ABAP Select data from SAP table RPDOC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RPDOC
*  INTO TABLE @DATA(IT_RPDOC2).
*--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_RPDOC INDEX 1 INTO DATA(WA_RPDOC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RPDOC>-MANDT = 1.
<RPDOC>-MATNR = 1.
<RPDOC>-RESWK = 1.
<RPDOC>-EBELN = 1.
<RPDOC>-EBELP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RPDOC-BSART, sy-vline,
  WA_RPDOC-MEMORY, sy-vline,
  WA_RPDOC-BSTYP, sy-vline,
  WA_RPDOC-LOEKZ, sy-vline,
  WA_RPDOC-ELIKZ, sy-vline,
  WA_RPDOC-MEINS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RPDOC 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_RPDOC 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_RPDOC INTO WA_RPDOC.


*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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_RPDOC-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RPDOC-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RPDOC-EBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RPDOC-EBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RPDOC-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RPDOC-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BANFN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RPDOC-BANFN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RPDOC-BANFN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AKTNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RPDOC-AKTNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RPDOC-AKTNR.
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_RPDOC_STR, 
MANDT TYPE STRING,
MATNR TYPE STRING,
RESWK TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
BSART TYPE STRING,
MEMORY TYPE STRING,
BSTYP TYPE STRING,
LOEKZ TYPE STRING,
ELIKZ TYPE STRING,
MEINS TYPE STRING,
UMREZ TYPE STRING,
UMREN TYPE STRING,
PLIFZ TYPE STRING,
WERKS TYPE STRING,
KNTTP TYPE STRING,
SOBKZ TYPE STRING,
KZVBR TYPE STRING,
CUOBJ TYPE STRING,
UMSOK TYPE STRING,
RETPO TYPE STRING,
ETENR TYPE STRING,
EINDT TYPE STRING,
LPEIN TYPE STRING,
MENGE TYPE STRING,
WAMNG TYPE STRING,
WEMNG TYPE STRING,
SERNR TYPE STRING,
MNG02 TYPE STRING,
DAT01 TYPE STRING,
GLMNG TYPE STRING,
BANFN TYPE STRING,
BNFPO TYPE STRING,
AKTNR TYPE STRING,
EGLKZ TYPE STRING,
KZBWS TYPE STRING,
TECHS TYPE STRING,
ETFZ1 TYPE STRING,
ETFZ2 TYPE STRING,
LFRET TYPE STRING,
DABMG TYPE STRING,
ESTKZ TYPE STRING,
FIXKZ TYPE STRING,
BEDAT TYPE STRING,
MBDAT TYPE STRING,
UZEIT TYPE STRING,
AULWE TYPE STRING,
LPRIO TYPE STRING,
RESLO TYPE STRING,
FIXMG TYPE STRING,
SGT_SCAT TYPE STRING,
SGT_RCAT TYPE STRING,
WEBAZ TYPE STRING,
FSH_RALLOC_QTY TYPE STRING,
PRREG TYPE STRING,
REVFE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RPDOC_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_RPDOC_STR-MANDT sy-vline 
WA_RPDOC_STR-MATNR sy-vline 
WA_RPDOC_STR-RESWK sy-vline 
WA_RPDOC_STR-EBELN sy-vline 
WA_RPDOC_STR-EBELP sy-vline 
WA_RPDOC_STR-BSART sy-vline 
WA_RPDOC_STR-MEMORY sy-vline 
WA_RPDOC_STR-BSTYP sy-vline 
WA_RPDOC_STR-LOEKZ sy-vline 
WA_RPDOC_STR-ELIKZ sy-vline 
WA_RPDOC_STR-MEINS sy-vline 
WA_RPDOC_STR-UMREZ sy-vline 
WA_RPDOC_STR-UMREN sy-vline 
WA_RPDOC_STR-PLIFZ sy-vline 
WA_RPDOC_STR-WERKS sy-vline 
WA_RPDOC_STR-KNTTP sy-vline 
WA_RPDOC_STR-SOBKZ sy-vline 
WA_RPDOC_STR-KZVBR sy-vline 
WA_RPDOC_STR-CUOBJ sy-vline 
WA_RPDOC_STR-UMSOK sy-vline 
WA_RPDOC_STR-RETPO sy-vline 
WA_RPDOC_STR-ETENR sy-vline 
WA_RPDOC_STR-EINDT sy-vline 
WA_RPDOC_STR-LPEIN sy-vline 
WA_RPDOC_STR-MENGE sy-vline 
WA_RPDOC_STR-WAMNG sy-vline 
WA_RPDOC_STR-WEMNG sy-vline 
WA_RPDOC_STR-SERNR sy-vline 
WA_RPDOC_STR-MNG02 sy-vline 
WA_RPDOC_STR-DAT01 sy-vline 
WA_RPDOC_STR-GLMNG sy-vline 
WA_RPDOC_STR-BANFN sy-vline 
WA_RPDOC_STR-BNFPO sy-vline 
WA_RPDOC_STR-AKTNR sy-vline 
WA_RPDOC_STR-EGLKZ sy-vline 
WA_RPDOC_STR-KZBWS sy-vline 
WA_RPDOC_STR-TECHS sy-vline 
WA_RPDOC_STR-ETFZ1 sy-vline 
WA_RPDOC_STR-ETFZ2 sy-vline 
WA_RPDOC_STR-LFRET sy-vline 
WA_RPDOC_STR-DABMG sy-vline 
WA_RPDOC_STR-ESTKZ sy-vline 
WA_RPDOC_STR-FIXKZ sy-vline 
WA_RPDOC_STR-BEDAT sy-vline 
WA_RPDOC_STR-MBDAT sy-vline 
WA_RPDOC_STR-UZEIT sy-vline 
WA_RPDOC_STR-AULWE sy-vline 
WA_RPDOC_STR-LPRIO sy-vline 
WA_RPDOC_STR-RESLO sy-vline 
WA_RPDOC_STR-FIXMG sy-vline 
WA_RPDOC_STR-SGT_SCAT sy-vline 
WA_RPDOC_STR-SGT_RCAT sy-vline 
WA_RPDOC_STR-WEBAZ sy-vline 
WA_RPDOC_STR-FSH_RALLOC_QTY sy-vline 
WA_RPDOC_STR-PRREG sy-vline 
WA_RPDOC_STR-REVFE sy-vline      INTO ld_text SEPARATED BY SPACE.

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