ABAP Select data from SAP table RDEBTTR_DISPLAY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RDEBTTR_DISPLAY
*  INTO TABLE @DATA(IT_RDEBTTR_DISPLAY2).
*--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_RDEBTTR_DISPLAY INDEX 1 INTO DATA(WA_RDEBTTR_DISPLAY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RDEBTTR_DISPLAY>-XBO_STATUS = 1.
<RDEBTTR_DISPLAY>-XSFGKZ = 1.
<RDEBTTR_DISPLAY>-XNOTIZ = 1.
<RDEBTTR_DISPLAY>-XBEWART = 1.
<RDEBTTR_DISPLAY>-RERF = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RDEBTTR_DISPLAY-DERF, sy-vline,
  WA_RDEBTTR_DISPLAY-TERF, sy-vline,
  WA_RDEBTTR_DISPLAY-RBEAR, sy-vline,
  WA_RDEBTTR_DISPLAY-DBEAR, sy-vline,
  WA_RDEBTTR_DISPLAY-TBEAR, sy-vline,
  WA_RDEBTTR_DISPLAY-REHER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RDEBTTR_DISPLAY 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_RDEBTTR_DISPLAY 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_RDEBTTR_DISPLAY INTO WA_RDEBTTR_DISPLAY.


*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 RKLAMMER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RDEBTTR_DISPLAY-RKLAMMER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RDEBTTR_DISPLAY-RKLAMMER.
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_RDEBTTR_DISPLAY_STR, 
XBO_STATUS TYPE STRING,
XSFGKZ TYPE STRING,
XNOTIZ TYPE STRING,
XBEWART TYPE STRING,
RERF TYPE STRING,
DERF TYPE STRING,
TERF TYPE STRING,
RBEAR TYPE STRING,
DBEAR TYPE STRING,
TBEAR TYPE STRING,
REHER TYPE STRING,
RBHER TYPE STRING,
XPARTNAME TYPE STRING,
BRPWR TYPE STRING,
OPOS TYPE STRING,
GESAMTFRD TYPE STRING,
SBWHR TYPE STRING,
RKLAMMER TYPE STRING,
SMULTCH TYPE STRING,
SFGST TYPE STRING,
BANK_ID_TEXT TYPE STRING,
ZAHLWEG_TEXT TYPE STRING,
DDISPO_MIN TYPE STRING,
DDISPO_MAX TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RDEBTTR_DISPLAY_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_RDEBTTR_DISPLAY_STR-XBO_STATUS sy-vline 
WA_RDEBTTR_DISPLAY_STR-XSFGKZ sy-vline 
WA_RDEBTTR_DISPLAY_STR-XNOTIZ sy-vline 
WA_RDEBTTR_DISPLAY_STR-XBEWART sy-vline 
WA_RDEBTTR_DISPLAY_STR-RERF sy-vline 
WA_RDEBTTR_DISPLAY_STR-DERF sy-vline 
WA_RDEBTTR_DISPLAY_STR-TERF sy-vline 
WA_RDEBTTR_DISPLAY_STR-RBEAR sy-vline 
WA_RDEBTTR_DISPLAY_STR-DBEAR sy-vline 
WA_RDEBTTR_DISPLAY_STR-TBEAR sy-vline 
WA_RDEBTTR_DISPLAY_STR-REHER sy-vline 
WA_RDEBTTR_DISPLAY_STR-RBHER sy-vline 
WA_RDEBTTR_DISPLAY_STR-XPARTNAME sy-vline 
WA_RDEBTTR_DISPLAY_STR-BRPWR sy-vline 
WA_RDEBTTR_DISPLAY_STR-OPOS sy-vline 
WA_RDEBTTR_DISPLAY_STR-GESAMTFRD sy-vline 
WA_RDEBTTR_DISPLAY_STR-SBWHR sy-vline 
WA_RDEBTTR_DISPLAY_STR-RKLAMMER sy-vline 
WA_RDEBTTR_DISPLAY_STR-SMULTCH sy-vline 
WA_RDEBTTR_DISPLAY_STR-SFGST sy-vline 
WA_RDEBTTR_DISPLAY_STR-BANK_ID_TEXT sy-vline 
WA_RDEBTTR_DISPLAY_STR-ZAHLWEG_TEXT sy-vline 
WA_RDEBTTR_DISPLAY_STR-DDISPO_MIN sy-vline 
WA_RDEBTTR_DISPLAY_STR-DDISPO_MAX sy-vline      INTO ld_text SEPARATED BY SPACE.

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