ABAP Select data from SAP table FVG0_EVENTS into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FVG0_EVENTS 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 FVG0_EVENTS. 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 FVG0_EVENTS 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_FVG0_EVENTS TYPE STANDARD TABLE OF FVG0_EVENTS,
      WA_FVG0_EVENTS TYPE FVG0_EVENTS,
      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: <FVG0_EVENTS> TYPE FVG0_EVENTS.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_FVG0_EVENTS.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM FVG0_EVENTS
  INTO TABLE IT_FVG0_EVENTS.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FVG0_EVENTS
*  INTO TABLE @DATA(IT_FVG0_EVENTS2).
*--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_FVG0_EVENTS INDEX 1 INTO DATA(WA_FVG0_EVENTS2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_FVG0_EVENTS ASSIGNING <FVG0_EVENTS>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FVG0_EVENTS>-XVIOB01 = 1.
<FVG0_EVENTS>-XVIOB02 = 1.
<FVG0_EVENTS>-XVIOB03 = 1.
<FVG0_EVENTS>-XVIMI01 = 1.
<FVG0_EVENTS>-XVIMIMV = 1.

ENDLOOP.

LOOP AT IT_FVG0_EVENTS INTO WA_FVG0_EVENTS.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FVG0_EVENTS-XFLOBJ, sy-vline,
  WA_FVG0_EVENTS-XFLAT, sy-vline,
  WA_FVG0_EVENTS-XFLBW, sy-vline,
  WA_FVG0_EVENTS-XOBMAZ, sy-vline,
  WA_FVG0_EVENTS-XFLKG, sy-vline,
  WA_FVG0_EVENTS-XRAOBJ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FVG0_EVENTS 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_FVG0_EVENTS 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_FVG0_EVENTS INTO WA_FVG0_EVENTS.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_FVG0_EVENTS_STR, 
XVIOB01 TYPE STRING,
XVIOB02 TYPE STRING,
XVIOB03 TYPE STRING,
XVIMI01 TYPE STRING,
XVIMIMV TYPE STRING,
XFLOBJ TYPE STRING,
XFLAT TYPE STRING,
XFLBW TYPE STRING,
XOBMAZ TYPE STRING,
XFLKG TYPE STRING,
XRAOBJ TYPE STRING,
XADR TYPE STRING,
XGPART TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FVG0_EVENTS_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_FVG0_EVENTS_STR-XVIOB01 sy-vline 
WA_FVG0_EVENTS_STR-XVIOB02 sy-vline 
WA_FVG0_EVENTS_STR-XVIOB03 sy-vline 
WA_FVG0_EVENTS_STR-XVIMI01 sy-vline 
WA_FVG0_EVENTS_STR-XVIMIMV sy-vline 
WA_FVG0_EVENTS_STR-XFLOBJ sy-vline 
WA_FVG0_EVENTS_STR-XFLAT sy-vline 
WA_FVG0_EVENTS_STR-XFLBW sy-vline 
WA_FVG0_EVENTS_STR-XOBMAZ sy-vline 
WA_FVG0_EVENTS_STR-XFLKG sy-vline 
WA_FVG0_EVENTS_STR-XRAOBJ sy-vline 
WA_FVG0_EVENTS_STR-XADR sy-vline 
WA_FVG0_EVENTS_STR-XGPART sy-vline      INTO ld_text SEPARATED BY SPACE.

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