ABAP Select data from SAP table PCN_FORM_YEA_TAX into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PCN_FORM_YEA_TAX
*  INTO TABLE @DATA(IT_PCN_FORM_YEA_TAX2).
*--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_PCN_FORM_YEA_TAX INDEX 1 INTO DATA(WA_PCN_FORM_YEA_TAX2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PCN_FORM_YEA_TAX>-CNAME = 1.
<PCN_FORM_YEA_TAX>-ICNUM = 1.
<PCN_FORM_YEA_TAX>-TXYEA = 1.
<PCN_FORM_YEA_TAX>-TXMON = 1.
<PCN_FORM_YEA_TAX>-TELNO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PCN_FORM_YEA_TAX-EMAIL, sy-vline,
  WA_PCN_FORM_YEA_TAX-POSTCODE, sy-vline,
  WA_PCN_FORM_YEA_TAX-PROVINCE, sy-vline,
  WA_PCN_FORM_YEA_TAX-CITY, sy-vline,
  WA_PCN_FORM_YEA_TAX-DISTRICT, sy-vline,
  WA_PCN_FORM_YEA_TAX-STREET, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PCN_FORM_YEA_TAX 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_PCN_FORM_YEA_TAX 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_PCN_FORM_YEA_TAX INTO WA_PCN_FORM_YEA_TAX.


*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 TXYEA
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_PCN_FORM_YEA_TAX-TXYEA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PCN_FORM_YEA_TAX-TXYEA.
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_PCN_FORM_YEA_TAX_STR, 
CNAME TYPE STRING,
ICNUM TYPE STRING,
TXYEA TYPE STRING,
TXMON TYPE STRING,
TELNO TYPE STRING,
EMAIL TYPE STRING,
POSTCODE TYPE STRING,
PROVINCE TYPE STRING,
CITY TYPE STRING,
DISTRICT TYPE STRING,
STREET TYPE STRING,
DETAIL TYPE STRING,
ENTXI TYPE STRING,
TAXGPT TYPE STRING,
WAERS TYPE STRING,
SAL_INC TYPE STRING,
RPS_INC TYPE STRING,
AUTHOR_INC TYPE STRING,
ROYALTY_INC TYPE STRING,
AUTHOR_EXMP TYPE STRING,
OTHER_EXMP TYPE STRING,
PINEE TYPE STRING,
MINEE TYPE STRING,
UINEE TYPE STRING,
PHFEE TYPE STRING,
CHILD_EDU TYPE STRING,
CONTIN_EDU TYPE STRING,
SERIOUS_ILL TYPE STRING,
HOUSE_LOAN TYPE STRING,
HOUSE_RENT TYPE STRING,
ELD_CARE TYPE STRING,
CORP_PEN TYPE STRING,
COMMERC_HLTH_INSUR TYPE STRING,
COMMERC_PENSN_INSUR TYPE STRING,
DEDTBL_EXPN TYPE STRING,
OTH_DEDUCT TYPE STRING,
DEDTBL_DONAT TYPE STRING,
COMP_TAX_REDUCT TYPE STRING,
COMP_TAX_PAID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PCN_FORM_YEA_TAX_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_PCN_FORM_YEA_TAX_STR-CNAME sy-vline 
WA_PCN_FORM_YEA_TAX_STR-ICNUM sy-vline 
WA_PCN_FORM_YEA_TAX_STR-TXYEA sy-vline 
WA_PCN_FORM_YEA_TAX_STR-TXMON sy-vline 
WA_PCN_FORM_YEA_TAX_STR-TELNO sy-vline 
WA_PCN_FORM_YEA_TAX_STR-EMAIL sy-vline 
WA_PCN_FORM_YEA_TAX_STR-POSTCODE sy-vline 
WA_PCN_FORM_YEA_TAX_STR-PROVINCE sy-vline 
WA_PCN_FORM_YEA_TAX_STR-CITY sy-vline 
WA_PCN_FORM_YEA_TAX_STR-DISTRICT sy-vline 
WA_PCN_FORM_YEA_TAX_STR-STREET sy-vline 
WA_PCN_FORM_YEA_TAX_STR-DETAIL sy-vline 
WA_PCN_FORM_YEA_TAX_STR-ENTXI sy-vline 
WA_PCN_FORM_YEA_TAX_STR-TAXGPT sy-vline 
WA_PCN_FORM_YEA_TAX_STR-WAERS sy-vline 
WA_PCN_FORM_YEA_TAX_STR-SAL_INC sy-vline 
WA_PCN_FORM_YEA_TAX_STR-RPS_INC sy-vline 
WA_PCN_FORM_YEA_TAX_STR-AUTHOR_INC sy-vline 
WA_PCN_FORM_YEA_TAX_STR-ROYALTY_INC sy-vline 
WA_PCN_FORM_YEA_TAX_STR-AUTHOR_EXMP sy-vline 
WA_PCN_FORM_YEA_TAX_STR-OTHER_EXMP sy-vline 
WA_PCN_FORM_YEA_TAX_STR-PINEE sy-vline 
WA_PCN_FORM_YEA_TAX_STR-MINEE sy-vline 
WA_PCN_FORM_YEA_TAX_STR-UINEE sy-vline 
WA_PCN_FORM_YEA_TAX_STR-PHFEE sy-vline 
WA_PCN_FORM_YEA_TAX_STR-CHILD_EDU sy-vline 
WA_PCN_FORM_YEA_TAX_STR-CONTIN_EDU sy-vline 
WA_PCN_FORM_YEA_TAX_STR-SERIOUS_ILL sy-vline 
WA_PCN_FORM_YEA_TAX_STR-HOUSE_LOAN sy-vline 
WA_PCN_FORM_YEA_TAX_STR-HOUSE_RENT sy-vline 
WA_PCN_FORM_YEA_TAX_STR-ELD_CARE sy-vline 
WA_PCN_FORM_YEA_TAX_STR-CORP_PEN sy-vline 
WA_PCN_FORM_YEA_TAX_STR-COMMERC_HLTH_INSUR sy-vline 
WA_PCN_FORM_YEA_TAX_STR-COMMERC_PENSN_INSUR sy-vline 
WA_PCN_FORM_YEA_TAX_STR-DEDTBL_EXPN sy-vline 
WA_PCN_FORM_YEA_TAX_STR-OTH_DEDUCT sy-vline 
WA_PCN_FORM_YEA_TAX_STR-DEDTBL_DONAT sy-vline 
WA_PCN_FORM_YEA_TAX_STR-COMP_TAX_REDUCT sy-vline 
WA_PCN_FORM_YEA_TAX_STR-COMP_TAX_PAID sy-vline      INTO ld_text SEPARATED BY SPACE.

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