ABAP Select data from SAP table IREACSOBJMD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IREACSOBJMD
*  INTO TABLE @DATA(IT_IREACSOBJMD2).
*--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_IREACSOBJMD INDEX 1 INTO DATA(WA_IREACSOBJMD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IREACSOBJMD>-MANDT = 1.
<IREACSOBJMD>-REALESTATEPRTACCESSORYUUID = 1.
<IREACSOBJMD>-REALESTATEPRTUUID = 1.
<IREACSOBJMD>-REALESTATEPRTID = 1.
<IREACSOBJMD>-REALESTATEPRTACCESSORYTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IREACSOBJMD-REALESTATEPRTNUMBEROFACCESSORY, sy-vline,
  WA_IREACSOBJMD-REALESTATEPRTACCESSORYAMOUNT, sy-vline,
  WA_IREACSOBJMD-REALESTATEPRTACCESSORYCURRENCY, sy-vline,
  WA_IREACSOBJMD-REALESTATEPRTACCSRYISBUILDING, sy-vline,
  WA_IREACSOBJMD-REALESTATEPRTACCSRYDESCRIPTION, sy-vline,
  WA_IREACSOBJMD-REALESTATEPRTACCESSORYID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IREACSOBJMD 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_IREACSOBJMD 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_IREACSOBJMD INTO WA_IREACSOBJMD.


*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 REALESTATEPRTACCSRYISBUILDING
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IREACSOBJMD-REALESTATEPRTACCSRYISBUILDING
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IREACSOBJMD-REALESTATEPRTACCSRYISBUILDING.
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_IREACSOBJMD_STR, 
MANDT TYPE STRING,
REALESTATEPRTACCESSORYUUID TYPE STRING,
REALESTATEPRTUUID TYPE STRING,
REALESTATEPRTID TYPE STRING,
REALESTATEPRTACCESSORYTYPE TYPE STRING,
REALESTATEPRTNUMBEROFACCESSORY TYPE STRING,
REALESTATEPRTACCESSORYAMOUNT TYPE STRING,
REALESTATEPRTACCESSORYCURRENCY TYPE STRING,
REALESTATEPRTACCSRYISBUILDING TYPE STRING,
REALESTATEPRTACCSRYDESCRIPTION TYPE STRING,
REALESTATEPRTACCESSORYID TYPE STRING,
REALESTATEPRTACCSRYRISKCODE TYPE STRING,
REALESTTEPRTACCSRYSFTYDISCSIGN TYPE STRING,
REALESTATEPRTACCSRYSFTYDISCPCT TYPE STRING,
REALESTATEPRTACCSRYSFTYDISCAMT TYPE STRING,
REALESTTEPRTACCSRYSFTYDISCCRCY TYPE STRING,
REALESTATEPRTACCSRYVALNTYPE TYPE STRING,
REALESTATEPRTACCSRYVALNFRQCY TYPE STRING,
REALESTATEPRTACCSRYVALNPERIOD TYPE STRING,
REALESTTEPRTACCSRYLASTREVALDTE TYPE STRING,
REALESTTEPRTACCSRYREVALSTRTDTE TYPE STRING,
REALESTTEPRTACCSRYREVALENDDTE TYPE STRING,
REALESTATEPRTACCSRYLENDGSIGN TYPE STRING,
REALESTTEPRTACCSRY1STLENDGRATE TYPE STRING,
REALESTTEPRTACCSRY2NDLENDGRATE TYPE STRING,
REALESTTEPRTACCSRY3RDLENDGRATE TYPE STRING,
REALESTTEPRTACCSRY4THLENDGRATE TYPE STRING,
REALESTTEPRTACCSRY5THLENDGRATE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IREACSOBJMD_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_IREACSOBJMD_STR-MANDT sy-vline 
WA_IREACSOBJMD_STR-REALESTATEPRTACCESSORYUUID sy-vline 
WA_IREACSOBJMD_STR-REALESTATEPRTUUID sy-vline 
WA_IREACSOBJMD_STR-REALESTATEPRTID sy-vline 
WA_IREACSOBJMD_STR-REALESTATEPRTACCESSORYTYPE sy-vline 
WA_IREACSOBJMD_STR-REALESTATEPRTNUMBEROFACCESSORY sy-vline 
WA_IREACSOBJMD_STR-REALESTATEPRTACCESSORYAMOUNT sy-vline 
WA_IREACSOBJMD_STR-REALESTATEPRTACCESSORYCURRENCY sy-vline 
WA_IREACSOBJMD_STR-REALESTATEPRTACCSRYISBUILDING sy-vline 
WA_IREACSOBJMD_STR-REALESTATEPRTACCSRYDESCRIPTION sy-vline 
WA_IREACSOBJMD_STR-REALESTATEPRTACCESSORYID sy-vline 
WA_IREACSOBJMD_STR-REALESTATEPRTACCSRYRISKCODE sy-vline 
WA_IREACSOBJMD_STR-REALESTTEPRTACCSRYSFTYDISCSIGN sy-vline 
WA_IREACSOBJMD_STR-REALESTATEPRTACCSRYSFTYDISCPCT sy-vline 
WA_IREACSOBJMD_STR-REALESTATEPRTACCSRYSFTYDISCAMT sy-vline 
WA_IREACSOBJMD_STR-REALESTTEPRTACCSRYSFTYDISCCRCY sy-vline 
WA_IREACSOBJMD_STR-REALESTATEPRTACCSRYVALNTYPE sy-vline 
WA_IREACSOBJMD_STR-REALESTATEPRTACCSRYVALNFRQCY sy-vline 
WA_IREACSOBJMD_STR-REALESTATEPRTACCSRYVALNPERIOD sy-vline 
WA_IREACSOBJMD_STR-REALESTTEPRTACCSRYLASTREVALDTE sy-vline 
WA_IREACSOBJMD_STR-REALESTTEPRTACCSRYREVALSTRTDTE sy-vline 
WA_IREACSOBJMD_STR-REALESTTEPRTACCSRYREVALENDDTE sy-vline 
WA_IREACSOBJMD_STR-REALESTATEPRTACCSRYLENDGSIGN sy-vline 
WA_IREACSOBJMD_STR-REALESTTEPRTACCSRY1STLENDGRATE sy-vline 
WA_IREACSOBJMD_STR-REALESTTEPRTACCSRY2NDLENDGRATE sy-vline 
WA_IREACSOBJMD_STR-REALESTTEPRTACCSRY3RDLENDGRATE sy-vline 
WA_IREACSOBJMD_STR-REALESTTEPRTACCSRY4THLENDGRATE sy-vline 
WA_IREACSOBJMD_STR-REALESTTEPRTACCSRY5THLENDGRATE sy-vline      INTO ld_text SEPARATED BY SPACE.

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