ABAP Select data from SAP table RCOSTELMNTGRPH into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RCOSTELMNTGRPH
*  INTO TABLE @DATA(IT_RCOSTELMNTGRPH2).
*--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_RCOSTELMNTGRPH INDEX 1 INTO DATA(WA_RCOSTELMNTGRPH2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RCOSTELMNTGRPH>-MANDT = 1.
<RCOSTELMNTGRPH>-SETCLASS = 1.
<RCOSTELMNTGRPH>-CHARTOFACCOUNTS = 1.
<RCOSTELMNTGRPH>-COSTELEMENTGROUPHIERARCHYNODE = 1.
<RCOSTELMNTGRPH>-HIERARCHYPARENTNODE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RCOSTELMNTGRPH-PARENTSETSUBCLASS, sy-vline,
  WA_RCOSTELMNTGRPH-HIERARCHYLEVEL, sy-vline,
  WA_RCOSTELMNTGRPH-COSTELEMENT, sy-vline,
  WA_RCOSTELMNTGRPH-CONTROLLINGAREA, sy-vline,
  WA_RCOSTELMNTGRPH-DRILLSTATE, sy-vline,
  WA_RCOSTELMNTGRPH-COSTELMNTGRPHIERNODETYPEFILTER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RCOSTELMNTGRPH 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_RCOSTELMNTGRPH 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_RCOSTELMNTGRPH INTO WA_RCOSTELMNTGRPH.


*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 COSTELEMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RCOSTELMNTGRPH-COSTELEMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCOSTELMNTGRPH-COSTELEMENT.
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_RCOSTELMNTGRPH_STR, 
MANDT TYPE STRING,
SETCLASS TYPE STRING,
CHARTOFACCOUNTS TYPE STRING,
COSTELEMENTGROUPHIERARCHYNODE TYPE STRING,
HIERARCHYPARENTNODE TYPE STRING,
PARENTSETSUBCLASS TYPE STRING,
HIERARCHYLEVEL TYPE STRING,
COSTELEMENT TYPE STRING,
CONTROLLINGAREA TYPE STRING,
DRILLSTATE TYPE STRING,
COSTELMNTGRPHIERNODETYPEFILTER TYPE STRING,
COSTELEMENTNAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RCOSTELMNTGRPH_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_RCOSTELMNTGRPH_STR-MANDT sy-vline 
WA_RCOSTELMNTGRPH_STR-SETCLASS sy-vline 
WA_RCOSTELMNTGRPH_STR-CHARTOFACCOUNTS sy-vline 
WA_RCOSTELMNTGRPH_STR-COSTELEMENTGROUPHIERARCHYNODE sy-vline 
WA_RCOSTELMNTGRPH_STR-HIERARCHYPARENTNODE sy-vline 
WA_RCOSTELMNTGRPH_STR-PARENTSETSUBCLASS sy-vline 
WA_RCOSTELMNTGRPH_STR-HIERARCHYLEVEL sy-vline 
WA_RCOSTELMNTGRPH_STR-COSTELEMENT sy-vline 
WA_RCOSTELMNTGRPH_STR-CONTROLLINGAREA sy-vline 
WA_RCOSTELMNTGRPH_STR-DRILLSTATE sy-vline 
WA_RCOSTELMNTGRPH_STR-COSTELMNTGRPHIERNODETYPEFILTER sy-vline 
WA_RCOSTELMNTGRPH_STR-COSTELEMENTNAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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