ABAP Select data from SAP table AFVGE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM AFVGE
*  INTO TABLE @DATA(IT_AFVGE2).
*--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_AFVGE INDEX 1 INTO DATA(WA_AFVGE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<AFVGE>-AUFPL = 1.
<AFVGE>-APLZL = 1.
<AFVGE>-VORNR = 1.
<AFVGE>-STEUS = 1.
<AFVGE>-LTXA1 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_AFVGE-INDEX, sy-vline,
  WA_AFVGE-AUFNR_T, sy-vline,
  WA_AFVGE-SEQTYPE, sy-vline,
  WA_AFVGE-FSAVD, sy-vline,
  WA_AFVGE-PUFFR, sy-vline,
  WA_AFVGE-FSEDD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_AFVGE 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_AFVGE 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_AFVGE INTO WA_AFVGE.


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

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

*Conversion exit CUNIT, internal->external for field DAUNE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_AFVGE-DAUNE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AFVGE-DAUNE.
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_AFVGE_STR, 
AUFPL TYPE STRING,
APLZL TYPE STRING,
VORNR TYPE STRING,
STEUS TYPE STRING,
LTXA1 TYPE STRING,
INDEX TYPE STRING,
AUFNR_T TYPE STRING,
SEQTYPE TYPE STRING,
FSAVD TYPE STRING,
PUFFR TYPE STRING,
FSEDD TYPE STRING,
SSAVD TYPE STRING,
PUFGS TYPE STRING,
SSEDD TYPE STRING,
DAUNO TYPE STRING,
DAUNE TYPE STRING,
GRAF_TYP TYPE STRING,
VBKZ TYPE STRING,
OBJNR TYPE STRING,
PUFGP TYPE STRING,
FPAVD TYPE STRING,
FPEDD TYPE STRING,
SPAVD TYPE STRING,
SPEDD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_AFVGE_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_AFVGE_STR-AUFPL sy-vline 
WA_AFVGE_STR-APLZL sy-vline 
WA_AFVGE_STR-VORNR sy-vline 
WA_AFVGE_STR-STEUS sy-vline 
WA_AFVGE_STR-LTXA1 sy-vline 
WA_AFVGE_STR-INDEX sy-vline 
WA_AFVGE_STR-AUFNR_T sy-vline 
WA_AFVGE_STR-SEQTYPE sy-vline 
WA_AFVGE_STR-FSAVD sy-vline 
WA_AFVGE_STR-PUFFR sy-vline 
WA_AFVGE_STR-FSEDD sy-vline 
WA_AFVGE_STR-SSAVD sy-vline 
WA_AFVGE_STR-PUFGS sy-vline 
WA_AFVGE_STR-SSEDD sy-vline 
WA_AFVGE_STR-DAUNO sy-vline 
WA_AFVGE_STR-DAUNE sy-vline 
WA_AFVGE_STR-GRAF_TYP sy-vline 
WA_AFVGE_STR-VBKZ sy-vline 
WA_AFVGE_STR-OBJNR sy-vline 
WA_AFVGE_STR-PUFGP sy-vline 
WA_AFVGE_STR-FPAVD sy-vline 
WA_AFVGE_STR-FPEDD sy-vline 
WA_AFVGE_STR-SPAVD sy-vline 
WA_AFVGE_STR-SPEDD sy-vline      INTO ld_text SEPARATED BY SPACE.

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