ABAP Select data from SAP table IPVVLDOCACCTTAX into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IPVVLDOCACCTTAX
*  INTO TABLE @DATA(IT_IPVVLDOCACCTTAX2).
*--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_IPVVLDOCACCTTAX INDEX 1 INTO DATA(WA_IPVVLDOCACCTTAX2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IPVVLDOCACCTTAX>-MANDT = 1.
<IPVVLDOCACCTTAX>-VALUATIONDOCUMENTYEAR = 1.
<IPVVLDOCACCTTAX>-VALUATIONDOCUMENTNUMBER = 1.
<IPVVLDOCACCTTAX>-BOOKINGREVERSALTYPE = 1.
<IPVVLDOCACCTTAX>-VALNDOCACCTGITEM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IPVVLDOCACCTTAX-DEDUCTIONTYPE, sy-vline,
  WA_IPVVLDOCACCTTAX-COMPANYCODE, sy-vline,
  WA_IPVVLDOCACCTTAX-FISCALPERIOD, sy-vline,
  WA_IPVVLDOCACCTTAX-COMPANYCODECURRENCY, sy-vline,
  WA_IPVVLDOCACCTTAX-NETTAXAMOUNT, sy-vline,
  WA_IPVVLDOCACCTTAX-NETTAXREIMBMTAMT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IPVVLDOCACCTTAX 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_IPVVLDOCACCTTAX 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_IPVVLDOCACCTTAX INTO WA_IPVVLDOCACCTTAX.


*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 GJAHR, internal->external for field VALUATIONDOCUMENTYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_IPVVLDOCACCTTAX-VALUATIONDOCUMENTYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IPVVLDOCACCTTAX-VALUATIONDOCUMENTYEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VALUATIONDOCUMENTNUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IPVVLDOCACCTTAX-VALUATIONDOCUMENTNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IPVVLDOCACCTTAX-VALUATIONDOCUMENTNUMBER.
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_IPVVLDOCACCTTAX_STR, 
MANDT TYPE STRING,
VALUATIONDOCUMENTYEAR TYPE STRING,
VALUATIONDOCUMENTNUMBER TYPE STRING,
BOOKINGREVERSALTYPE TYPE STRING,
VALNDOCACCTGITEM TYPE STRING,
DEDUCTIONTYPE TYPE STRING,
COMPANYCODE TYPE STRING,
FISCALPERIOD TYPE STRING,
COMPANYCODECURRENCY TYPE STRING,
NETTAXAMOUNT TYPE STRING,
NETTAXREIMBMTAMT TYPE STRING,
GROSSTAXAMOUNT TYPE STRING,
GROSSTAXREIMBMTAMT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IPVVLDOCACCTTAX_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_IPVVLDOCACCTTAX_STR-MANDT sy-vline 
WA_IPVVLDOCACCTTAX_STR-VALUATIONDOCUMENTYEAR sy-vline 
WA_IPVVLDOCACCTTAX_STR-VALUATIONDOCUMENTNUMBER sy-vline 
WA_IPVVLDOCACCTTAX_STR-BOOKINGREVERSALTYPE sy-vline 
WA_IPVVLDOCACCTTAX_STR-VALNDOCACCTGITEM sy-vline 
WA_IPVVLDOCACCTTAX_STR-DEDUCTIONTYPE sy-vline 
WA_IPVVLDOCACCTTAX_STR-COMPANYCODE sy-vline 
WA_IPVVLDOCACCTTAX_STR-FISCALPERIOD sy-vline 
WA_IPVVLDOCACCTTAX_STR-COMPANYCODECURRENCY sy-vline 
WA_IPVVLDOCACCTTAX_STR-NETTAXAMOUNT sy-vline 
WA_IPVVLDOCACCTTAX_STR-NETTAXREIMBMTAMT sy-vline 
WA_IPVVLDOCACCTTAX_STR-GROSSTAXAMOUNT sy-vline 
WA_IPVVLDOCACCTTAX_STR-GROSSTAXREIMBMTAMT sy-vline      INTO ld_text SEPARATED BY SPACE.

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