ABAP Select data from SAP table V_NKIP_1 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP V_NKIP_1 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_NKIP_1. 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_NKIP_1 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_NKIP_1 TYPE STANDARD TABLE OF V_NKIP_1,
      WA_V_NKIP_1 TYPE V_NKIP_1,
      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_NKIP_1> TYPE V_NKIP_1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_V_NKIP_1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM V_NKIP_1
  INTO TABLE IT_V_NKIP_1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_NKIP_1
*  INTO TABLE @DATA(IT_V_NKIP_12).
*--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_NKIP_1 INDEX 1 INTO DATA(WA_V_NKIP_12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_V_NKIP_1 ASSIGNING <V_NKIP_1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_NKIP_1>-MANDT = 1.
<V_NKIP_1>-EINRI = 1.
<V_NKIP_1>-FALAR = 1.
<V_NKIP_1>-KTART = 1.
<V_NKIP_1>-KOSTR = 1.

ENDLOOP.

LOOP AT IT_V_NKIP_1 INTO WA_V_NKIP_1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_NKIP_1-VTRTY, sy-vline,
  WA_V_NKIP_1-LNRKI, sy-vline,
  WA_V_NKIP_1-SEKZ, sy-vline,
  WA_V_NKIP_1-TARID, sy-vline,
  WA_V_NKIP_1-LEIID, sy-vline,
  WA_V_NKIP_1-KBTRAG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_NKIP_1 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_NKIP_1 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_NKIP_1 INTO WA_V_NKIP_1.


*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_NKIP_1-EINRI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_NKIP_1-EINRI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KTART
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_NKIP_1-KTART
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_NKIP_1-KTART.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KOSTR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_NKIP_1-KOSTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_NKIP_1-KOSTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VTRTY
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_NKIP_1-VTRTY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_NKIP_1-VTRTY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LNRKI
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_NKIP_1-LNRKI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_NKIP_1-LNRKI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field TARID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_NKIP_1-TARID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_NKIP_1-TARID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LEIID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_NKIP_1-LEIID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_NKIP_1-LEIID.
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_NKIP_1_STR, 
MANDT TYPE STRING,
EINRI TYPE STRING,
FALAR TYPE STRING,
KTART TYPE STRING,
KOSTR TYPE STRING,
VTRTY TYPE STRING,
LNRKI TYPE STRING,
SEKZ TYPE STRING,
TARID TYPE STRING,
LEIID TYPE STRING,
KBTRAG TYPE STRING,
KMENGE TYPE STRING,
KPREIS TYPE STRING,
KPROZ TYPE STRING,
ABGEL TYPE STRING,
UPDAT TYPE STRING,
UPUSR TYPE STRING,
ERDAT TYPE STRING,
ERUSR TYPE STRING,
VERWE TYPE STRING,
EINKB TYPE STRING,
EINBZ TYPE STRING,
KATKB TYPE STRING,
KATTX TYPE STRING,
KUTXT TYPE STRING,
LTEXT TYPE STRING,
WAERS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_NKIP_1_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_NKIP_1_STR-MANDT sy-vline 
WA_V_NKIP_1_STR-EINRI sy-vline 
WA_V_NKIP_1_STR-FALAR sy-vline 
WA_V_NKIP_1_STR-KTART sy-vline 
WA_V_NKIP_1_STR-KOSTR sy-vline 
WA_V_NKIP_1_STR-VTRTY sy-vline 
WA_V_NKIP_1_STR-LNRKI sy-vline 
WA_V_NKIP_1_STR-SEKZ sy-vline 
WA_V_NKIP_1_STR-TARID sy-vline 
WA_V_NKIP_1_STR-LEIID sy-vline 
WA_V_NKIP_1_STR-KBTRAG sy-vline 
WA_V_NKIP_1_STR-KMENGE sy-vline 
WA_V_NKIP_1_STR-KPREIS sy-vline 
WA_V_NKIP_1_STR-KPROZ sy-vline 
WA_V_NKIP_1_STR-ABGEL sy-vline 
WA_V_NKIP_1_STR-UPDAT sy-vline 
WA_V_NKIP_1_STR-UPUSR sy-vline 
WA_V_NKIP_1_STR-ERDAT sy-vline 
WA_V_NKIP_1_STR-ERUSR sy-vline 
WA_V_NKIP_1_STR-VERWE sy-vline 
WA_V_NKIP_1_STR-EINKB sy-vline 
WA_V_NKIP_1_STR-EINBZ sy-vline 
WA_V_NKIP_1_STR-KATKB sy-vline 
WA_V_NKIP_1_STR-KATTX sy-vline 
WA_V_NKIP_1_STR-KUTXT sy-vline 
WA_V_NKIP_1_STR-LTEXT sy-vline 
WA_V_NKIP_1_STR-WAERS sy-vline      INTO ld_text SEPARATED BY SPACE.

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