ABAP Select data from SAP table RFVGR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RFVGR
*  INTO TABLE @DATA(IT_RFVGR2).
*--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_RFVGR INDEX 1 INTO DATA(WA_RFVGR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RFVGR>-BUKRS = 1.
<RFVGR>-SWENR = 1.
<RFVGR>-SGENR = 1.
<RFVGR>-SRAUMEXT = 1.
<RFVGR>-INTRENO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RFVGR-BUTXT, sy-vline,
  WA_RFVGR-XWETEXT, sy-vline,
  WA_RFVGR-XGETXT, sy-vline,
  WA_RFVGR-ADRNR, sy-vline,
  WA_RFVGR-SMENR, sy-vline,
  WA_RFVGR-TFEINHT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RFVGR 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_RFVGR 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_RFVGR INTO WA_RFVGR.


*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 SWENR, internal->external for field SWENR
CALL FUNCTION 'CONVERSION_EXIT_SWENR_OUTPUT'
  EXPORTING
    input =                      WA_RFVGR-SWENR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFVGR-SWENR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit CUNIT, internal->external for field TFEINHT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RFVGR-TFEINHT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFVGR-TFEINHT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VVLEN
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RFVGR-VVLEN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFVGR-VVLEN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field FEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RFVGR-FEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFVGR-FEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field REINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RFVGR-REINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFVGR-REINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SGENR, internal->external for field NEWSGENR
CALL FUNCTION 'CONVERSION_EXIT_SGENR_OUTPUT'
  EXPORTING
    input =                      WA_RFVGR-NEWSGENR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFVGR-NEWSGENR.
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_RFVGR_STR, 
BUKRS TYPE STRING,
SWENR TYPE STRING,
SGENR TYPE STRING,
SRAUMEXT TYPE STRING,
INTRENO TYPE STRING,
BUTXT TYPE STRING,
XWETEXT TYPE STRING,
XGETXT TYPE STRING,
ADRNR TYPE STRING,
SMENR TYPE STRING,
TFEINHT TYPE STRING,
XTFEINHT TYPE STRING,
VVLEN TYPE STRING,
XVVLEN TYPE STRING,
FEINS TYPE STRING,
XFEINS TYPE STRING,
REINS TYPE STRING,
XREINS TYPE STRING,
XSTRASSE TYPE STRING,
XPLZ TYPE STRING,
XORT TYPE STRING,
XADRESSE TYPE STRING,
SRAZO_INTRENO TYPE STRING,
SRAZO TYPE STRING,
RGEMRAU TYPE STRING,
SRAART TYPE STRING,
XRAARTL TYPE STRING,
XRAARTK TYPE STRING,
FLTGNR TYPE STRING,
FLOT TYPE STRING,
FLOTTXT TYPE STRING,
DSTICH TYPE STRING,
DANZGUELAB TYPE STRING,
DANZGUELBIS TYPE STRING,
XGEBM TYPE STRING,
XSTOCKL TYPE STRING,
NEWGUELAB TYPE STRING,
NEWGUELBIS TYPE STRING,
NEWSRAUMEXT TYPE STRING,
NEWSGENR TYPE STRING,
WAERS TYPE STRING,
HISTOPT TYPE STRING,
DOMTXT01 TYPE STRING,
DOMTXT02 TYPE STRING,
DOMTXT03 TYPE STRING,
DOMTXT04 TYPE STRING,
DOMTXT05 TYPE STRING,
ANYDATUM TYPE STRING,
FLG_EXCL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RFVGR_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_RFVGR_STR-BUKRS sy-vline 
WA_RFVGR_STR-SWENR sy-vline 
WA_RFVGR_STR-SGENR sy-vline 
WA_RFVGR_STR-SRAUMEXT sy-vline 
WA_RFVGR_STR-INTRENO sy-vline 
WA_RFVGR_STR-BUTXT sy-vline 
WA_RFVGR_STR-XWETEXT sy-vline 
WA_RFVGR_STR-XGETXT sy-vline 
WA_RFVGR_STR-ADRNR sy-vline 
WA_RFVGR_STR-SMENR sy-vline 
WA_RFVGR_STR-TFEINHT sy-vline 
WA_RFVGR_STR-XTFEINHT sy-vline 
WA_RFVGR_STR-VVLEN sy-vline 
WA_RFVGR_STR-XVVLEN sy-vline 
WA_RFVGR_STR-FEINS sy-vline 
WA_RFVGR_STR-XFEINS sy-vline 
WA_RFVGR_STR-REINS sy-vline 
WA_RFVGR_STR-XREINS sy-vline 
WA_RFVGR_STR-XSTRASSE sy-vline 
WA_RFVGR_STR-XPLZ sy-vline 
WA_RFVGR_STR-XORT sy-vline 
WA_RFVGR_STR-XADRESSE sy-vline 
WA_RFVGR_STR-SRAZO_INTRENO sy-vline 
WA_RFVGR_STR-SRAZO sy-vline 
WA_RFVGR_STR-RGEMRAU sy-vline 
WA_RFVGR_STR-SRAART sy-vline 
WA_RFVGR_STR-XRAARTL sy-vline 
WA_RFVGR_STR-XRAARTK sy-vline 
WA_RFVGR_STR-FLTGNR sy-vline 
WA_RFVGR_STR-FLOT sy-vline 
WA_RFVGR_STR-FLOTTXT sy-vline 
WA_RFVGR_STR-DSTICH sy-vline 
WA_RFVGR_STR-DANZGUELAB sy-vline 
WA_RFVGR_STR-DANZGUELBIS sy-vline 
WA_RFVGR_STR-XGEBM sy-vline 
WA_RFVGR_STR-XSTOCKL sy-vline 
WA_RFVGR_STR-NEWGUELAB sy-vline 
WA_RFVGR_STR-NEWGUELBIS sy-vline 
WA_RFVGR_STR-NEWSRAUMEXT sy-vline 
WA_RFVGR_STR-NEWSGENR sy-vline 
WA_RFVGR_STR-WAERS sy-vline 
WA_RFVGR_STR-HISTOPT sy-vline 
WA_RFVGR_STR-DOMTXT01 sy-vline 
WA_RFVGR_STR-DOMTXT02 sy-vline 
WA_RFVGR_STR-DOMTXT03 sy-vline 
WA_RFVGR_STR-DOMTXT04 sy-vline 
WA_RFVGR_STR-DOMTXT05 sy-vline 
WA_RFVGR_STR-ANYDATUM sy-vline 
WA_RFVGR_STR-FLG_EXCL sy-vline      INTO ld_text SEPARATED BY SPACE.

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