ABAP Select data from SAP table RCOCFV into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RCOCFV
*  INTO TABLE @DATA(IT_RCOCFV2).
*--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_RCOCFV INDEX 1 INTO DATA(WA_RCOCFV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RCOCFV>-MANDT = 1.
<RCOCFV>-BID = 1.
<RCOCFV>-OPID = 1.
<RCOCFV>-PHID = 1.
<RCOCFV>-FTID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RCOCFV-MKMZL, sy-vline,
  WA_RCOCFV-ATINN, sy-vline,
  WA_RCOCFV-ATWRT, sy-vline,
  WA_RCOCFV-ATFLV, sy-vline,
  WA_RCOCFV-ATFOR, sy-vline,
  WA_RCOCFV-FVLNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RCOCFV 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_RCOCFV 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_RCOCFV INTO WA_RCOCFV.


*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 BID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RCOCFV-BID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCOCFV-BID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ATINN, internal->external for field ATINN
CALL FUNCTION 'CONVERSION_EXIT_ATINN_OUTPUT'
  EXPORTING
    input =                      WA_RCOCFV-ATINN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCOCFV-ATINN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field FVLNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_RCOCFV-FVLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCOCFV-FVLNR.
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_RCOCFV_STR, 
MANDT TYPE STRING,
BID TYPE STRING,
OPID TYPE STRING,
PHID TYPE STRING,
FTID TYPE STRING,
MKMZL TYPE STRING,
ATINN TYPE STRING,
ATWRT TYPE STRING,
ATFLV TYPE STRING,
ATFOR TYPE STRING,
FVLNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RCOCFV_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_RCOCFV_STR-MANDT sy-vline 
WA_RCOCFV_STR-BID sy-vline 
WA_RCOCFV_STR-OPID sy-vline 
WA_RCOCFV_STR-PHID sy-vline 
WA_RCOCFV_STR-FTID sy-vline 
WA_RCOCFV_STR-MKMZL sy-vline 
WA_RCOCFV_STR-ATINN sy-vline 
WA_RCOCFV_STR-ATWRT sy-vline 
WA_RCOCFV_STR-ATFLV sy-vline 
WA_RCOCFV_STR-ATFOR sy-vline 
WA_RCOCFV_STR-FVLNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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