ABAP Select data from SAP table PFITAXCODE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PFITAXCODE
*  INTO TABLE @DATA(IT_PFITAXCODE2).
*--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_PFITAXCODE INDEX 1 INTO DATA(WA_PFITAXCODE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PFITAXCODE>-MANDT = 1.
<PFITAXCODE>-TAXCALCULATIONPROCEDURE = 1.
<PFITAXCODE>-TAXCODE = 1.
<PFITAXCODE>-TAXTYPE = 1.
<PFITAXCODE>-TARGETTAXCODE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PFITAXCODE-EUTAXCLASSIFICATION, sy-vline,
  WA_PFITAXCODE-ISSALESTAXES, sy-vline,
  WA_PFITAXCODE-TAXCATEGORY, sy-vline,
  WA_PFITAXCODE-TAXRETURNCOUNTRY, sy-vline,
  WA_PFITAXCODE-TAXTOLERANCEPERCENT, sy-vline,
  WA_PFITAXCODE-EUACQNINPUTTAXCODE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PFITAXCODE 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_PFITAXCODE 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_PFITAXCODE INTO WA_PFITAXCODE.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_PFITAXCODE_STR, 
MANDT TYPE STRING,
TAXCALCULATIONPROCEDURE TYPE STRING,
TAXCODE TYPE STRING,
TAXTYPE TYPE STRING,
TARGETTAXCODE TYPE STRING,
EUTAXCLASSIFICATION TYPE STRING,
ISSALESTAXES TYPE STRING,
TAXCATEGORY TYPE STRING,
TAXRETURNCOUNTRY TYPE STRING,
TAXTOLERANCEPERCENT TYPE STRING,
EUACQNINPUTTAXCODE TYPE STRING,
EUACQNOUTPUTTAXCODE TYPE STRING,
MOSSTAXCODE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PFITAXCODE_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_PFITAXCODE_STR-MANDT sy-vline 
WA_PFITAXCODE_STR-TAXCALCULATIONPROCEDURE sy-vline 
WA_PFITAXCODE_STR-TAXCODE sy-vline 
WA_PFITAXCODE_STR-TAXTYPE sy-vline 
WA_PFITAXCODE_STR-TARGETTAXCODE sy-vline 
WA_PFITAXCODE_STR-EUTAXCLASSIFICATION sy-vline 
WA_PFITAXCODE_STR-ISSALESTAXES sy-vline 
WA_PFITAXCODE_STR-TAXCATEGORY sy-vline 
WA_PFITAXCODE_STR-TAXRETURNCOUNTRY sy-vline 
WA_PFITAXCODE_STR-TAXTOLERANCEPERCENT sy-vline 
WA_PFITAXCODE_STR-EUACQNINPUTTAXCODE sy-vline 
WA_PFITAXCODE_STR-EUACQNOUTPUTTAXCODE sy-vline 
WA_PFITAXCODE_STR-MOSSTAXCODE sy-vline      INTO ld_text SEPARATED BY SPACE.

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