ABAP Select data from SAP table VN1PGPRINTSETTINGS into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP VN1PGPRINTSETTINGS 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 VN1PGPRINTSETTINGS. 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 VN1PGPRINTSETTINGS 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_VN1PGPRINTSETTINGS TYPE STANDARD TABLE OF VN1PGPRINTSETTINGS,
      WA_VN1PGPRINTSETTINGS TYPE VN1PGPRINTSETTINGS,
      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: <VN1PGPRINTSETTINGS> TYPE VN1PGPRINTSETTINGS.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_VN1PGPRINTSETTINGS.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM VN1PGPRINTSETTINGS
  INTO TABLE IT_VN1PGPRINTSETTINGS.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VN1PGPRINTSETTINGS
*  INTO TABLE @DATA(IT_VN1PGPRINTSETTINGS2).
*--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_VN1PGPRINTSETTINGS INDEX 1 INTO DATA(WA_VN1PGPRINTSETTINGS2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_VN1PGPRINTSETTINGS ASSIGNING <VN1PGPRINTSETTINGS>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VN1PGPRINTSETTINGS>-MANDT = 1.
<VN1PGPRINTSETTINGS>-NWPLACETYPE = 1.
<VN1PGPRINTSETTINGS>-NWPLACEID = 1.
<VN1PGPRINTSETTINGS>-PGDBA = 1.
<VN1PGPRINTSETTINGS>-PGCOMMENT = 1.

ENDLOOP.

LOOP AT IT_VN1PGPRINTSETTINGS INTO WA_VN1PGPRINTSETTINGS.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VN1PGPRINTSETTINGS-APPOFFER, sy-vline,
  WA_VN1PGPRINTSETTINGS-PLAUTH, sy-vline,
  WA_VN1PGPRINTSETTINGS-APPLAN, sy-vline,
  WA_VN1PGPRINTSETTINGS-SHADOWAPPMNT, sy-vline,
  WA_VN1PGPRINTSETTINGS-ORIENTATION, sy-vline,
  WA_VN1PGPRINTSETTINGS-FITWIDTHTOPAGE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VN1PGPRINTSETTINGS 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_VN1PGPRINTSETTINGS 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_VN1PGPRINTSETTINGS INTO WA_VN1PGPRINTSETTINGS.


*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_VN1PGPRINTSETTINGS_STR, 
MANDT TYPE STRING,
NWPLACETYPE TYPE STRING,
NWPLACEID TYPE STRING,
PGDBA TYPE STRING,
PGCOMMENT TYPE STRING,
APPOFFER TYPE STRING,
PLAUTH TYPE STRING,
APPLAN TYPE STRING,
SHADOWAPPMNT TYPE STRING,
ORIENTATION TYPE STRING,
FITWIDTHTOPAGE TYPE STRING,
FITHEIGHTTOPAGE TYPE STRING,
SEPARATE TYPE STRING,
PGPAGES TYPE STRING,
BLACKWHITE TYPE STRING,
ERDAT TYPE STRING,
ERUSR TYPE STRING,
UPDAT TYPE STRING,
UPUSR TYPE STRING,
STORN TYPE STRING,
STUSR TYPE STRING,
STDAT TYPE STRING,
KZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VN1PGPRINTSETTINGS_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_VN1PGPRINTSETTINGS_STR-MANDT sy-vline 
WA_VN1PGPRINTSETTINGS_STR-NWPLACETYPE sy-vline 
WA_VN1PGPRINTSETTINGS_STR-NWPLACEID sy-vline 
WA_VN1PGPRINTSETTINGS_STR-PGDBA sy-vline 
WA_VN1PGPRINTSETTINGS_STR-PGCOMMENT sy-vline 
WA_VN1PGPRINTSETTINGS_STR-APPOFFER sy-vline 
WA_VN1PGPRINTSETTINGS_STR-PLAUTH sy-vline 
WA_VN1PGPRINTSETTINGS_STR-APPLAN sy-vline 
WA_VN1PGPRINTSETTINGS_STR-SHADOWAPPMNT sy-vline 
WA_VN1PGPRINTSETTINGS_STR-ORIENTATION sy-vline 
WA_VN1PGPRINTSETTINGS_STR-FITWIDTHTOPAGE sy-vline 
WA_VN1PGPRINTSETTINGS_STR-FITHEIGHTTOPAGE sy-vline 
WA_VN1PGPRINTSETTINGS_STR-SEPARATE sy-vline 
WA_VN1PGPRINTSETTINGS_STR-PGPAGES sy-vline 
WA_VN1PGPRINTSETTINGS_STR-BLACKWHITE sy-vline 
WA_VN1PGPRINTSETTINGS_STR-ERDAT sy-vline 
WA_VN1PGPRINTSETTINGS_STR-ERUSR sy-vline 
WA_VN1PGPRINTSETTINGS_STR-UPDAT sy-vline 
WA_VN1PGPRINTSETTINGS_STR-UPUSR sy-vline 
WA_VN1PGPRINTSETTINGS_STR-STORN sy-vline 
WA_VN1PGPRINTSETTINGS_STR-STUSR sy-vline 
WA_VN1PGPRINTSETTINGS_STR-STDAT sy-vline 
WA_VN1PGPRINTSETTINGS_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.