ABAP Select data from SAP table RF10G into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RF10G 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 RF10G. 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 RF10G 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_RF10G TYPE STANDARD TABLE OF RF10G,
      WA_RF10G TYPE RF10G,
      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: <RF10G> TYPE RF10G.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RF10G.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RF10G
  INTO TABLE IT_RF10G.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RF10G
*  INTO TABLE @DATA(IT_RF10G2).
*--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_RF10G INDEX 1 INTO DATA(WA_RF10G2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RF10G ASSIGNING <RF10G>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RF10G>-RCOMP = 1.
<RF10G>-RYEAR = 1.
<RF10G>-PERID = 1.
<RF10G>-RLDNR = 1.
<RF10G>-RVERS = 1.

ENDLOOP.

LOOP AT IT_RF10G INTO WA_RF10G.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RF10G-REFRC, sy-vline,
  WA_RF10G-WK_REF, sy-vline,
  WA_RF10G-SORT1, sy-vline,
  WA_RF10G-SORT2, sy-vline,
  WA_RF10G-SORT3, sy-vline,
  WA_RF10G-AUST1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RF10G 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_RF10G 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_RF10G INTO WA_RF10G.


*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 RCOMP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RF10G-RCOMP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RF10G-RCOMP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field RYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_RF10G-RYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RF10G-RYEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RLDNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RF10G-RLDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RF10G-RLDNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RVERS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RF10G-RVERS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RF10G-RVERS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REFRC
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RF10G-REFRC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RF10G-REFRC.
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_RF10G_STR, 
RCOMP TYPE STRING,
RYEAR TYPE STRING,
PERID TYPE STRING,
RLDNR TYPE STRING,
RVERS TYPE STRING,
REFRC TYPE STRING,
WK_REF TYPE STRING,
SORT1 TYPE STRING,
SORT2 TYPE STRING,
SORT3 TYPE STRING,
AUST1 TYPE STRING,
AUST2 TYPE STRING,
AUST3 TYPE STRING,
NAME1 TYPE STRING,
REASN TYPE STRING,
FK_NE TYPE STRING,
CURR TYPE STRING,
UPLD1 TYPE STRING,
UPLD2 TYPE STRING,
UPLD3 TYPE STRING,
UPLD4 TYPE STRING,
UPLD5 TYPE STRING,
IMPORT1 TYPE STRING,
IMPORT2 TYPE STRING,
IMPORT3 TYPE STRING,
IMPORT4 TYPE STRING,
IMPORT5 TYPE STRING,
SNDID TYPE STRING,
PATH TYPE STRING,
FILEFORMAT TYPE STRING,
UPLMETH TYPE STRING,
UPLMETHTXT TYPE STRING,
CHDBASE TYPE STRING,
VALIDHB1 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RF10G_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_RF10G_STR-RCOMP sy-vline 
WA_RF10G_STR-RYEAR sy-vline 
WA_RF10G_STR-PERID sy-vline 
WA_RF10G_STR-RLDNR sy-vline 
WA_RF10G_STR-RVERS sy-vline 
WA_RF10G_STR-REFRC sy-vline 
WA_RF10G_STR-WK_REF sy-vline 
WA_RF10G_STR-SORT1 sy-vline 
WA_RF10G_STR-SORT2 sy-vline 
WA_RF10G_STR-SORT3 sy-vline 
WA_RF10G_STR-AUST1 sy-vline 
WA_RF10G_STR-AUST2 sy-vline 
WA_RF10G_STR-AUST3 sy-vline 
WA_RF10G_STR-NAME1 sy-vline 
WA_RF10G_STR-REASN sy-vline 
WA_RF10G_STR-FK_NE sy-vline 
WA_RF10G_STR-CURR sy-vline 
WA_RF10G_STR-UPLD1 sy-vline 
WA_RF10G_STR-UPLD2 sy-vline 
WA_RF10G_STR-UPLD3 sy-vline 
WA_RF10G_STR-UPLD4 sy-vline 
WA_RF10G_STR-UPLD5 sy-vline 
WA_RF10G_STR-IMPORT1 sy-vline 
WA_RF10G_STR-IMPORT2 sy-vline 
WA_RF10G_STR-IMPORT3 sy-vline 
WA_RF10G_STR-IMPORT4 sy-vline 
WA_RF10G_STR-IMPORT5 sy-vline 
WA_RF10G_STR-SNDID sy-vline 
WA_RF10G_STR-PATH sy-vline 
WA_RF10G_STR-FILEFORMAT sy-vline 
WA_RF10G_STR-UPLMETH sy-vline 
WA_RF10G_STR-UPLMETHTXT sy-vline 
WA_RF10G_STR-CHDBASE sy-vline 
WA_RF10G_STR-VALIDHB1 sy-vline      INTO ld_text SEPARATED BY SPACE.

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