ABAP Select data from SAP table RDEFAULT_DATA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RDEFAULT_DATA
*  INTO TABLE @DATA(IT_RDEFAULT_DATA2).
*--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_RDEFAULT_DATA INDEX 1 INTO DATA(WA_RDEFAULT_DATA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RDEFAULT_DATA>-MHNK = 1.
<RDEFAULT_DATA>-MHND = 1.
<RDEFAULT_DATA>-KNB1 = 1.
<RDEFAULT_DATA>-VDDUNN = 1.
<RDEFAULT_DATA>-VDDEF_COUNTER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RDEFAULT_DATA-BSID, sy-vline,
  WA_RDEFAULT_DATA-VZZBEPP, sy-vline,
  WA_RDEFAULT_DATA-RDVALUES, sy-vline,
  WA_RDEFAULT_DATA-CURRENCY, sy-vline,
  WA_RDEFAULT_DATA-CYEAR, sy-vline,
  WA_RDEFAULT_DATA-TRAMYEAR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RDEFAULT_DATA 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_RDEFAULT_DATA 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_RDEFAULT_DATA INTO WA_RDEFAULT_DATA.


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

*Conversion exit ALPHA, internal->external for field KNRMA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RDEFAULT_DATA-KNRMA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RDEFAULT_DATA-KNRMA.
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_RDEFAULT_DATA_STR, 
MHNK TYPE STRING,
MHND TYPE STRING,
KNB1 TYPE STRING,
VDDUNN TYPE STRING,
VDDEF_COUNTER TYPE STRING,
BSID TYPE STRING,
VZZBEPP TYPE STRING,
RDVALUES TYPE STRING,
CURRENCY TYPE STRING,
CYEAR TYPE STRING,
TRAMYEAR TYPE STRING,
TRAMPY TYPE STRING,
TRAMLIFE TYPE STRING,
TRASSMYEAR TYPE STRING,
TRASSMPY TYPE STRING,
TRASSMLIFE TYPE STRING,
FPAYMA TYPE STRING,
PPAYMA TYPE STRING,
PASTDUEA TYPE STRING,
PRINCA TYPE STRING,
INTERESTA TYPE STRING,
FEEA TYPE STRING,
DAYS_PDUE TYPE STRING,
NSCHPMA TYPE STRING,
NOAINTBAL TYPE STRING,
NOAINT TYPE STRING,
CNT_RATE TYPE STRING,
DUNN_CONTROL TYPE STRING,
MANDT TYPE STRING,
MAHNA TYPE STRING,
RHYTH TYPE STRING,
MIVRZ TYPE STRING,
KULEP TYPE STRING,
UMSKD TYPE STRING,
UMSKK TYPE STRING,
XNUMS TYPE STRING,
VZSKZ TYPE STRING,
MAHNR TYPE STRING,
MAHNS TYPE STRING,
KALID TYPE STRING,
XMGER TYPE STRING,
XSALSH TYPE STRING,
XIGNVZ TYPE STRING,
RDDEFDATES TYPE STRING,
DLASTFP TYPE STRING,
NEXT_PDUED TYPE STRING,
NEXT_SCHP TYPE STRING,
DLASTP TYPE STRING,
DLASTBILL TYPE STRING,
DFIRSTDISB TYPE STRING,
CALCDATE TYPE STRING,
NONACCRUAL TYPE STRING,
FLG_NON_ACCR TYPE STRING,
D_NON_ACCRUAL TYPE STRING,
D_ACCRUAL TYPE STRING,
RDDEFAULT_STATUS TYPE STRING,
STATUS TYPE STRING,
TEXT TYPE STRING,
KNB5 TYPE STRING,
MANDT TYPE STRING,
KUNNR TYPE STRING,
BUKRS TYPE STRING,
MABER TYPE STRING,
MAHNA TYPE STRING,
MANSP TYPE STRING,
MADAT TYPE STRING,
MAHNS TYPE STRING,
KNRMA TYPE STRING,
GMVDT TYPE STRING,
BUSAB TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RDEFAULT_DATA_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_RDEFAULT_DATA_STR-MHNK sy-vline 
