ABAP Select data from SAP table RCGSUBCOPY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RCGSUBCOPY
*  INTO TABLE @DATA(IT_RCGSUBCOPY2).
*--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_RCGSUBCOPY INDEX 1 INTO DATA(WA_RCGSUBCOPY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RCGSUBCOPY>-TMPLSUB = 1.
<RCGSUBCOPY>-FLGCPAL = 1.
<RCGSUBCOPY>-FLGCPRH = 1.
<RCGSUBCOPY>-FLGCPRR = 1.
<RCGSUBCOPY>-FLGCPRI = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RCGSUBCOPY-FLGCPMJ, sy-vline,
  WA_RCGSUBCOPY-FLGCPVH, sy-vline,
  WA_RCGSUBCOPY-FLGCPDF, sy-vline,
  WA_RCGSUBCOPY-FLGCPDR, sy-vline,
  WA_RCGSUBCOPY-FLGCPDS, sy-vline,
  WA_RCGSUBCOPY-FLGCPDU, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RCGSUBCOPY 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_RCGSUBCOPY 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_RCGSUBCOPY INTO WA_RCGSUBCOPY.


*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 SPEC1, internal->external for field TMPLSUB
CALL FUNCTION 'CONVERSION_EXIT_SPEC1_OUTPUT'
  EXPORTING
    input =                      WA_RCGSUBCOPY-TMPLSUB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCGSUBCOPY-TMPLSUB.
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_RCGSUBCOPY_STR, 
TMPLSUB TYPE STRING,
FLGCPAL TYPE STRING,
FLGCPRH TYPE STRING,
FLGCPRR TYPE STRING,
FLGCPRI TYPE STRING,
FLGCPMJ TYPE STRING,
FLGCPVH TYPE STRING,
FLGCPDF TYPE STRING,
FLGCPDR TYPE STRING,
FLGCPDS TYPE STRING,
FLGCPDU TYPE STRING,
BUTTON TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RCGSUBCOPY_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_RCGSUBCOPY_STR-TMPLSUB sy-vline 
WA_RCGSUBCOPY_STR-FLGCPAL sy-vline 
WA_RCGSUBCOPY_STR-FLGCPRH sy-vline 
WA_RCGSUBCOPY_STR-FLGCPRR sy-vline 
WA_RCGSUBCOPY_STR-FLGCPRI sy-vline 
WA_RCGSUBCOPY_STR-FLGCPMJ sy-vline 
WA_RCGSUBCOPY_STR-FLGCPVH sy-vline 
WA_RCGSUBCOPY_STR-FLGCPDF sy-vline 
WA_RCGSUBCOPY_STR-FLGCPDR sy-vline 
WA_RCGSUBCOPY_STR-FLGCPDS sy-vline 
WA_RCGSUBCOPY_STR-FLGCPDU sy-vline 
WA_RCGSUBCOPY_STR-BUTTON sy-vline      INTO ld_text SEPARATED BY SPACE.

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