ABAP Select data from SAP table IDISPOBJ into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IDISPOBJ
*  INTO TABLE @DATA(IT_IDISPOBJ2).
*--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_IDISPOBJ INDEX 1 INTO DATA(WA_IDISPOBJ2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IDISPOBJ>-MANDT = 1.
<IDISPOBJ>-OBJECTTYPE = 1.
<IDISPOBJ>-OBJECTKEY = 1.
<IDISPOBJ>-CASEUNIQUEID = 1.
<IDISPOBJ>-RELATIONSHIPNUMBER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IDISPOBJ-DISPUTECASEISCONFIRMED, sy-vline,
  WA_IDISPOBJ-DISPUTECASEISVOIDED, sy-vline,
  WA_IDISPOBJ-COMPANYCODE, sy-vline,
  WA_IDISPOBJ-ACCOUNTINGDOCUMENT, sy-vline,
  WA_IDISPOBJ-FISCALYEAR, sy-vline,
  WA_IDISPOBJ-ACCOUNTINGDOCUMENTITEM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IDISPOBJ 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_IDISPOBJ 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_IDISPOBJ INTO WA_IDISPOBJ.


*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_IDISPOBJ_STR, 
MANDT TYPE STRING,
OBJECTTYPE TYPE STRING,
OBJECTKEY TYPE STRING,
CASEUNIQUEID TYPE STRING,
RELATIONSHIPNUMBER TYPE STRING,
DISPUTECASEISCONFIRMED TYPE STRING,
DISPUTECASEISVOIDED TYPE STRING,
COMPANYCODE TYPE STRING,
ACCOUNTINGDOCUMENT TYPE STRING,
FISCALYEAR TYPE STRING,
ACCOUNTINGDOCUMENTITEM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IDISPOBJ_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_IDISPOBJ_STR-MANDT sy-vline 
WA_IDISPOBJ_STR-OBJECTTYPE sy-vline 
WA_IDISPOBJ_STR-OBJECTKEY sy-vline 
WA_IDISPOBJ_STR-CASEUNIQUEID sy-vline 
WA_IDISPOBJ_STR-RELATIONSHIPNUMBER sy-vline 
WA_IDISPOBJ_STR-DISPUTECASEISCONFIRMED sy-vline 
WA_IDISPOBJ_STR-DISPUTECASEISVOIDED sy-vline 
WA_IDISPOBJ_STR-COMPANYCODE sy-vline 
WA_IDISPOBJ_STR-ACCOUNTINGDOCUMENT sy-vline 
WA_IDISPOBJ_STR-FISCALYEAR sy-vline 
WA_IDISPOBJ_STR-ACCOUNTINGDOCUMENTITEM sy-vline      INTO ld_text SEPARATED BY SPACE.

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