ABAP Select data from SAP table NPTXD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM NPTXD
*  INTO TABLE @DATA(IT_NPTXD2).
*--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_NPTXD INDEX 1 INTO DATA(WA_NPTXD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<NPTXD>-NPMANDT = 1.
<NPTXD>-NPAUFPL = 1.
<NPTXD>-NPAPLZL = 1.
<NPTXD>-NPTXTKY = 1.
<NPTXD>-NPLOEKZ = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_NPTXD-PSMANDT, sy-vline,
  WA_NPTXD-PSTXTKY, sy-vline,
  WA_NPTXD-PSTXTAR, sy-vline,
  WA_NPTXD-PSTXTTI, sy-vline,
  WA_NPTXD-PSTXTHU, sy-vline,
  WA_NPTXD-PSTXTHD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_NPTXD 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_NPTXD 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_NPTXD INTO WA_NPTXD.


*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 ISOLA, internal->external for field SPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_NPTXD-SPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_NPTXD-SPRAS.
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_NPTXD_STR, 
NPMANDT TYPE STRING,
NPAUFPL TYPE STRING,
NPAPLZL TYPE STRING,
NPTXTKY TYPE STRING,
NPLOEKZ TYPE STRING,
PSMANDT TYPE STRING,
PSTXTKY TYPE STRING,
PSTXTAR TYPE STRING,
PSTXTTI TYPE STRING,
PSTXTHU TYPE STRING,
PSTXTHD TYPE STRING,
PSTXTAU TYPE STRING,
PSTXTAD TYPE STRING,
PSFORMAT TYPE STRING,
LASTCHANGEDON TYPE STRING,
SPRAS TYPE STRING,
VSNMR TYPE STRING,
TXTLN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_NPTXD_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_NPTXD_STR-NPMANDT sy-vline 
WA_NPTXD_STR-NPAUFPL sy-vline 
WA_NPTXD_STR-NPAPLZL sy-vline 
WA_NPTXD_STR-NPTXTKY sy-vline 
WA_NPTXD_STR-NPLOEKZ sy-vline 
WA_NPTXD_STR-PSMANDT sy-vline 
WA_NPTXD_STR-PSTXTKY sy-vline 
WA_NPTXD_STR-PSTXTAR sy-vline 
WA_NPTXD_STR-PSTXTTI sy-vline 
WA_NPTXD_STR-PSTXTHU sy-vline 
WA_NPTXD_STR-PSTXTHD sy-vline 
WA_NPTXD_STR-PSTXTAU sy-vline 
WA_NPTXD_STR-PSTXTAD sy-vline 
WA_NPTXD_STR-PSFORMAT sy-vline 
WA_NPTXD_STR-LASTCHANGEDON sy-vline 
WA_NPTXD_STR-SPRAS sy-vline 
WA_NPTXD_STR-VSNMR sy-vline 
WA_NPTXD_STR-TXTLN sy-vline      INTO ld_text SEPARATED BY SPACE.

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