ABAP Select data from SAP table RBET into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RBET
*  INTO TABLE @DATA(IT_RBET2).
*--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_RBET INDEX 1 INTO DATA(WA_RBET2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RBET>-POSNR = 1.
<RBET>-PDATU = 1.
<RBET>-WDATU = 1.
<RBET>-PLNMG = 1.
<RBET>-ENTMG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RBET-UPLMG, sy-vline,
  WA_RBET-ENTLI, sy-vline,
  WA_RBET-ENTLU, sy-vline,
  WA_RBET-PERXX, sy-vline,
  WA_RBET-ZUOKR, sy-vline,
  WA_RBET-UPDKZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RBET 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_RBET 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_RBET INTO WA_RBET.


*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 ISOLA, internal->external for field SPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_RBET-SPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RBET-SPRAS.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RBET-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RBET-MEINS.
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_RBET_STR, 
POSNR TYPE STRING,
PDATU TYPE STRING,
WDATU TYPE STRING,
PLNMG TYPE STRING,
ENTMG TYPE STRING,
UPLMG TYPE STRING,
ENTLI TYPE STRING,
ENTLU TYPE STRING,
PERXX TYPE STRING,
ZUOKR TYPE STRING,
UPDKZ TYPE STRING,
LOEKZ TYPE STRING,
DBVKZ TYPE STRING,
FIXMG TYPE STRING,
SPRAS TYPE STRING,
DBMNG TYPE STRING,
SERNR TYPE STRING,
VERID TYPE STRING,
ERFME TYPE STRING,
ERFMG TYPE STRING,
UMREZ TYPE STRING,
UMREN TYPE STRING,
MEINS TYPE STRING,
TXTET TYPE STRING,
TXTVB TYPE STRING,
LAEDA TYPE STRING,
UZEIT TYPE STRING,
AENAM TYPE STRING,
HISKZ TYPE STRING,
BEDAE TYPE STRING,
VERSB TYPE STRING,
PBDNR TYPE STRING,
CUOBJ TYPE STRING,
STPKT TYPE STRING,
SHVIS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RBET_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_RBET_STR-POSNR sy-vline 
WA_RBET_STR-PDATU sy-vline 
WA_RBET_STR-WDATU sy-vline 
WA_RBET_STR-PLNMG sy-vline 
WA_RBET_STR-ENTMG sy-vline 
WA_RBET_STR-UPLMG sy-vline 
WA_RBET_STR-ENTLI sy-vline 
WA_RBET_STR-ENTLU sy-vline 
WA_RBET_STR-PERXX sy-vline 
WA_RBET_STR-ZUOKR sy-vline 
WA_RBET_STR-UPDKZ sy-vline 
WA_RBET_STR-LOEKZ sy-vline 
WA_RBET_STR-DBVKZ sy-vline 
WA_RBET_STR-FIXMG sy-vline 
WA_RBET_STR-SPRAS sy-vline 
WA_RBET_STR-DBMNG sy-vline 
WA_RBET_STR-SERNR sy-vline 
WA_RBET_STR-VERID sy-vline 
WA_RBET_STR-ERFME sy-vline 
WA_RBET_STR-ERFMG sy-vline 
WA_RBET_STR-UMREZ sy-vline 
WA_RBET_STR-UMREN sy-vline 
WA_RBET_STR-MEINS sy-vline 
WA_RBET_STR-TXTET sy-vline 
WA_RBET_STR-TXTVB sy-vline 
WA_RBET_STR-LAEDA sy-vline 
WA_RBET_STR-UZEIT sy-vline 
WA_RBET_STR-AENAM sy-vline 
WA_RBET_STR-HISKZ sy-vline 
WA_RBET_STR-BEDAE sy-vline 
WA_RBET_STR-VERSB sy-vline 
WA_RBET_STR-PBDNR sy-vline 
WA_RBET_STR-CUOBJ sy-vline 
WA_RBET_STR-STPKT sy-vline 
WA_RBET_STR-SHVIS sy-vline      INTO ld_text SEPARATED BY SPACE.

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