ABAP Select data from SAP table VIGWFLBW into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VIGWFLBW
*  INTO TABLE @DATA(IT_VIGWFLBW2).
*--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_VIGWFLBW INDEX 1 INTO DATA(WA_VIGWFLBW2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VIGWFLBW>-MANDT = 1.
<VIGWFLBW>-INTRENO = 1.
<VIGWFLBW>-FLAG = 1.
<VIGWFLBW>-SKOART = 1.
<VIGWFLBW>-DGUELBIS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VIGWFLBW-VERSION, sy-vline,
  WA_VIGWFLBW-DGUELAB, sy-vline,
  WA_VIGWFLBW-JKOPAUSCH, sy-vline,
  WA_VIGWFLBW-WHRMKLBW, sy-vline,
  WA_VIGWFLBW-MWMARKT, sy-vline,
  WA_VIGWFLBW-JERBTMW, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VIGWFLBW 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_VIGWFLBW 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_VIGWFLBW INTO WA_VIGWFLBW.


*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_VIGWFLBW_STR, 
MANDT TYPE STRING,
INTRENO TYPE STRING,
FLAG TYPE STRING,
SKOART TYPE STRING,
DGUELBIS TYPE STRING,
VERSION TYPE STRING,
DGUELAB TYPE STRING,
JKOPAUSCH TYPE STRING,
WHRMKLBW TYPE STRING,
MWMARKT TYPE STRING,
JERBTMW TYPE STRING,
MWKOSTN TYPE STRING,
JERBTKW TYPE STRING,
MWLEERS TYPE STRING,
JERBTLW TYPE STRING,
MWISTMV TYPE STRING,
WHRISTMV TYPE STRING,
MV_HIST TYPE STRING,
DERIVED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VIGWFLBW_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_VIGWFLBW_STR-MANDT sy-vline 
WA_VIGWFLBW_STR-INTRENO sy-vline 
WA_VIGWFLBW_STR-FLAG sy-vline 
WA_VIGWFLBW_STR-SKOART sy-vline 
WA_VIGWFLBW_STR-DGUELBIS sy-vline 
WA_VIGWFLBW_STR-VERSION sy-vline 
WA_VIGWFLBW_STR-DGUELAB sy-vline 
WA_VIGWFLBW_STR-JKOPAUSCH sy-vline 
WA_VIGWFLBW_STR-WHRMKLBW sy-vline 
WA_VIGWFLBW_STR-MWMARKT sy-vline 
WA_VIGWFLBW_STR-JERBTMW sy-vline 
WA_VIGWFLBW_STR-MWKOSTN sy-vline 
WA_VIGWFLBW_STR-JERBTKW sy-vline 
WA_VIGWFLBW_STR-MWLEERS sy-vline 
WA_VIGWFLBW_STR-JERBTLW sy-vline 
WA_VIGWFLBW_STR-MWISTMV sy-vline 
WA_VIGWFLBW_STR-WHRISTMV sy-vline 
WA_VIGWFLBW_STR-MV_HIST sy-vline 
WA_VIGWFLBW_STR-DERIVED sy-vline      INTO ld_text SEPARATED BY SPACE.

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