ABAP Select data from SAP table VIWB41 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP VIWB41 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 VIWB41. 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 VIWB41 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_VIWB41 TYPE STANDARD TABLE OF VIWB41,
      WA_VIWB41 TYPE VIWB41,
      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: <VIWB41> TYPE VIWB41.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_VIWB41.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM VIWB41
  INTO TABLE IT_VIWB41.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VIWB41
*  INTO TABLE @DATA(IT_VIWB412).
*--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_VIWB41 INDEX 1 INTO DATA(WA_VIWB412).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_VIWB41 ASSIGNING <VIWB41>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VIWB41>-MANDT = 1.
<VIWB41>-SWBNR = 1.
<VIWB41>-SWBIND = 1.
<VIWB41>-ZUDAT = 1.
<VIWB41>-FIART = 1.

ENDLOOP.

LOOP AT IT_VIWB41 INTO WA_VIWB41.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VIWB41-LFD_NR, sy-vline,
  WA_VIWB41-RGUEBIS, sy-vline,
  WA_VIWB41-FIKZ, sy-vline,
  WA_VIWB41-DGEBER, sy-vline,
  WA_VIWB41-BETRAG, sy-vline,
  WA_VIWB41-TILGUNG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VIWB41 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_VIWB41 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_VIWB41 INTO WA_VIWB41.


*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 FIART
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VIWB41-FIART
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VIWB41-FIART.
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_VIWB41_STR, 
MANDT TYPE STRING,
SWBNR TYPE STRING,
SWBIND TYPE STRING,
ZUDAT TYPE STRING,
FIART TYPE STRING,
LFD_NR TYPE STRING,
RGUEBIS TYPE STRING,
FIKZ TYPE STRING,
DGEBER TYPE STRING,
BETRAG TYPE STRING,
TILGUNG TYPE STRING,
AUFWSTAT TYPE STRING,
ENDEKZ TYPE STRING,
ZINS TYPE STRING,
JBETRAG TYPE STRING,
RMBETRAG TYPE STRING,
MBETRAG_PRO_EINH TYPE STRING,
MAW TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VIWB41_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_VIWB41_STR-MANDT sy-vline 
WA_VIWB41_STR-SWBNR sy-vline 
WA_VIWB41_STR-SWBIND sy-vline 
WA_VIWB41_STR-ZUDAT sy-vline 
WA_VIWB41_STR-FIART sy-vline 
WA_VIWB41_STR-LFD_NR sy-vline 
WA_VIWB41_STR-RGUEBIS sy-vline 
WA_VIWB41_STR-FIKZ sy-vline 
WA_VIWB41_STR-DGEBER sy-vline 
WA_VIWB41_STR-BETRAG sy-vline 
WA_VIWB41_STR-TILGUNG sy-vline 
WA_VIWB41_STR-AUFWSTAT sy-vline 
WA_VIWB41_STR-ENDEKZ sy-vline 
WA_VIWB41_STR-ZINS sy-vline 
WA_VIWB41_STR-JBETRAG sy-vline 
WA_VIWB41_STR-RMBETRAG sy-vline 
WA_VIWB41_STR-MBETRAG_PRO_EINH sy-vline 
WA_VIWB41_STR-MAW sy-vline      INTO ld_text SEPARATED BY SPACE.

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