ABAP Select data from SAP table P2IE_IETAX into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P2IE_IETAX 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 P2IE_IETAX. 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 P2IE_IETAX 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_P2IE_IETAX TYPE STANDARD TABLE OF P2IE_IETAX,
      WA_P2IE_IETAX TYPE P2IE_IETAX,
      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: <P2IE_IETAX> TYPE P2IE_IETAX.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P2IE_IETAX.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P2IE_IETAX
  INTO TABLE IT_P2IE_IETAX.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P2IE_IETAX
*  INTO TABLE @DATA(IT_P2IE_IETAX2).
*--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_P2IE_IETAX INDEX 1 INTO DATA(WA_P2IE_IETAX2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P2IE_IETAX ASSIGNING <P2IE_IETAX>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P2IE_IETAX>-MANDT = 1.
<P2IE_IETAX>-DCT_PERNR = 1.
<P2IE_IETAX>-DCT_SEQNR = 1.
<P2IE_IETAX>-BEGDA = 1.
<P2IE_IETAX>-ENDDA = 1.

ENDLOOP.

LOOP AT IT_P2IE_IETAX INTO WA_P2IE_IETAX.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P2IE_IETAX-TXBAS, sy-vline,
  WA_P2IE_IETAX-TXTBL, sy-vline,
  WA_P2IE_IETAX-TXRFS, sy-vline,
  WA_P2IE_IETAX-TXSTK, sy-vline,
  WA_P2IE_IETAX-P45PY, sy-vline,
  WA_P2IE_IETAX-P45TX, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P2IE_IETAX 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_P2IE_IETAX 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_P2IE_IETAX INTO WA_P2IE_IETAX.


*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_P2IE_IETAX_STR, 
MANDT TYPE STRING,
DCT_PERNR TYPE STRING,
DCT_SEQNR TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
TXBAS TYPE STRING,
TXTBL TYPE STRING,
TXRFS TYPE STRING,
TXSTK TYPE STRING,
P45PY TYPE STRING,
P45TX TYPE STRING,
P45WK TYPE STRING,
P45MN TYPE STRING,
P45TF TYPE STRING,
TFAWK TYPE STRING,
WKSEM TYPE STRING,
MTHEM TYPE STRING,
WAERS TYPE STRING,
ERNIE TYPE STRING,
RPNNO TYPE STRING,
RPNID TYPE STRING,
EMPID TYPE STRING,
EXORD TYPE STRING,
SOURCE TYPE STRING,
TFAYR TYPE STRING,
TRAT1 TYPE STRING,
CUTOF TYPE STRING,
TRAT2 TYPE STRING,
LPTAX TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P2IE_IETAX_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_P2IE_IETAX_STR-MANDT sy-vline 
WA_P2IE_IETAX_STR-DCT_PERNR sy-vline 
WA_P2IE_IETAX_STR-DCT_SEQNR sy-vline 
WA_P2IE_IETAX_STR-BEGDA sy-vline 
WA_P2IE_IETAX_STR-ENDDA sy-vline 
WA_P2IE_IETAX_STR-TXBAS sy-vline 
WA_P2IE_IETAX_STR-TXTBL sy-vline 
WA_P2IE_IETAX_STR-TXRFS sy-vline 
WA_P2IE_IETAX_STR-TXSTK sy-vline 
WA_P2IE_IETAX_STR-P45PY sy-vline 
WA_P2IE_IETAX_STR-P45TX sy-vline 
WA_P2IE_IETAX_STR-P45WK sy-vline 
WA_P2IE_IETAX_STR-P45MN sy-vline 
WA_P2IE_IETAX_STR-P45TF sy-vline 
WA_P2IE_IETAX_STR-TFAWK sy-vline 
WA_P2IE_IETAX_STR-WKSEM sy-vline 
WA_P2IE_IETAX_STR-MTHEM sy-vline 
WA_P2IE_IETAX_STR-WAERS sy-vline 
WA_P2IE_IETAX_STR-ERNIE sy-vline 
WA_P2IE_IETAX_STR-RPNNO sy-vline 
WA_P2IE_IETAX_STR-RPNID sy-vline 
WA_P2IE_IETAX_STR-EMPID sy-vline 
WA_P2IE_IETAX_STR-EXORD sy-vline 
WA_P2IE_IETAX_STR-SOURCE sy-vline 
WA_P2IE_IETAX_STR-TFAYR sy-vline 
WA_P2IE_IETAX_STR-TRAT1 sy-vline 
WA_P2IE_IETAX_STR-CUTOF sy-vline 
WA_P2IE_IETAX_STR-TRAT2 sy-vline 
WA_P2IE_IETAX_STR-LPTAX sy-vline      INTO ld_text SEPARATED BY SPACE.

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