ABAP Select data from SAP table WTY_PNWTYV_IDOC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WTY_PNWTYV_IDOC
*  INTO TABLE @DATA(IT_WTY_PNWTYV_IDOC2).
*--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_WTY_PNWTYV_IDOC INDEX 1 INTO DATA(WA_WTY_PNWTYV_IDOC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WTY_PNWTYV_IDOC>-TXT_LOG_HANDLE = 1.
<WTY_PNWTYV_IDOC>-MANDT = 1.
<WTY_PNWTYV_IDOC>-PNGUID = 1.
<WTY_PNWTYV_IDOC>-PNCNT = 1.
<WTY_PNWTYV_IDOC>-PNTXCNT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WTY_PNWTYV_IDOC-VERSN, sy-vline,
  WA_WTY_PNWTYV_IDOC-KATEG, sy-vline,
  WA_WTY_PNWTYV_IDOC-V_REJCD, sy-vline,
  WA_WTY_PNWTYV_IDOC-V_PARNR, sy-vline,
  WA_WTY_PNWTYV_IDOC-V_PARVW, sy-vline,
  WA_WTY_PNWTYV_IDOC-REFKT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WTY_PNWTYV_IDOC 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_WTY_PNWTYV_IDOC 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_WTY_PNWTYV_IDOC INTO WA_WTY_PNWTYV_IDOC.


*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 V_PARNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WTY_PNWTYV_IDOC-V_PARNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WTY_PNWTYV_IDOC-V_PARNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PARVW, internal->external for field V_PARVW
CALL FUNCTION 'CONVERSION_EXIT_PARVW_OUTPUT'
  EXPORTING
    input =                      WA_WTY_PNWTYV_IDOC-V_PARVW
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WTY_PNWTYV_IDOC-V_PARVW.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EXCRT, internal->external for field KURSK
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_WTY_PNWTYV_IDOC-KURSK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WTY_PNWTYV_IDOC-KURSK.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field V_MGANR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WTY_PNWTYV_IDOC-V_MGANR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WTY_PNWTYV_IDOC-V_MGANR.
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_WTY_PNWTYV_IDOC_STR, 
TXT_LOG_HANDLE TYPE STRING,
MANDT TYPE STRING,
PNGUID TYPE STRING,
PNCNT TYPE STRING,
PNTXCNT TYPE STRING,
VERSN TYPE STRING,
KATEG TYPE STRING,
V_REJCD TYPE STRING,
V_PARNR TYPE STRING,
V_PARVW TYPE STRING,
REFKT TYPE STRING,
REFNR TYPE STRING,
AKTIV TYPE STRING,
FKDAT TYPE STRING,
KNUMV TYPE STRING,
V_CRNCY TYPE STRING,
PRSDT TYPE STRING,
KURSK TYPE STRING,
V_LOG_HANDLE TYPE STRING,
LOG_HDL_DFCT TYPE STRING,
PREV_VERSION TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
V_MDOCM TYPE STRING,
REVERSAL TYPE STRING,
