ABAP Select data from SAP table DDOBJCOST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DDOBJCOST
*  INTO TABLE @DATA(IT_DDOBJCOST2).
*--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_DDOBJCOST INDEX 1 INTO DATA(WA_DDOBJCOST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DDOBJCOST>-ANY = 1.
<DDOBJCOST>-DOMA = 1.
<DDOBJCOST>-DTEL = 1.
<DDOBJCOST>-TTYP = 1.
<DDOBJCOST>-TABL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DDOBJCOST-SQLT, sy-vline,
  WA_DDOBJCOST-VIEW, sy-vline,
  WA_DDOBJCOST-ENQU, sy-vline,
  WA_DDOBJCOST-SHLP, sy-vline,
  WA_DDOBJCOST-MCOB, sy-vline,
  WA_DDOBJCOST-MCID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DDOBJCOST 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_DDOBJCOST 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_DDOBJCOST INTO WA_DDOBJCOST.


*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_DDOBJCOST_STR, 
ANY TYPE STRING,
DOMA TYPE STRING,
DTEL TYPE STRING,
TTYP TYPE STRING,
TABL TYPE STRING,
SQLT TYPE STRING,
VIEW TYPE STRING,
ENQU TYPE STRING,
SHLP TYPE STRING,
MCOB TYPE STRING,
MCID TYPE STRING,
INDX TYPE STRING,
TABT TYPE STRING,
NODD TYPE STRING,
DDLS TYPE STRING,
OTHERS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DDOBJCOST_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_DDOBJCOST_STR-ANY sy-vline 
WA_DDOBJCOST_STR-DOMA sy-vline 
WA_DDOBJCOST_STR-DTEL sy-vline 
WA_DDOBJCOST_STR-TTYP sy-vline 
WA_DDOBJCOST_STR-TABL sy-vline 
WA_DDOBJCOST_STR-SQLT sy-vline 
WA_DDOBJCOST_STR-VIEW sy-vline 
WA_DDOBJCOST_STR-ENQU sy-vline 
WA_DDOBJCOST_STR-SHLP sy-vline 
WA_DDOBJCOST_STR-MCOB sy-vline 
WA_DDOBJCOST_STR-MCID sy-vline 
WA_DDOBJCOST_STR-INDX sy-vline 
WA_DDOBJCOST_STR-TABT sy-vline 
WA_DDOBJCOST_STR-NODD sy-vline 
WA_DDOBJCOST_STR-DDLS sy-vline 
WA_DDOBJCOST_STR-OTHERS sy-vline      INTO ld_text SEPARATED BY SPACE.

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