ABAP Select data from SAP table PKRTAXINVC6 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PKRTAXINVC6 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 PKRTAXINVC6. 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 PKRTAXINVC6 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_PKRTAXINVC6 TYPE STANDARD TABLE OF PKRTAXINVC6,
      WA_PKRTAXINVC6 TYPE PKRTAXINVC6,
      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: <PKRTAXINVC6> TYPE PKRTAXINVC6.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PKRTAXINVC6.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PKRTAXINVC6
  INTO TABLE IT_PKRTAXINVC6.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PKRTAXINVC6
*  INTO TABLE @DATA(IT_PKRTAXINVC62).
*--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_PKRTAXINVC6 INDEX 1 INTO DATA(WA_PKRTAXINVC62).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PKRTAXINVC6 ASSIGNING <PKRTAXINVC6>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PKRTAXINVC6>-MANDT = 1.
<PKRTAXINVC6>-COMPANYCODE = 1.
<PKRTAXINVC6>-FISCALYEAR = 1.
<PKRTAXINVC6>-ACCOUNTINGDOCUMENT = 1.
<PKRTAXINVC6>-BUSINESSPLACE = 1.

ENDLOOP.

LOOP AT IT_PKRTAXINVC6 INTO WA_PKRTAXINVC6.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PKRTAXINVC6-COMPANYCODECURRENCY, sy-vline,
  WA_PKRTAXINVC6-TAXAMOUNTINCOCODECRCY, sy-vline,
  WA_PKRTAXINVC6-TAXBASEAMOUNTINCOCODECRCY, sy-vline,
  WA_PKRTAXINVC6-TAXAMOUNT, sy-vline,
  WA_PKRTAXINVC6-TAXBASEAMOUNTINTRANSCRCY, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_PKRTAXINVC6 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_PKRTAXINVC6 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_PKRTAXINVC6 INTO WA_PKRTAXINVC6.


*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 FISCALYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_PKRTAXINVC6-FISCALYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PKRTAXINVC6-FISCALYEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ACCOUNTINGDOCUMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PKRTAXINVC6-ACCOUNTINGDOCUMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PKRTAXINVC6-ACCOUNTINGDOCUMENT.
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_PKRTAXINVC6_STR, 
MANDT TYPE STRING,
COMPANYCODE TYPE STRING,
FISCALYEAR TYPE STRING,
ACCOUNTINGDOCUMENT TYPE STRING,
BUSINESSPLACE TYPE STRING,
COMPANYCODECURRENCY TYPE STRING,
TAXAMOUNTINCOCODECRCY TYPE STRING,
TAXBASEAMOUNTINCOCODECRCY TYPE STRING,
TAXAMOUNT TYPE STRING,
TAXBASEAMOUNTINTRANSCRCY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PKRTAXINVC6_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_PKRTAXINVC6_STR-MANDT sy-vline 
WA_PKRTAXINVC6_STR-COMPANYCODE sy-vline 
WA_PKRTAXINVC6_STR-FISCALYEAR sy-vline 
WA_PKRTAXINVC6_STR-ACCOUNTINGDOCUMENT sy-vline 
WA_PKRTAXINVC6_STR-BUSINESSPLACE sy-vline 
WA_PKRTAXINVC6_STR-COMPANYCODECURRENCY sy-vline 
WA_PKRTAXINVC6_STR-TAXAMOUNTINCOCODECRCY sy-vline 
WA_PKRTAXINVC6_STR-TAXBASEAMOUNTINCOCODECRCY sy-vline 
WA_PKRTAXINVC6_STR-TAXAMOUNT sy-vline 
WA_PKRTAXINVC6_STR-TAXBASEAMOUNTINTRANSCRCY sy-vline      INTO ld_text SEPARATED BY SPACE.

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