA_RPCYERKX_STR-INDX1 sy-vline 
WA_RPCYERKX_STR-BUSNM sy-vline 
WA_RPCYERKX_STR-WRKAR sy-vline 
WA_RPCYERKX_STR-WTEXT sy-vline 
WA_RPCYERKX_STR-KOSTL sy-vline 
WA_RPCYERKX_STR-KTEXT sy-vline 
WA_RPCYERKX_STR-NACHN sy-vline 
WA_RPCYERKX_STR-VORNA sy-vline 
WA_RPCYERKX_STR-SLART sy-vline 
WA_RPCYERKX_STR-STEXT sy-vline 
WA_RPCYERKX_STR-LGART sy-vline 
WA_RPCYERKX_STR-LTEXT sy-vline 
WA_RPCYERKX_STR-BETRG sy-vline      INTO ld_text SEPARATED BY SPACE.

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