ABAP Select data from SAP table FCO_OVHD_REFDR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FCO_OVHD_REFDR
*  INTO TABLE @DATA(IT_FCO_OVHD_REFDR2).
*--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_FCO_OVHD_REFDR INDEX 1 INTO DATA(WA_FCO_OVHD_REFDR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FCO_OVHD_REFDR>-MANDT = 1.
<FCO_OVHD_REFDR>-DRAFTUUID = 1.
<FCO_OVHD_REFDR>-PARENTDRAFTUUID = 1.
<FCO_OVHD_REFDR>-CONTROLLINGOBJECT = 1.
<FCO_OVHD_REFDR>-REFERENCEDOCUMENTTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FCO_OVHD_REFDR-REFERENCEDOCUMENT, sy-vline,
  WA_FCO_OVHD_REFDR-CONTROLLINGOVERHEADDRAFTUUID, sy-vline,
  WA_FCO_OVHD_REFDR-HASACTIVEENTITY, sy-vline,
  WA_FCO_OVHD_REFDR-DRAFTENTITYCREATIONDATETIME, sy-vline,
  WA_FCO_OVHD_REFDR-DRAFTENTITYLASTCHANGEDATETIME, sy-vline,
  WA_FCO_OVHD_REFDR-DRAFTADMINISTRATIVEDATAUUID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FCO_OVHD_REFDR 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_FCO_OVHD_REFDR 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_FCO_OVHD_REFDR INTO WA_FCO_OVHD_REFDR.


*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 REFERENCEDOCUMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FCO_OVHD_REFDR-REFERENCEDOCUMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FCO_OVHD_REFDR-REFERENCEDOCUMENT.
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_FCO_OVHD_REFDR_STR, 
MANDT TYPE STRING,
DRAFTUUID TYPE STRING,
PARENTDRAFTUUID TYPE STRING,
CONTROLLINGOBJECT TYPE STRING,
REFERENCEDOCUMENTTYPE TYPE STRING,
REFERENCEDOCUMENT TYPE STRING,
CONTROLLINGOVERHEADDRAFTUUID TYPE STRING,
HASACTIVEENTITY TYPE STRING,
DRAFTENTITYCREATIONDATETIME TYPE STRING,
DRAFTENTITYLASTCHANGEDATETIME TYPE STRING,
DRAFTADMINISTRATIVEDATAUUID TYPE STRING,
DRAFTENTITYCONSISTENCYSTATUS TYPE STRING,
DRAFTENTITYOPERATIONCODE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FCO_OVHD_REFDR_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_FCO_OVHD_REFDR_STR-MANDT sy-vline 
WA_FCO_OVHD_REFDR_STR-DRAFTUUID sy-vline 
WA_FCO_OVHD_REFDR_STR-PARENTDRAFTUUID sy-vline 
WA_FCO_OVHD_REFDR_STR-CONTROLLINGOBJECT sy-vline 
WA_FCO_OVHD_REFDR_STR-REFERENCEDOCUMENTTYPE sy-vline 
WA_FCO_OVHD_REFDR_STR-REFERENCEDOCUMENT sy-vline 
WA_FCO_OVHD_REFDR_STR-CONTROLLINGOVERHEADDRAFTUUID sy-vline 
WA_FCO_OVHD_REFDR_STR-HASACTIVEENTITY sy-vline 
WA_FCO_OVHD_REFDR_STR-DRAFTENTITYCREATIONDATETIME sy-vline 
WA_FCO_OVHD_REFDR_STR-DRAFTENTITYLASTCHANGEDATETIME sy-vline 
WA_FCO_OVHD_REFDR_STR-DRAFTADMINISTRATIVEDATAUUID sy-vline 
WA_FCO_OVHD_REFDR_STR-DRAFTENTITYCONSISTENCYSTATUS sy-vline 
WA_FCO_OVHD_REFDR_STR-DRAFTENTITYOPERATIONCODE sy-vline      INTO ld_text SEPARATED BY SPACE.

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