ABAP Select data from SAP table NTWXPD_INPUT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM NTWXPD_INPUT
*  INTO TABLE @DATA(IT_NTWXPD_INPUT2).
*--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_NTWXPD_INPUT INDEX 1 INTO DATA(WA_NTWXPD_INPUT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<NTWXPD_INPUT>-IDENT = 1.
<NTWXPD_INPUT>-PSPID = 1.
<NTWXPD_INPUT>-POSID = 1.
<NTWXPD_INPUT>-AUFNR = 1.
<NTWXPD_INPUT>-VORNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_NTWXPD_INPUT-LTXA1, sy-vline,
  WA_NTWXPD_INPUT-FSAVD, sy-vline,
  WA_NTWXPD_INPUT-FSAVZ, sy-vline,
  WA_NTWXPD_INPUT-FSEDD, sy-vline,
  WA_NTWXPD_INPUT-FSEDZ, sy-vline,
  WA_NTWXPD_INPUT-SSAVD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_NTWXPD_INPUT 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_NTWXPD_INPUT 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_NTWXPD_INPUT INTO WA_NTWXPD_INPUT.


*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 ABPSN, internal->external for field PSPID
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_NTWXPD_INPUT-PSPID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_NTWXPD_INPUT-PSPID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSN, internal->external for field POSID
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_NTWXPD_INPUT-POSID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_NTWXPD_INPUT-POSID.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit NUMCV, internal->external for field VORNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_NTWXPD_INPUT-VORNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_NTWXPD_INPUT-VORNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field BEAZE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_NTWXPD_INPUT-BEAZE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_NTWXPD_INPUT-BEAZE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ARBEITE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_NTWXPD_INPUT-ARBEITE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_NTWXPD_INPUT-ARBEITE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field PDAE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_NTWXPD_INPUT-PDAE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_NTWXPD_INPUT-PDAE.
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_NTWXPD_INPUT_STR, 
IDENT TYPE STRING,
PSPID TYPE STRING,
POSID TYPE STRING,
AUFNR TYPE STRING,
VORNR TYPE STRING,
LTXA1 TYPE STRING,
FSAVD TYPE STRING,
FSAVZ TYPE STRING,
FSEDD TYPE STRING,
FSEDZ TYPE STRING,
SSAVD TYPE STRING,
SSAVZ TYPE STRING,
SSEDD TYPE STRING,
SSEDZ TYPE STRING,
ISDD TYPE STRING,
ISDZ TYPE STRING,
IEDD TYPE STRING,
IEDZ TYPE STRING,
CO_PEDD TYPE STRING,
CO_PEDZ TYPE STRING,
EPANF TYPE STRING,
EPANZ TYPE STRING,
EPEND TYPE STRING,
EPENZ TYPE STRING,
CO_DAUBEA TYPE STRING,
BEAZE TYPE STRING,
ARBEIT TYPE STRING,
ARBEITE TYPE STRING,
CO_ISMNW TYPE STRING,
PDAU TYPE STRING,
PDAE TYPE STRING,
OFMNW TYPE STRING,END OF T_EKKO_STR.
DATA: WA_NTWXPD_INPUT_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_NTWXPD_INPUT_STR-IDENT sy-vline 
WA_NTWXPD_INPUT_STR-PSPID sy-vline 
WA_NTWXPD_INPUT_STR-POSID sy-vline 
WA_NTWXPD_INPUT_STR-AUFNR sy-vline 
WA_NTWXPD_INPUT_STR-VORNR sy-vline 
WA_NTWXPD_INPUT_STR-LTXA1 sy-vline 
WA_NTWXPD_INPUT_STR-FSAVD sy-vline 
WA_NTWXPD_INPUT_STR-FSAVZ sy-vline 
WA_NTWXPD_INPUT_STR-FSEDD sy-vline 
WA_NTWXPD_INPUT_STR-FSEDZ sy-vline 
WA_NTWXPD_INPUT_STR-SSAVD sy-vline 
WA_NTWXPD_INPUT_STR-SSAVZ sy-vline 
WA_NTWXPD_INPUT_STR-SSEDD sy-vline 
WA_NTWXPD_INPUT_STR-SSEDZ sy-vline 
WA_NTWXPD_INPUT_STR-ISDD sy-vline 
WA_NTWXPD_INPUT_STR-ISDZ sy-vline 
WA_NTWXPD_INPUT_STR-IEDD sy-vline 
WA_NTWXPD_INPUT_STR-IEDZ sy-vline 
WA_NTWXPD_INPUT_STR-CO_PEDD sy-vline 
WA_NTWXPD_INPUT_STR-CO_PEDZ sy-vline 
WA_NTWXPD_INPUT_STR-EPANF sy-vline 
WA_NTWXPD_INPUT_STR-EPANZ sy-vline 
WA_NTWXPD_INPUT_STR-EPEND sy-vline 
WA_NTWXPD_INPUT_STR-EPENZ sy-vline 
WA_NTWXPD_INPUT_STR-CO_DAUBEA sy-vline 
WA_NTWXPD_INPUT_STR-BEAZE sy-vline 
WA_NTWXPD_INPUT_STR-ARBEIT sy-vline 
WA_NTWXPD_INPUT_STR-ARBEITE sy-vline 
WA_NTWXPD_INPUT_STR-CO_ISMNW sy-vline 
WA_NTWXPD_INPUT_STR-PDAU sy-vline 
WA_NTWXPD_INPUT_STR-PDAE sy-vline 
WA_NTWXPD_INPUT_STR-OFMNW sy-vline      INTO ld_text SEPARATED BY SPACE.

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