ENDVN TYPE STRING,
EKORG TYPE STRING,
SDVBELN TYPE STRING,
SDPOSNR TYPE STRING,
REFDT_VERS TYPE STRING,
V_MGANR TYPE STRING,
V_GWLDT TYPE STRING,
RESULT_OUT_MWTYV TYPE STRING,
RESULT_IN_MWTYV TYPE STRING,
V_DUMMY TYPE STRING,
PRICING_OK TYPE STRING,
NEW_VERSION TYPE STRING,
COMPSEND TYPE STRING,
TIMSTMP TYPE STRING,
CREADAT TYPE STRING,
CREABY TYPE STRING,
CHNGDAT TYPE STRING,
CHNGBY TYPE STRING,
HEADER_GUID TYPE STRING,
PNTEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WTY_PNWTYV_IDOC_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_WTY_PNWTYV_IDOC_STR-TXT_LOG_HANDLE sy-vline 
WA_WTY_PNWTYV_IDOC_STR-MANDT sy-vline 
WA_WTY_PNWTYV_IDOC_STR-PNGUID sy-vline 
WA_WTY_PNWTYV_IDOC_STR-PNCNT sy-vline 
WA_WTY_PNWTYV_IDOC_STR-PNTXCNT sy-vline 
WA_WTY_PNWTYV_IDOC_STR-VERSN sy-vline 
WA_WTY_PNWTYV_IDOC_STR-KATEG sy-vline 
WA_WTY_PNWTYV_IDOC_STR-V_REJCD sy-vline 
WA_WTY_PNWTYV_IDOC_STR-V_PARNR sy-vline 
WA_WTY_PNWTYV_IDOC_STR-V_PARVW sy-vline 
WA_WTY_PNWTYV_IDOC_STR-REFKT sy-vline 
WA_WTY_PNWTYV_IDOC_STR-REFNR sy-vline 
WA_WTY_PNWTYV_IDOC_STR-AKTIV sy-vline 
WA_WTY_PNWTYV_IDOC_STR-FKDAT sy-vline 
WA_WTY_PNWTYV_IDOC_STR-KNUMV sy-vline 
WA_WTY_PNWTYV_IDOC_STR-V_CRNCY sy-vline 
WA_WTY_PNWTYV_IDOC_STR-PRSDT sy-vline 
WA_WTY_PNWTYV_IDOC_STR-KURSK sy-vline 
WA_WTY_PNWTYV_IDOC_STR-V_LOG_HANDLE sy-vline 
WA_WTY_PNWTYV_IDOC_STR-LOG_HDL_DFCT sy-vline 
WA_WTY_PNWTYV_IDOC_STR-PREV_VERSION sy-vline 
WA_WTY_PNWTYV_IDOC_STR-VKORG sy-vline 
WA_WTY_PNWTYV_IDOC_STR-VTWEG sy-vline 
WA_WTY_PNWTYV_IDOC_STR-SPART sy-vline 
WA_WTY_PNWTYV_IDOC_STR-V_MDOCM sy-vline 
WA_WTY_PNWTYV_IDOC_STR-REVERSAL sy-vline 
WA_WTY_PNWTYV_IDOC_STR-ENDVN sy-vline 
WA_WTY_PNWTYV_IDOC_STR-EKORG sy-vline 
WA_WTY_PNWTYV_IDOC_STR-SDVBELN sy-vline 
WA_WTY_PNWTYV_IDOC_STR-SDPOSNR sy-vline 
WA_WTY_PNWTYV_IDOC_STR-REFDT_VERS sy-vline 
WA_WTY_PNWTYV_IDOC_STR-V_MGANR sy-vline 
WA_WTY_PNWTYV_IDOC_STR-V_GWLDT sy-vline 
WA_WTY_PNWTYV_IDOC_STR-RESULT_OUT_MWTYV sy-vline 
WA_WTY_PNWTYV_IDOC_STR-RESULT_IN_MWTYV sy-vline 
WA_WTY_PNWTYV_IDOC_STR-V_DUMMY sy-vline 
WA_WTY_PNWTYV_IDOC_STR-PRICING_OK sy-vline 
WA_WTY_PNWTYV_IDOC_STR-NEW_VERSION sy-vline 
WA_WTY_PNWTYV_IDOC_STR-COMPSEND sy-vline 
WA_WTY_PNWTYV_IDOC_STR-TIMSTMP sy-vline 
WA_WTY_PNWTYV_IDOC_STR-CREADAT sy-vline 
WA_WTY_PNWTYV_IDOC_STR-CREABY sy-vline 
WA_WTY_PNWTYV_IDOC_STR-CHNGDAT sy-vline 
WA_WTY_PNWTYV_IDOC_STR-CHNGBY sy-vline 
WA_WTY_PNWTYV_IDOC_STR-HEADER_GUID sy-vline 
WA_WTY_PNWTYV_IDOC_STR-PNTEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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