ABAP Select data from SAP table RBEX into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RBEX
*  INTO TABLE @DATA(IT_RBEX2).
*--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_RBEX INDEX 1 INTO DATA(WA_RBEX2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RBEX>-MANDT = 1.
<RBEX>-BELNR = 1.
<RBEX>-BUZEI = 1.
<RBEX>-GJAHR = 1.
<RBEX>-COBL_NR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RBEX-BPUMZ, sy-vline,
  WA_RBEX-BPUMN, sy-vline,
  WA_RBEX-NETWR, sy-vline,
  WA_RBEX-BSMNG, sy-vline,
  WA_RBEX-WEMNG, sy-vline,
  WA_RBEX-REMNG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RBEX 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_RBEX 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_RBEX INTO WA_RBEX.


*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 BELNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RBEX-BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RBEX-BELNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_RBEX-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RBEX-GJAHR.
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_RBEX_STR, 
MANDT TYPE STRING,
BELNR TYPE STRING,
BUZEI TYPE STRING,
GJAHR TYPE STRING,
COBL_NR TYPE STRING,
BPUMZ TYPE STRING,
BPUMN TYPE STRING,
NETWR TYPE STRING,
BSMNG TYPE STRING,
WEMNG TYPE STRING,
REMNG TYPE STRING,
BPREM TYPE STRING,
BPWEM TYPE STRING,
REEWR TYPE STRING,
REFWR TYPE STRING,
REWRT TYPE STRING,
REWWR TYPE STRING,
WENWR TYPE STRING,
WEWRT TYPE STRING,
WEWWR TYPE STRING,
NOQUANTITY TYPE STRING,
PRDIFF TYPE STRING,
DIFFN TYPE STRING,
DIFFMW TYPE STRING,
MRM_ZLSPR TYPE STRING,
DMBTR TYPE STRING,
MATKL TYPE STRING,
TXZ01 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RBEX_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_RBEX_STR-MANDT sy-vline 
WA_RBEX_STR-BELNR sy-vline 
WA_RBEX_STR-BUZEI sy-vline 
WA_RBEX_STR-GJAHR sy-vline 
WA_RBEX_STR-COBL_NR sy-vline 
WA_RBEX_STR-BPUMZ sy-vline 
WA_RBEX_STR-BPUMN sy-vline 
WA_RBEX_STR-NETWR sy-vline 
WA_RBEX_STR-BSMNG sy-vline 
WA_RBEX_STR-WEMNG sy-vline 
WA_RBEX_STR-REMNG sy-vline 
WA_RBEX_STR-BPREM sy-vline 
WA_RBEX_STR-BPWEM sy-vline 
WA_RBEX_STR-REEWR sy-vline 
WA_RBEX_STR-REFWR sy-vline 
WA_RBEX_STR-REWRT sy-vline 
WA_RBEX_STR-REWWR sy-vline 
WA_RBEX_STR-WENWR sy-vline 
WA_RBEX_STR-WEWRT sy-vline 
WA_RBEX_STR-WEWWR sy-vline 
WA_RBEX_STR-NOQUANTITY sy-vline 
WA_RBEX_STR-PRDIFF sy-vline 
WA_RBEX_STR-DIFFN sy-vline 
WA_RBEX_STR-DIFFMW sy-vline 
WA_RBEX_STR-MRM_ZLSPR sy-vline 
WA_RBEX_STR-DMBTR sy-vline 
WA_RBEX_STR-MATKL sy-vline 
WA_RBEX_STR-TXZ01 sy-vline      INTO ld_text SEPARATED BY SPACE.

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