ABAP Select data from SAP table VIGW_R_FL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VIGW_R_FL
*  INTO TABLE @DATA(IT_VIGW_R_FL2).
*--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_VIGW_R_FL INDEX 1 INTO DATA(WA_VIGW_R_FL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VIGW_R_FL>-OBJNR = 1.
<VIGW_R_FL>-IMKEY = 1.
<VIGW_R_FL>-JLOESCH = 1.
<VIGW_R_FL>-FLAA = 1.
<VIGW_R_FL>-DTRAGFKT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VIGW_R_FL-TFEINHT, sy-vline,
  WA_VIGW_R_FL-DRAUMHOE, sy-vline,
  WA_VIGW_R_FL-RHEINHT, sy-vline,
  WA_VIGW_R_FL-UMBRAUM, sy-vline,
  WA_VIGW_R_FL-REINHT, sy-vline,
  WA_VIGW_R_FL-RAAA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VIGW_R_FL 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_VIGW_R_FL 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_VIGW_R_FL INTO WA_VIGW_R_FL.


*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 IMKEY, internal->external for field IMKEY
CALL FUNCTION 'CONVERSION_EXIT_IMKEY_OUTPUT'
  EXPORTING
    input =                      WA_VIGW_R_FL-IMKEY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VIGW_R_FL-IMKEY.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit CUNIT, internal->external for field FEINH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_VIGW_R_FL-FEINH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VIGW_R_FL-FEINH.
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_VIGW_R_FL_STR, 
OBJNR TYPE STRING,
IMKEY TYPE STRING,
JLOESCH TYPE STRING,
FLAA TYPE STRING,
DTRAGFKT TYPE STRING,
TFEINHT TYPE STRING,
DRAUMHOE TYPE STRING,
RHEINHT TYPE STRING,
UMBRAUM TYPE STRING,
REINHT TYPE STRING,
RAAA TYPE STRING,
FLAG TYPE STRING,
FEINH TYPE STRING,
FLKGR TYPE STRING,
FLAGTXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VIGW_R_FL_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_VIGW_R_FL_STR-OBJNR sy-vline 
WA_VIGW_R_FL_STR-IMKEY sy-vline 
WA_VIGW_R_FL_STR-JLOESCH sy-vline 
WA_VIGW_R_FL_STR-FLAA sy-vline 
WA_VIGW_R_FL_STR-DTRAGFKT sy-vline 
WA_VIGW_R_FL_STR-TFEINHT sy-vline 
WA_VIGW_R_FL_STR-DRAUMHOE sy-vline 
WA_VIGW_R_FL_STR-RHEINHT sy-vline 
WA_VIGW_R_FL_STR-UMBRAUM sy-vline 
WA_VIGW_R_FL_STR-REINHT sy-vline 
WA_VIGW_R_FL_STR-RAAA sy-vline 
WA_VIGW_R_FL_STR-FLAG sy-vline 
WA_VIGW_R_FL_STR-FEINH sy-vline 
WA_VIGW_R_FL_STR-FLKGR sy-vline 
WA_VIGW_R_FL_STR-FLAGTXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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