ABAP Select data from SAP table V2_NTPKD into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP V2_NTPKD 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 V2_NTPKD. 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 V2_NTPKD 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_V2_NTPKD TYPE STANDARD TABLE OF V2_NTPKD,
      WA_V2_NTPKD TYPE V2_NTPKD,
      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: <V2_NTPKD> TYPE V2_NTPKD.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_V2_NTPKD.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM V2_NTPKD
  INTO TABLE IT_V2_NTPKD.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V2_NTPKD
*  INTO TABLE @DATA(IT_V2_NTPKD2).
*--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_V2_NTPKD INDEX 1 INTO DATA(WA_V2_NTPKD2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_V2_NTPKD ASSIGNING <V2_NTPKD>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V2_NTPKD>-MANDT = 1.
<V2_NTPKD>-EINRI = 1.
<V2_NTPKD>-TARIF = 1.
<V2_NTPKD>-TALST = 1.
<V2_NTPKD>-ENDDA = 1.

ENDLOOP.

LOOP AT IT_V2_NTPKD INTO WA_V2_NTPKD.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V2_NTPKD-BEGDA, sy-vline,
  WA_V2_NTPKD-GVDH, sy-vline,
  WA_V2_NTPKD-GVDB, sy-vline,
  WA_V2_NTPKD-GVDIH, sy-vline,
  WA_V2_NTPKD-GVDIB, sy-vline,
  WA_V2_NTPKD-NVDH, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V2_NTPKD 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_V2_NTPKD 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_V2_NTPKD INTO WA_V2_NTPKD.


*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_V2_NTPKD-EINRI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V2_NTPKD-EINRI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field TARIF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V2_NTPKD-TARIF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V2_NTPKD-TARIF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field TALST
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V2_NTPKD-TALST
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V2_NTPKD-TALST.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ENTGA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V2_NTPKD-ENTGA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V2_NTPKD-ENTGA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field FPACT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V2_NTPKD-FPACT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V2_NTPKD-FPACT.
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_V2_NTPKD_STR, 
MANDT TYPE STRING,
EINRI TYPE STRING,
TARIF TYPE STRING,
TALST TYPE STRING,
ENDDA TYPE STRING,
BEGDA TYPE STRING,
GVDH TYPE STRING,
GVDB TYPE STRING,
GVDIH TYPE STRING,
GVDIB TYPE STRING,
NVDH TYPE STRING,
NVDB TYPE STRING,
PLANZ TYPE STRING,
UPDAT TYPE STRING,
UPUSR TYPE STRING,
ENTGA TYPE STRING,
KTXT1 TYPE STRING,
NVDIH TYPE STRING,
NVDIB TYPE STRING,
PZPE TYPE STRING,
PZSA TYPE STRING,
PZBPE TYPE STRING,
PZBSA TYPE STRING,
MINVD TYPE STRING,
FPACT TYPE STRING,
MODNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V2_NTPKD_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_V2_NTPKD_STR-MANDT sy-vline 
WA_V2_NTPKD_STR-EINRI sy-vline 
WA_V2_NTPKD_STR-TARIF sy-vline 
WA_V2_NTPKD_STR-TALST sy-vline 
WA_V2_NTPKD_STR-ENDDA sy-vline 
WA_V2_NTPKD_STR-BEGDA sy-vline 
WA_V2_NTPKD_STR-GVDH sy-vline 
WA_V2_NTPKD_STR-GVDB sy-vline 
WA_V2_NTPKD_STR-GVDIH sy-vline 
WA_V2_NTPKD_STR-GVDIB sy-vline 
WA_V2_NTPKD_STR-NVDH sy-vline 
WA_V2_NTPKD_STR-NVDB sy-vline 
WA_V2_NTPKD_STR-PLANZ sy-vline 
WA_V2_NTPKD_STR-UPDAT sy-vline 
WA_V2_NTPKD_STR-UPUSR sy-vline 
WA_V2_NTPKD_STR-ENTGA sy-vline 
WA_V2_NTPKD_STR-KTXT1 sy-vline 
WA_V2_NTPKD_STR-NVDIH sy-vline 
WA_V2_NTPKD_STR-NVDIB sy-vline 
WA_V2_NTPKD_STR-PZPE sy-vline 
WA_V2_NTPKD_STR-PZSA sy-vline 
WA_V2_NTPKD_STR-PZBPE sy-vline 
WA_V2_NTPKD_STR-PZBSA sy-vline 
WA_V2_NTPKD_STR-MINVD sy-vline 
WA_V2_NTPKD_STR-FPACT sy-vline 
WA_V2_NTPKD_STR-MODNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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