ABAP Select data from SAP table IREINTOBJECTREL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IREINTOBJECTREL
*  INTO TABLE @DATA(IT_IREINTOBJECTREL2).
*--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_IREINTOBJECTREL INDEX 1 INTO DATA(WA_IREINTOBJECTREL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IREINTOBJECTREL>-MANDT = 1.
<IREINTOBJECTREL>-REINTEGOBJECTRELATIONUUID = 1.
<IREINTOBJECTREL>-INTERNALREALESTATENUMBER = 1.
<IREINTOBJECTREL>-INTERNALREALESTATENUMBERRLTN = 1.
<IREINTOBJECTREL>-VALIDITYSTARTDATE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IREINTOBJECTREL-VALIDITYENDDATE, sy-vline,
  WA_IREINTOBJECTREL-REISOBJECTRELATIONPARTIAL, sy-vline,
  WA_IREINTOBJECTREL-REMEASUREMENTTYPE, sy-vline,
  WA_IREINTOBJECTREL-REMEASUREMENTPARTIALQUANTITY, sy-vline,
  WA_IREINTOBJECTREL-REMEASUREMENTUNIT, sy-vline,
  WA_IREINTOBJECTREL-REINTERNALNUMBERFORUSEENABLE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IREINTOBJECTREL 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_IREINTOBJECTREL 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_IREINTOBJECTREL INTO WA_IREINTOBJECTREL.


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

*Conversion exit CUNIT, internal->external for field REMEASUREMENTUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IREINTOBJECTREL-REMEASUREMENTUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IREINTOBJECTREL-REMEASUREMENTUNIT.
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_IREINTOBJECTREL_STR, 
MANDT TYPE STRING,
REINTEGOBJECTRELATIONUUID TYPE STRING,
INTERNALREALESTATENUMBER TYPE STRING,
INTERNALREALESTATENUMBERRLTN TYPE STRING,
VALIDITYSTARTDATE TYPE STRING,
VALIDITYENDDATE TYPE STRING,
REISOBJECTRELATIONPARTIAL TYPE STRING,
REMEASUREMENTTYPE TYPE STRING,
REMEASUREMENTPARTIALQUANTITY TYPE STRING,
REMEASUREMENTUNIT TYPE STRING,
REINTERNALNUMBERFORUSEENABLE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IREINTOBJECTREL_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_IREINTOBJECTREL_STR-MANDT sy-vline 
WA_IREINTOBJECTREL_STR-REINTEGOBJECTRELATIONUUID sy-vline 
WA_IREINTOBJECTREL_STR-INTERNALREALESTATENUMBER sy-vline 
WA_IREINTOBJECTREL_STR-INTERNALREALESTATENUMBERRLTN sy-vline 
WA_IREINTOBJECTREL_STR-VALIDITYSTARTDATE sy-vline 
WA_IREINTOBJECTREL_STR-VALIDITYENDDATE sy-vline 
WA_IREINTOBJECTREL_STR-REISOBJECTRELATIONPARTIAL sy-vline 
WA_IREINTOBJECTREL_STR-REMEASUREMENTTYPE sy-vline 
WA_IREINTOBJECTREL_STR-REMEASUREMENTPARTIALQUANTITY sy-vline 
WA_IREINTOBJECTREL_STR-REMEASUREMENTUNIT sy-vline 
WA_IREINTOBJECTREL_STR-REINTERNALNUMBERFORUSEENABLE sy-vline      INTO ld_text SEPARATED BY SPACE.

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