ABAP Select data from SAP table VVSCPOSETAX into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VVSCPOSETAX
*  INTO TABLE @DATA(IT_VVSCPOSETAX2).
*--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_VVSCPOSETAX INDEX 1 INTO DATA(WA_VVSCPOSETAX2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VVSCPOSETAX>-MANDT = 1.
<VVSCPOSETAX>-GPART = 1.
<VVSCPOSETAX>-VTREF = 1.
<VVSCPOSETAX>-POSNR = 1.
<VVSCPOSETAX>-SCPOSNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VVSCPOSETAX-KSCHL, sy-vline,
  WA_VVSCPOSETAX-LFDNR, sy-vline,
  WA_VVSCPOSETAX-TAXAM, sy-vline,
  WA_VVSCPOSETAX-STPRZ, sy-vline,
  WA_VVSCPOSETAX-SBASW, sy-vline,
  WA_VVSCPOSETAX-KTOSL_TAX, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VVSCPOSETAX 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_VVSCPOSETAX 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_VVSCPOSETAX INTO WA_VVSCPOSETAX.


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

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

*Conversion exit ALPHA, internal->external for field POSNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VVSCPOSETAX-POSNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VVSCPOSETAX-POSNR.
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_VVSCPOSETAX_STR, 
MANDT TYPE STRING,
GPART TYPE STRING,
VTREF TYPE STRING,
POSNR TYPE STRING,
SCPOSNR TYPE STRING,
KSCHL TYPE STRING,
LFDNR TYPE STRING,
TAXAM TYPE STRING,
STPRZ TYPE STRING,
SBASW TYPE STRING,
KTOSL_TAX TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VVSCPOSETAX_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_VVSCPOSETAX_STR-MANDT sy-vline 
WA_VVSCPOSETAX_STR-GPART sy-vline 
WA_VVSCPOSETAX_STR-VTREF sy-vline 
WA_VVSCPOSETAX_STR-POSNR sy-vline 
WA_VVSCPOSETAX_STR-SCPOSNR sy-vline 
WA_VVSCPOSETAX_STR-KSCHL sy-vline 
WA_VVSCPOSETAX_STR-LFDNR sy-vline 
WA_VVSCPOSETAX_STR-TAXAM sy-vline 
WA_VVSCPOSETAX_STR-STPRZ sy-vline 
WA_VVSCPOSETAX_STR-SBASW sy-vline 
WA_VVSCPOSETAX_STR-KTOSL_TAX sy-vline      INTO ld_text SEPARATED BY SPACE.

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