ABAP Select data from SAP table P2RK_TAX1 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P2RK_TAX1 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 P2RK_TAX1. 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 P2RK_TAX1 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_P2RK_TAX1 TYPE STANDARD TABLE OF P2RK_TAX1,
      WA_P2RK_TAX1 TYPE P2RK_TAX1,
      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: <P2RK_TAX1> TYPE P2RK_TAX1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P2RK_TAX1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P2RK_TAX1
  INTO TABLE IT_P2RK_TAX1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P2RK_TAX1
*  INTO TABLE @DATA(IT_P2RK_TAX12).
*--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_P2RK_TAX1 INDEX 1 INTO DATA(WA_P2RK_TAX12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P2RK_TAX1 ASSIGNING <P2RK_TAX1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P2RK_TAX1>-MANDT = 1.
<P2RK_TAX1>-DCT_PERNR = 1.
<P2RK_TAX1>-DCT_SEQNR = 1.
<P2RK_TAX1>-DCT_ROWID = 1.
<P2RK_TAX1>-CNTR1 = 1.

ENDLOOP.

LOOP AT IT_P2RK_TAX1 INTO WA_P2RK_TAX1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P2RK_TAX1-BEGDA, sy-vline,
  WA_P2RK_TAX1-ENDDA, sy-vline,
  WA_P2RK_TAX1-STAT2, sy-vline,
  WA_P2RK_TAX1-WRKAR, sy-vline,
  WA_P2RK_TAX1-RESAR, sy-vline,
  WA_P2RK_TAX1-RCITY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P2RK_TAX1 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_P2RK_TAX1 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_P2RK_TAX1 INTO WA_P2RK_TAX1.


*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_P2RK_TAX1_STR, 
MANDT TYPE STRING,
DCT_PERNR TYPE STRING,
DCT_SEQNR TYPE STRING,
DCT_ROWID TYPE STRING,
CNTR1 TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
STAT2 TYPE STRING,
WRKAR TYPE STRING,
RESAR TYPE STRING,
RCITY TYPE STRING,
REGNR TYPE STRING,
ACNBF TYPE STRING,
CGSTN TYPE STRING,
OPTIO TYPE STRING,
TOTCR TYPE STRING,
CLAIM TYPE STRING,
TNIND TYPE STRING,
ADDTX TYPE STRING,
TEXHD TYPE STRING,
NODEP TYPE STRING,
NODIS TYPE STRING,
MNTDE TYPE STRING,
OTXCR TYPE STRING,
LBTCR TYPE STRING,
CRTDE TYPE STRING,
COMRE TYPE STRING,
COMEX TYPE STRING,
QCTXI TYPE STRING,
QGSTN TYPE STRING,
TOTCQ TYPE STRING,
CLAQC TYPE STRING,
ADDTQ TYPE STRING,
OTHDE TYPE STRING,
OTXCQ TYPE STRING,
OTADE TYPE STRING,
COMEQ TYPE STRING,
MARRD TYPE STRING,
LSTPY TYPE STRING,
PROVR TYPE STRING,
WNSBN TYPE STRING,
TOTCP TYPE STRING,
OTXCP TYPE STRING,
LBTCP TYPE STRING,
PVTAX TYPE STRING,
PHLTH TYPE STRING,
BPA TYPE STRING,
BPA_FROM_TD1 TYPE STRING,
BPAP TYPE STRING,
BPA_FROM_TD1P TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P2RK_TAX1_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_P2RK_TAX1_STR-MANDT sy-vline 
WA_P2RK_TAX1_STR-DCT_PERNR sy-vline 
WA_P2RK_TAX1_STR-DCT_SEQNR sy-vline 
WA_P2RK_TAX1_STR-DCT_ROWID sy-vline 
WA_P2RK_TAX1_STR-CNTR1 sy-vline 
WA_P2RK_TAX1_STR-BEGDA sy-vline 
WA_P2RK_TAX1_STR-ENDDA sy-vline 
WA_P2RK_TAX1_STR-STAT2 sy-vline 
WA_P2RK_TAX1_STR-WRKAR sy-vline 
WA_P2RK_TAX1_STR-RESAR sy-vline 
WA_P2RK_TAX1_STR-RCITY sy-vline 
WA_P2RK_TAX1_STR-REGNR sy-vline 
WA_P2RK_TAX1_STR-ACNBF sy-vline 
WA_P2RK_TAX1_STR-CGSTN sy-vline 
WA_P2RK_TAX1_STR-OPTIO sy-vline 
WA_P2RK_TAX1_STR-TOTCR sy-vline 
WA_P2RK_TAX1_STR-CLAIM sy-vline 
WA_P2RK_TAX1_STR-TNIND sy-vline 
WA_P2RK_TAX1_STR-ADDTX sy-vline 
WA_P2RK_TAX1_STR-TEXHD sy-vline 
WA_P2RK_TAX1_STR-NODEP sy-vline 
WA_P2RK_TAX1_STR-NODIS sy-vline 
WA_P2RK_TAX1_STR-MNTDE sy-vline 
WA_P2RK_TAX1_STR-OTXCR sy-vline 
WA_P2RK_TAX1_STR-LBTCR sy-vline 
WA_P2RK_TAX1_STR-CRTDE sy-vline 
WA_P2RK_TAX1_STR-COMRE sy-vline 
WA_P2RK_TAX1_STR-COMEX sy-vline 
WA_P2RK_TAX1_STR-QCTXI sy-vline 
WA_P2RK_TAX1_STR-QGSTN sy-vline 
WA_P2RK_TAX1_STR-TOTCQ sy-vline 
WA_P2RK_TAX1_STR-CLAQC sy-vline 
WA_P2RK_TAX1_STR-ADDTQ sy-vline 
WA_P2RK_TAX1_STR-OTHDE sy-vline 
WA_P2RK_TAX1_STR-OTXCQ sy-vline 
WA_P2RK_TAX1_STR-OTADE sy-vline 
WA_P2RK_TAX1_STR-COMEQ sy-vline 
WA_P2RK_TAX1_STR-MARRD sy-vline 
WA_P2RK_TAX1_STR-LSTPY sy-vline 
WA_P2RK_TAX1_STR-PROVR sy-vline 
WA_P2RK_TAX1_STR-WNSBN sy-vline 
WA_P2RK_TAX1_STR-TOTCP sy-vline 
WA_P2RK_TAX1_STR-OTXCP sy-vline 
WA_P2RK_TAX1_STR-LBTCP sy-vline 
WA_P2RK_TAX1_STR-PVTAX sy-vline 
WA_P2RK_TAX1_STR-PHLTH sy-vline 
WA_P2RK_TAX1_STR-BPA sy-vline 
WA_P2RK_TAX1_STR-BPA_FROM_TD1 sy-vline 
WA_P2RK_TAX1_STR-BPAP sy-vline 
WA_P2RK_TAX1_STR-BPA_FROM_TD1P sy-vline      INTO ld_text SEPARATED BY SPACE.

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