ABAP Select data from SAP table VFKGRP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VFKGRP
*  INTO TABLE @DATA(IT_VFKGRP2).
*--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_VFKGRP INDEX 1 INTO DATA(WA_VFKGRP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VFKGRP>-MANDT = 1.
<VFKGRP>-GRP_HDL = 1.
<VFKGRP>-KSCHL = 1.
<VFKGRP>-VALUE_SV = 1.
<VFKGRP>-VALUE_SB = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VFKGRP-VALUE_VA, sy-vline,
  WA_VFKGRP-VALUE_VC, sy-vline,
  WA_VFKGRP-VALUE_CV, sy-vline,
  WA_VFKGRP-VALUE_CB, sy-vline,
  WA_VFKGRP-VALUE_CO, sy-vline,
  WA_VFKGRP-KNUMH, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VFKGRP 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_VFKGRP 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_VFKGRP INTO WA_VFKGRP.


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

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

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

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

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

*Conversion exit CUNIT, internal->external for field CVUOF
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_VFKGRP-CVUOF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VFKGRP-CVUOF.
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_VFKGRP_STR, 
MANDT TYPE STRING,
GRP_HDL TYPE STRING,
KSCHL TYPE STRING,
VALUE_SV TYPE STRING,
VALUE_SB TYPE STRING,
VALUE_VA TYPE STRING,
VALUE_VC TYPE STRING,
VALUE_CV TYPE STRING,
VALUE_CB TYPE STRING,
VALUE_CO TYPE STRING,
KNUMH TYPE STRING,
KOPOS TYPE STRING,
SCAID TYPE STRING,
KRECH TYPE STRING,
KPEIN TYPE STRING,
LPEIN TYPE STRING,
KMEIN TYPE STRING,
CCBVRR TYPE STRING,
CTBVRR TYPE STRING,
KONMS TYPE STRING,
SCABAS TYPE STRING,
SCATYP TYPE STRING,
SCBVRR TYPE STRING,
SLFNR TYPE STRING,
CATYP TYPE STRING,
SLFNR_LC TYPE STRING,
CATYP_LC TYPE STRING,
KAPPL TYPE STRING,
VFSCBF TYPE STRING,
VFCTYF TYPE STRING,
BRWCL TYPE STRING,
GRMEN TYPE STRING,
SVUOF TYPE STRING,
CVUOF TYPE STRING,
BUGRP TYPE STRING,
MGKUM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VFKGRP_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_VFKGRP_STR-MANDT sy-vline 
WA_VFKGRP_STR-GRP_HDL sy-vline 
WA_VFKGRP_STR-KSCHL sy-vline 
WA_VFKGRP_STR-VALUE_SV sy-vline 
WA_VFKGRP_STR-VALUE_SB sy-vline 
WA_VFKGRP_STR-VALUE_VA sy-vline 
WA_VFKGRP_STR-VALUE_VC sy-vline 
WA_VFKGRP_STR-VALUE_CV sy-vline 
WA_VFKGRP_STR-VALUE_CB sy-vline 
WA_VFKGRP_STR-VALUE_CO sy-vline 
WA_VFKGRP_STR-KNUMH sy-vline 
WA_VFKGRP_STR-KOPOS sy-vline 
WA_VFKGRP_STR-SCAID sy-vline 
WA_VFKGRP_STR-KRECH sy-vline 
WA_VFKGRP_STR-KPEIN sy-vline 
WA_VFKGRP_STR-LPEIN sy-vline 
WA_VFKGRP_STR-KMEIN sy-vline 
WA_VFKGRP_STR-CCBVRR sy-vline 
WA_VFKGRP_STR-CTBVRR sy-vline 
WA_VFKGRP_STR-KONMS sy-vline 
WA_VFKGRP_STR-SCABAS sy-vline 
WA_VFKGRP_STR-SCATYP sy-vline 
WA_VFKGRP_STR-SCBVRR sy-vline 
WA_VFKGRP_STR-SLFNR sy-vline 
WA_VFKGRP_STR-CATYP sy-vline 
WA_VFKGRP_STR-SLFNR_LC sy-vline 
WA_VFKGRP_STR-CATYP_LC sy-vline 
WA_VFKGRP_STR-KAPPL sy-vline 
WA_VFKGRP_STR-VFSCBF sy-vline 
WA_VFKGRP_STR-VFCTYF sy-vline 
WA_VFKGRP_STR-BRWCL sy-vline 
WA_VFKGRP_STR-GRMEN sy-vline 
WA_VFKGRP_STR-SVUOF sy-vline 
WA_VFKGRP_STR-CVUOF sy-vline 
WA_VFKGRP_STR-BUGRP sy-vline 
WA_VFKGRP_STR-MGKUM sy-vline      INTO ld_text SEPARATED BY SPACE.

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