ABAP Select data from SAP table VNWVIEW_L07_FORMS into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP VNWVIEW_L07_FORMS 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 VNWVIEW_L07_FORMS. 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 VNWVIEW_L07_FORMS 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_VNWVIEW_L07_FORMS TYPE STANDARD TABLE OF VNWVIEW_L07_FORMS,
      WA_VNWVIEW_L07_FORMS TYPE VNWVIEW_L07_FORMS,
      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: <VNWVIEW_L07_FORMS> TYPE VNWVIEW_L07_FORMS.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_VNWVIEW_L07_FORMS.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM VNWVIEW_L07_FORMS
  INTO TABLE IT_VNWVIEW_L07_FORMS.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VNWVIEW_L07_FORMS
*  INTO TABLE @DATA(IT_VNWVIEW_L07_FORMS2).
*--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_VNWVIEW_L07_FORMS INDEX 1 INTO DATA(WA_VNWVIEW_L07_FORMS2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_VNWVIEW_L07_FORMS ASSIGNING <VNWVIEW_L07_FORMS>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VNWVIEW_L07_FORMS>-MANDT = 1.
<VNWVIEW_L07_FORMS>-FALNR = 1.
<VNWVIEW_L07_FORMS>-VIEWTYPE = 1.
<VNWVIEW_L07_FORMS>-VIEWID = 1.
<VNWVIEW_L07_FORMS>-FORM_NAME = 1.

ENDLOOP.

LOOP AT IT_VNWVIEW_L07_FORMS INTO WA_VNWVIEW_L07_FORMS.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VNWVIEW_L07_FORMS-BELNR, sy-vline,
  WA_VNWVIEW_L07_FORMS-EINRI, sy-vline,
  WA_VNWVIEW_L07_FORMS-TEXT, sy-vline,
  WA_VNWVIEW_L07_FORMS-STORN, sy-vline,
  WA_VNWVIEW_L07_FORMS-ERDAT, sy-vline,
  WA_VNWVIEW_L07_FORMS-ERNAM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VNWVIEW_L07_FORMS 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_VNWVIEW_L07_FORMS 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_VNWVIEW_L07_FORMS INTO WA_VNWVIEW_L07_FORMS.


*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 FALNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VNWVIEW_L07_FORMS-FALNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VNWVIEW_L07_FORMS-FALNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EINRI
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VNWVIEW_L07_FORMS-EINRI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VNWVIEW_L07_FORMS-EINRI.
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_VNWVIEW_L07_FORMS_STR, 
MANDT TYPE STRING,
FALNR TYPE STRING,
VIEWTYPE TYPE STRING,
VIEWID TYPE STRING,
FORM_NAME TYPE STRING,
BELNR TYPE STRING,
EINRI TYPE STRING,
TEXT TYPE STRING,
STORN TYPE STRING,
ERDAT TYPE STRING,
ERNAM TYPE STRING,
UPDAT TYPE STRING,
UPNAM TYPE STRING,
KZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VNWVIEW_L07_FORMS_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_VNWVIEW_L07_FORMS_STR-MANDT sy-vline 
WA_VNWVIEW_L07_FORMS_STR-FALNR sy-vline 
WA_VNWVIEW_L07_FORMS_STR-VIEWTYPE sy-vline 
WA_VNWVIEW_L07_FORMS_STR-VIEWID sy-vline 
WA_VNWVIEW_L07_FORMS_STR-FORM_NAME sy-vline 
WA_VNWVIEW_L07_FORMS_STR-BELNR sy-vline 
WA_VNWVIEW_L07_FORMS_STR-EINRI sy-vline 
WA_VNWVIEW_L07_FORMS_STR-TEXT sy-vline 
WA_VNWVIEW_L07_FORMS_STR-STORN sy-vline 
WA_VNWVIEW_L07_FORMS_STR-ERDAT sy-vline 
WA_VNWVIEW_L07_FORMS_STR-ERNAM sy-vline 
WA_VNWVIEW_L07_FORMS_STR-UPDAT sy-vline 
WA_VNWVIEW_L07_FORMS_STR-UPNAM sy-vline 
WA_VNWVIEW_L07_FORMS_STR-KZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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