ABAP Select data from SAP table V_N2ZTPDEF into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP V_N2ZTPDEF 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 V_N2ZTPDEF. 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 V_N2ZTPDEF 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_V_N2ZTPDEF TYPE STANDARD TABLE OF V_N2ZTPDEF,
      WA_V_N2ZTPDEF TYPE V_N2ZTPDEF,
      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: <V_N2ZTPDEF> TYPE V_N2ZTPDEF.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_V_N2ZTPDEF.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM V_N2ZTPDEF
  INTO TABLE IT_V_N2ZTPDEF.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_N2ZTPDEF
*  INTO TABLE @DATA(IT_V_N2ZTPDEF2).
*--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_V_N2ZTPDEF INDEX 1 INTO DATA(WA_V_N2ZTPDEF2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_V_N2ZTPDEF ASSIGNING <V_N2ZTPDEF>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_N2ZTPDEF>-MANDT = 1.
<V_N2ZTPDEF>-EINRI = 1.
<V_N2ZTPDEF>-ZPID = 1.
<V_N2ZTPDEF>-ZPBEZ = 1.
<V_N2ZTPDEF>-ZPTYP = 1.

ENDLOOP.

LOOP AT IT_V_N2ZTPDEF INTO WA_V_N2ZTPDEF.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_N2ZTPDEF-ZPBER, sy-vline,
  WA_V_N2ZTPDEF-ZPVER1, sy-vline,
  WA_V_N2ZTPDEF-ZPVER2, sy-vline,
  WA_V_N2ZTPDEF-ZPFN, sy-vline,
  WA_V_N2ZTPDEF-ZPREFID, sy-vline,
  WA_V_N2ZTPDEF-ZPNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_N2ZTPDEF 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_V_N2ZTPDEF 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_V_N2ZTPDEF INTO WA_V_N2ZTPDEF.


*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 EINRI
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_N2ZTPDEF-EINRI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_N2ZTPDEF-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_V_N2ZTPDEF_STR, 
MANDT TYPE STRING,
EINRI TYPE STRING,
ZPID TYPE STRING,
ZPBEZ TYPE STRING,
ZPTYP TYPE STRING,
ZPBER TYPE STRING,
ZPVER1 TYPE STRING,
ZPVER2 TYPE STRING,
ZPFN TYPE STRING,
ZPREFID TYPE STRING,
ZPNR TYPE STRING,
ZPXPOS TYPE STRING,
ZPNEWL TYPE STRING,
ZPSTATISTIK TYPE STRING,
ZPSCHNITT TYPE STRING,
ZPNAHT TYPE STRING,
ZPOPBUCH TYPE STRING,
ZPREPORT TYPE STRING,
ZPBEW_ERF TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_N2ZTPDEF_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_V_N2ZTPDEF_STR-MANDT sy-vline 
WA_V_N2ZTPDEF_STR-EINRI sy-vline 
WA_V_N2ZTPDEF_STR-ZPID sy-vline 
WA_V_N2ZTPDEF_STR-ZPBEZ sy-vline 
WA_V_N2ZTPDEF_STR-ZPTYP sy-vline 
WA_V_N2ZTPDEF_STR-ZPBER sy-vline 
WA_V_N2ZTPDEF_STR-ZPVER1 sy-vline 
WA_V_N2ZTPDEF_STR-ZPVER2 sy-vline 
WA_V_N2ZTPDEF_STR-ZPFN sy-vline 
WA_V_N2ZTPDEF_STR-ZPREFID sy-vline 
WA_V_N2ZTPDEF_STR-ZPNR sy-vline 
WA_V_N2ZTPDEF_STR-ZPXPOS sy-vline 
WA_V_N2ZTPDEF_STR-ZPNEWL sy-vline 
WA_V_N2ZTPDEF_STR-ZPSTATISTIK sy-vline 
WA_V_N2ZTPDEF_STR-ZPSCHNITT sy-vline 
WA_V_N2ZTPDEF_STR-ZPNAHT sy-vline 
WA_V_N2ZTPDEF_STR-ZPOPBUCH sy-vline 
WA_V_N2ZTPDEF_STR-ZPREPORT sy-vline 
WA_V_N2ZTPDEF_STR-ZPBEW_ERF sy-vline      INTO ld_text SEPARATED BY SPACE.

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