ABAP Select data from SAP table REBD_RS_OCC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REBD_RS_OCC
*  INTO TABLE @DATA(IT_REBD_RS_OCC2).
*--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_REBD_RS_OCC INDEX 1 INTO DATA(WA_REBD_RS_OCC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REBD_RS_OCC>-INTRENO = 1.
<REBD_RS_OCC>-INTRENOPS = 1.
<REBD_RS_OCC>-INTRENORS = 1.
<REBD_RS_OCC>-RECNNR = 1.
<REBD_RS_OCC>-INTRENOCN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REBD_RS_OCC-MEAS, sy-vline,
  WA_REBD_RS_OCC-MEASVALUE, sy-vline,
  WA_REBD_RS_OCC-MEASVALUEIS, sy-vline,
  WA_REBD_RS_OCC-MEASUNIT, sy-vline,
  WA_REBD_RS_OCC-VALIDFROM, sy-vline,
  WA_REBD_RS_OCC-VALIDTO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REBD_RS_OCC 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_REBD_RS_OCC 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_REBD_RS_OCC INTO WA_REBD_RS_OCC.


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

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

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

*Conversion exit REDAT, internal->external for field VALIDTO
CALL FUNCTION 'CONVERSION_EXIT_REDAT_OUTPUT'
  EXPORTING
    input =                      WA_REBD_RS_OCC-VALIDTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REBD_RS_OCC-VALIDTO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SMENR, internal->external for field RONORS
CALL FUNCTION 'CONVERSION_EXIT_SMENR_OUTPUT'
  EXPORTING
    input =                      WA_REBD_RS_OCC-RONORS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REBD_RS_OCC-RONORS.
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_REBD_RS_OCC_STR, 
INTRENO TYPE STRING,
INTRENOPS TYPE STRING,
INTRENORS TYPE STRING,
RECNNR TYPE STRING,
INTRENOCN TYPE STRING,
MEAS TYPE STRING,
MEASVALUE TYPE STRING,
MEASVALUEIS TYPE STRING,
MEASUNIT TYPE STRING,
VALIDFROM TYPE STRING,
VALIDTO TYPE STRING,
ROWNO TYPE STRING,
RONORS TYPE STRING,
RSOBJECT TYPE STRING,
RSCREATED TYPE STRING,
CNLINKED TYPE STRING,
USAGETYPE TYPE STRING,
ISOBJRELCOMP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REBD_RS_OCC_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_REBD_RS_OCC_STR-INTRENO sy-vline 
WA_REBD_RS_OCC_STR-INTRENOPS sy-vline 
WA_REBD_RS_OCC_STR-INTRENORS sy-vline 
WA_REBD_RS_OCC_STR-RECNNR sy-vline 
WA_REBD_RS_OCC_STR-INTRENOCN sy-vline 
WA_REBD_RS_OCC_STR-MEAS sy-vline 
WA_REBD_RS_OCC_STR-MEASVALUE sy-vline 
WA_REBD_RS_OCC_STR-MEASVALUEIS sy-vline 
WA_REBD_RS_OCC_STR-MEASUNIT sy-vline 
WA_REBD_RS_OCC_STR-VALIDFROM sy-vline 
WA_REBD_RS_OCC_STR-VALIDTO sy-vline 
WA_REBD_RS_OCC_STR-ROWNO sy-vline 
WA_REBD_RS_OCC_STR-RONORS sy-vline 
WA_REBD_RS_OCC_STR-RSOBJECT sy-vline 
WA_REBD_RS_OCC_STR-RSCREATED sy-vline 
WA_REBD_RS_OCC_STR-CNLINKED sy-vline 
WA_REBD_RS_OCC_STR-USAGETYPE sy-vline 
WA_REBD_RS_OCC_STR-ISOBJRELCOMP sy-vline      INTO ld_text SEPARATED BY SPACE.

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