ABAP Select data from SAP table AFVG_TAB_STRUC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM AFVG_TAB_STRUC
*  INTO TABLE @DATA(IT_AFVG_TAB_STRUC2).
*--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_AFVG_TAB_STRUC INDEX 1 INTO DATA(WA_AFVG_TAB_STRUC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<AFVG_TAB_STRUC>-AUFNR = 1.
<AFVG_TAB_STRUC>-PLNFL = 1.
<AFVG_TAB_STRUC>-SUMNR = 1.
<AFVG_TAB_STRUC>-VORNR = 1.
<AFVG_TAB_STRUC>-UVORN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_AFVG_TAB_STRUC-MANDT, sy-vline,
  WA_AFVG_TAB_STRUC-AUFPL, sy-vline,
  WA_AFVG_TAB_STRUC-APLZL, sy-vline,
  WA_AFVG_TAB_STRUC-INDEX, sy-vline,
  WA_AFVG_TAB_STRUC-FUNKTION1, sy-vline,
  WA_AFVG_TAB_STRUC-FUNKTION2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_AFVG_TAB_STRUC 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_AFVG_TAB_STRUC 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_AFVG_TAB_STRUC INTO WA_AFVG_TAB_STRUC.


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

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

*Conversion exit NUMCV, internal->external for field VORNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_AFVG_TAB_STRUC-VORNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AFVG_TAB_STRUC-VORNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field UVORN
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_AFVG_TAB_STRUC-UVORN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AFVG_TAB_STRUC-UVORN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VGE01
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_AFVG_TAB_STRUC-VGE01
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AFVG_TAB_STRUC-VGE01.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VGE02
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_AFVG_TAB_STRUC-VGE02
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AFVG_TAB_STRUC-VGE02.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VGE03
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_AFVG_TAB_STRUC-VGE03
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AFVG_TAB_STRUC-VGE03.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VGE04
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_AFVG_TAB_STRUC-VGE04
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AFVG_TAB_STRUC-VGE04.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VGE05
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_AFVG_TAB_STRUC-VGE05
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AFVG_TAB_STRUC-VGE05.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VGE06
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_AFVG_TAB_STRUC-VGE06
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AFVG_TAB_STRUC-VGE06.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field ARBEH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_AFVG_TAB_STRUC-ARBEH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AFVG_TAB_STRUC-ARBEH.
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_AFVG_TAB_STRUC_STR, 
AUFNR TYPE STRING,
PLNFL TYPE STRING,
SUMNR TYPE STRING,
VORNR TYPE STRING,
UVORN TYPE STRING,
MANDT TYPE STRING,
AUFPL TYPE STRING,
APLZL TYPE STRING,
INDEX TYPE STRING,
FUNKTION1 TYPE STRING,
FUNKTION2 TYPE STRING,
FUNKTION3 TYPE STRING,
FUNKTION4 TYPE STRING,
ARBID TYPE STRING,
DESTGRUPPE TYPE STRING,
DESTKOMBI TYPE STRING,
EPANF TYPE STRING,
EPANZ TYPE STRING,
EPEND TYPE STRING,
EPENZ TYPE STRING,
VGW01 TYPE STRING,
VGE01 TYPE STRING,
VGW02 TYPE STRING,
VGE02 TYPE STRING,
VGW03 TYPE STRING,
VGE03 TYPE STRING,
VGW04 TYPE STRING,
VGE04 TYPE STRING,
VGW05 TYPE STRING,
VGE05 TYPE STRING,
VGW06 TYPE STRING,
VGE06 TYPE STRING,
DAUNE TYPE STRING,
DAUNO TYPE STRING,
ARBEH TYPE STRING,
ARBEI TYPE STRING,
VGW_VALID TYPE STRING,
CY_SEQNRV TYPE STRING,
SEQ_VALID TYPE STRING,
SORT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_AFVG_TAB_STRUC_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_AFVG_TAB_STRUC_STR-AUFNR sy-vline 
WA_AFVG_TAB_STRUC_STR-PLNFL sy-vline 
WA_AFVG_TAB_STRUC_STR-SUMNR sy-vline 
WA_AFVG_TAB_STRUC_STR-VORNR sy-vline 
WA_AFVG_TAB_STRUC_STR-UVORN sy-vline 
WA_AFVG_TAB_STRUC_STR-MANDT sy-vline 
WA_AFVG_TAB_STRUC_STR-AUFPL sy-vline 
WA_AFVG_TAB_STRUC_STR-APLZL sy-vline 
WA_AFVG_TAB_STRUC_STR-INDEX sy-vline 
WA_AFVG_TAB_STRUC_STR-FUNKTION1 sy-vline 
WA_AFVG_TAB_STRUC_STR-FUNKTION2 sy-vline 
WA_AFVG_TAB_STRUC_STR-FUNKTION3 sy-vline 
WA_AFVG_TAB_STRUC_STR-FUNKTION4 sy-vline 
WA_AFVG_TAB_STRUC_STR-ARBID sy-vline 
WA_AFVG_TAB_STRUC_STR-DESTGRUPPE sy-vline 
WA_AFVG_TAB_STRUC_STR-DESTKOMBI sy-vline 
WA_AFVG_TAB_STRUC_STR-EPANF sy-vline 
WA_AFVG_TAB_STRUC_STR-EPANZ sy-vline 
WA_AFVG_TAB_STRUC_STR-EPEND sy-vline 
WA_AFVG_TAB_STRUC_STR-EPENZ sy-vline 
WA_AFVG_TAB_STRUC_STR-VGW01 sy-vline 
WA_AFVG_TAB_STRUC_STR-VGE01 sy-vline 
WA_AFVG_TAB_STRUC_STR-VGW02 sy-vline 
WA_AFVG_TAB_STRUC_STR-VGE02 sy-vline 
WA_AFVG_TAB_STRUC_STR-VGW03 sy-vline 
WA_AFVG_TAB_STRUC_STR-VGE03 sy-vline 
WA_AFVG_TAB_STRUC_STR-VGW04 sy-vline 
WA_AFVG_TAB_STRUC_STR-VGE04 sy-vline 
WA_AFVG_TAB_STRUC_STR-VGW05 sy-vline 
WA_AFVG_TAB_STRUC_STR-VGE05 sy-vline 
WA_AFVG_TAB_STRUC_STR-VGW06 sy-vline 
WA_AFVG_TAB_STRUC_STR-VGE06 sy-vline 
WA_AFVG_TAB_STRUC_STR-DAUNE sy-vline 
WA_AFVG_TAB_STRUC_STR-DAUNO sy-vline 
WA_AFVG_TAB_STRUC_STR-ARBEH sy-vline 
WA_AFVG_TAB_STRUC_STR-ARBEI sy-vline 
WA_AFVG_TAB_STRUC_STR-VGW_VALID sy-vline 
WA_AFVG_TAB_STRUC_STR-CY_SEQNRV sy-vline 
WA_AFVG_TAB_STRUC_STR-SEQ_VALID sy-vline 
WA_AFVG_TAB_STRUC_STR-SORT sy-vline      INTO ld_text SEPARATED BY SPACE.

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