ABAP Select data from SAP table REOBJ_CO into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REOBJ_CO
*  INTO TABLE @DATA(IT_REOBJ_CO2).
*--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_REOBJ_CO INDEX 1 INTO DATA(WA_REOBJ_CO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REOBJ_CO>-FL_SINGLEOBJ = 1.
<REOBJ_CO>-FL_VARIANT = 1.
<REOBJ_CO>-FL_SET = 1.
<REOBJ_CO>-OBART3 = 1.
<REOBJ_CO>-OBJID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REOBJ_CO-OBJTXT, sy-vline,
  WA_REOBJ_CO-SELVAR, sy-vline,
  WA_REOBJ_CO-VARTEXT, sy-vline,
  WA_REOBJ_CO-SETOBART2, sy-vline,
  WA_REOBJ_CO-SETOBART3, sy-vline,
  WA_REOBJ_CO-OBJSET, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REOBJ_CO 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_REOBJ_CO 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_REOBJ_CO INTO WA_REOBJ_CO.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_REOBJ_CO_STR, 
FL_SINGLEOBJ TYPE STRING,
FL_VARIANT TYPE STRING,
FL_SET TYPE STRING,
OBART3 TYPE STRING,
OBJID TYPE STRING,
OBJTXT TYPE STRING,
SELVAR TYPE STRING,
VARTEXT TYPE STRING,
SETOBART2 TYPE STRING,
SETOBART3 TYPE STRING,
OBJSET TYPE STRING,
OBJSETTEXT TYPE STRING,
OBART2 TYPE STRING,
OBJNR TYPE STRING,
SETID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REOBJ_CO_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_REOBJ_CO_STR-FL_SINGLEOBJ sy-vline 
WA_REOBJ_CO_STR-FL_VARIANT sy-vline 
WA_REOBJ_CO_STR-FL_SET sy-vline 
WA_REOBJ_CO_STR-OBART3 sy-vline 
WA_REOBJ_CO_STR-OBJID sy-vline 
WA_REOBJ_CO_STR-OBJTXT sy-vline 
WA_REOBJ_CO_STR-SELVAR sy-vline 
WA_REOBJ_CO_STR-VARTEXT sy-vline 
WA_REOBJ_CO_STR-SETOBART2 sy-vline 
WA_REOBJ_CO_STR-SETOBART3 sy-vline 
WA_REOBJ_CO_STR-OBJSET sy-vline 
WA_REOBJ_CO_STR-OBJSETTEXT sy-vline 
WA_REOBJ_CO_STR-OBART2 sy-vline 
WA_REOBJ_CO_STR-OBJNR sy-vline 
WA_REOBJ_CO_STR-SETID sy-vline      INTO ld_text SEPARATED BY SPACE.

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