WA_RDEFAULT_DATA_STR-MHND sy-vline 
WA_RDEFAULT_DATA_STR-KNB1 sy-vline 
WA_RDEFAULT_DATA_STR-VDDUNN sy-vline 
WA_RDEFAULT_DATA_STR-VDDEF_COUNTER sy-vline 
WA_RDEFAULT_DATA_STR-BSID sy-vline 
WA_RDEFAULT_DATA_STR-VZZBEPP sy-vline 
WA_RDEFAULT_DATA_STR-RDVALUES sy-vline 
WA_RDEFAULT_DATA_STR-CURRENCY sy-vline 
WA_RDEFAULT_DATA_STR-CYEAR sy-vline 
WA_RDEFAULT_DATA_STR-TRAMYEAR sy-vline 
WA_RDEFAULT_DATA_STR-TRAMPY sy-vline 
WA_RDEFAULT_DATA_STR-TRAMLIFE sy-vline 
WA_RDEFAULT_DATA_STR-TRASSMYEAR sy-vline 
WA_RDEFAULT_DATA_STR-TRASSMPY sy-vline 
WA_RDEFAULT_DATA_STR-TRASSMLIFE sy-vline 
WA_RDEFAULT_DATA_STR-FPAYMA sy-vline 
WA_RDEFAULT_DATA_STR-PPAYMA sy-vline 
WA_RDEFAULT_DATA_STR-PASTDUEA sy-vline 
WA_RDEFAULT_DATA_STR-PRINCA sy-vline 
WA_RDEFAULT_DATA_STR-INTERESTA sy-vline 
WA_RDEFAULT_DATA_STR-FEEA sy-vline 
WA_RDEFAULT_DATA_STR-DAYS_PDUE sy-vline 
WA_RDEFAULT_DATA_STR-NSCHPMA sy-vline 
WA_RDEFAULT_DATA_STR-NOAINTBAL sy-vline 
WA_RDEFAULT_DATA_STR-NOAINT sy-vline 
WA_RDEFAULT_DATA_STR-CNT_RATE sy-vline 
WA_RDEFAULT_DATA_STR-DUNN_CONTROL sy-vline 
WA_RDEFAULT_DATA_STR-MANDT sy-vline 
WA_RDEFAULT_DATA_STR-MAHNA sy-vline 
WA_RDEFAULT_DATA_STR-RHYTH sy-vline 
WA_RDEFAULT_DATA_STR-MIVRZ sy-vline 
WA_RDEFAULT_DATA_STR-KULEP sy-vline 
WA_RDEFAULT_DATA_STR-UMSKD sy-vline 
WA_RDEFAULT_DATA_STR-UMSKK sy-vline 
WA_RDEFAULT_DATA_STR-XNUMS sy-vline 
WA_RDEFAULT_DATA_STR-VZSKZ sy-vline 
WA_RDEFAULT_DATA_STR-MAHNR sy-vline 
WA_RDEFAULT_DATA_STR-MAHNS sy-vline 
WA_RDEFAULT_DATA_STR-KALID sy-vline 
WA_RDEFAULT_DATA_STR-XMGER sy-vline 
WA_RDEFAULT_DATA_STR-XSALSH sy-vline 
WA_RDEFAULT_DATA_STR-XIGNVZ sy-vline 
WA_RDEFAULT_DATA_STR-RDDEFDATES sy-vline 
WA_RDEFAULT_DATA_STR-DLASTFP sy-vline 
WA_RDEFAULT_DATA_STR-NEXT_PDUED sy-vline 
WA_RDEFAULT_DATA_STR-NEXT_SCHP sy-vline 
WA_RDEFAULT_DATA_STR-DLASTP sy-vline 
WA_RDEFAULT_DATA_STR-DLASTBILL sy-vline 
WA_RDEFAULT_DATA_STR-DFIRSTDISB sy-vline 
WA_RDEFAULT_DATA_STR-CALCDATE sy-vline 
WA_RDEFAULT_DATA_STR-NONACCRUAL sy-vline 
WA_RDEFAULT_DATA_STR-FLG_NON_ACCR sy-vline 
WA_RDEFAULT_DATA_STR-D_NON_ACCRUAL sy-vline 
WA_RDEFAULT_DATA_STR-D_ACCRUAL sy-vline 
WA_RDEFAULT_DATA_STR-RDDEFAULT_STATUS sy-vline 
WA_RDEFAULT_DATA_STR-STATUS sy-vline 
WA_RDEFAULT_DATA_STR-TEXT sy-vline 
WA_RDEFAULT_DATA_STR-KNB5 sy-vline 
WA_RDEFAULT_DATA_STR-MANDT sy-vline 
WA_RDEFAULT_DATA_STR-KUNNR sy-vline 
WA_RDEFAULT_DATA_STR-BUKRS sy-vline 
WA_RDEFAULT_DATA_STR-MABER sy-vline 
WA_RDEFAULT_DATA_STR-MAHNA sy-vline 
WA_RDEFAULT_DATA_STR-MANSP sy-vline 
WA_RDEFAULT_DATA_STR-MADAT sy-vline 
WA_RDEFAULT_DATA_STR-MAHNS sy-vline 
WA_RDEFAULT_DATA_STR-KNRMA sy-vline 
WA_RDEFAULT_DATA_STR-GMVDT sy-vline 
WA_RDEFAULT_DATA_STR-BUSAB sy-vline      INTO ld_text SEPARATED BY SPACE.

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