ABAP Select data from SAP table RBGM00 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RBGM00 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 RBGM00. 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 RBGM00 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_RBGM00 TYPE STANDARD TABLE OF RBGM00,
      WA_RBGM00 TYPE RBGM00,
      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: <RBGM00> TYPE RBGM00.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RBGM00.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RBGM00
  INTO TABLE IT_RBGM00.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RBGM00
*  INTO TABLE @DATA(IT_RBGM002).
*--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_RBGM00 INDEX 1 INTO DATA(WA_RBGM002).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RBGM00 ASSIGNING <RBGM00>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RBGM00>-MANDT = 1.
<RBGM00>-MGANR = 1.
<RBGM00>-EXGAR = 1.
<RBGM00>-GASOR = 1.
<RBGM00>-GAGRP = 1.

ENDLOOP.

LOOP AT IT_RBGM00 INTO WA_RBGM00.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RBGM00-GAART, sy-vline,
  WA_RBGM00-GAATX, sy-vline,
  WA_RBGM00-GATYP, sy-vline,
  WA_RBGM00-SELEK, sy-vline,
  WA_RBGM00-SELEC, sy-vline,
  WA_RBGM00-POSNM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RBGM00 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_RBGM00 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_RBGM00 INTO WA_RBGM00.


*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 MGANR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RBGM00-MGANR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RBGM00-MGANR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REFGA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RBGM00-REFGA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RBGM00-REFGA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MSEHI
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RBGM00-MSEHI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RBGM00-MSEHI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit LUNIT, internal->external for field UNITC
CALL FUNCTION 'CONVERSION_EXIT_LUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RBGM00-UNITC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RBGM00-UNITC.
WRITE:/ 'New Value:', ld_input.

*Conversion exit LUNIT, internal->external for field UNITS
CALL FUNCTION 'CONVERSION_EXIT_LUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RBGM00-UNITS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RBGM00-UNITS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit LUNIT, internal->external for field UNITR
CALL FUNCTION 'CONVERSION_EXIT_LUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RBGM00-UNITR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RBGM00-UNITR.
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_RBGM00_STR, 
MANDT TYPE STRING,
MGANR TYPE STRING,
EXGAR TYPE STRING,
GASOR TYPE STRING,
GAGRP TYPE STRING,
GAART TYPE STRING,
GAATX TYPE STRING,
GATYP TYPE STRING,
SELEK TYPE STRING,
SELEC TYPE STRING,
POSNM TYPE STRING,
ANPOS TYPE STRING,
TEXTK TYPE STRING,
GAZPS TYPE STRING,
GAZTO TYPE STRING,
GAZNA TYPE STRING,
GAZAL TYPE STRING,
GAZBZ TYPE STRING,
RANGF TYPE STRING,
STTXT TYPE STRING,
REFGA TYPE STRING,
MSEHI TYPE STRING,
MSEHL TYPE STRING,
ATVOR TYPE STRING,
ATDIM TYPE STRING,
ANZDZ TYPE STRING,
UNITC TYPE STRING,
UNITS TYPE STRING,
IODEC TYPE STRING,
IOEXP TYPE STRING,
GAZWT TYPE STRING,
GAZWTI TYPE STRING,
GAZWE TYPE STRING,
UNITR TYPE STRING,
GAZWB TYPE STRING,
GAZWBI TYPE STRING,
GAZWR TYPE STRING,
KZKOF TYPE STRING,
CLASS TYPE STRING,
STDCL TYPE STRING,
FCODE TYPE STRING,
SFCOD TYPE STRING,
KZSEL_INCL TYPE STRING,
KZSEL_EXCL TYPE STRING,
KZOPR_AND TYPE STRING,
KZOPR_OR TYPE STRING,
KZOPR_USR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RBGM00_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_RBGM00_STR-MANDT sy-vline 
WA_RBGM00_STR-MGANR sy-vline 
WA_RBGM00_STR-EXGAR sy-vline 
WA_RBGM00_STR-GASOR sy-vline 
WA_RBGM00_STR-GAGRP sy-vline 
WA_RBGM00_STR-GAART sy-vline 
WA_RBGM00_STR-GAATX sy-vline 
WA_RBGM00_STR-GATYP sy-vline 
WA_RBGM00_STR-SELEK sy-vline 
WA_RBGM00_STR-SELEC sy-vline 
WA_RBGM00_STR-POSNM sy-vline 
WA_RBGM00_STR-ANPOS sy-vline 
WA_RBGM00_STR-TEXTK sy-vline 
WA_RBGM00_STR-GAZPS sy-vline 
WA_RBGM00_STR-GAZTO sy-vline 
WA_RBGM00_STR-GAZNA sy-vline 
WA_RBGM00_STR-GAZAL sy-vline 
WA_RBGM00_STR-GAZBZ sy-vline 
WA_RBGM00_STR-RANGF sy-vline 
WA_RBGM00_STR-STTXT sy-vline 
WA_RBGM00_STR-REFGA sy-vline 
WA_RBGM00_STR-MSEHI sy-vline 
WA_RBGM00_STR-MSEHL sy-vline 
WA_RBGM00_STR-ATVOR sy-vline 
WA_RBGM00_STR-ATDIM sy-vline 
WA_RBGM00_STR-ANZDZ sy-vline 
WA_RBGM00_STR-UNITC sy-vline 
WA_RBGM00_STR-UNITS sy-vline 
WA_RBGM00_STR-IODEC sy-vline 
WA_RBGM00_STR-IOEXP sy-vline 
WA_RBGM00_STR-GAZWT sy-vline 
WA_RBGM00_STR-GAZWTI sy-vline 
WA_RBGM00_STR-GAZWE sy-vline 
WA_RBGM00_STR-UNITR sy-vline 
WA_RBGM00_STR-GAZWB sy-vline 
WA_RBGM00_STR-GAZWBI sy-vline 
WA_RBGM00_STR-GAZWR sy-vline 
WA_RBGM00_STR-KZKOF sy-vline 
WA_RBGM00_STR-CLASS sy-vline 
WA_RBGM00_STR-STDCL sy-vline 
WA_RBGM00_STR-FCODE sy-vline 
WA_RBGM00_STR-SFCOD sy-vline 
WA_RBGM00_STR-KZSEL_INCL sy-vline 
WA_RBGM00_STR-KZSEL_EXCL sy-vline 
WA_RBGM00_STR-KZOPR_AND sy-vline 
WA_RBGM00_STR-KZOPR_OR sy-vline 
WA_RBGM00_STR-KZOPR_USR sy-vline      INTO ld_text SEPARATED BY SPACE.

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