ABAP Select data from SAP table TAX_UPDATE_ITEM_TO into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TAX_UPDATE_ITEM_TO
*  INTO TABLE @DATA(IT_TAX_UPDATE_ITEM_TO2).
*--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_TAX_UPDATE_ITEM_TO INDEX 1 INTO DATA(WA_TAX_UPDATE_ITEM_TO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TAX_UPDATE_ITEM_TO>-CONTROLLER = 1.
<TAX_UPDATE_ITEM_TO>-TAX_ITEM_TO = 1.
<TAX_UPDATE_ITEM_TO>-CONTROLLER = 1.
<TAX_UPDATE_ITEM_TO>-ITEM_NUMBER = 1.
<TAX_UPDATE_ITEM_TO>-POSITION_NUMBER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TAX_UPDATE_ITEM_TO-GROUP_ID, sy-vline,
  WA_TAX_UPDATE_ITEM_TO-COUNTRY, sy-vline,
  WA_TAX_UPDATE_ITEM_TO-DIVISION, sy-vline,
  WA_TAX_UPDATE_ITEM_TO-MATERIAL_NUMBER, sy-vline,
  WA_TAX_UPDATE_ITEM_TO-PRODUCT_CODE, sy-vline,
  WA_TAX_UPDATE_ITEM_TO-GROUP_PRODUCT_CODE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TAX_UPDATE_ITEM_TO 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_TAX_UPDATE_ITEM_TO 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_TAX_UPDATE_ITEM_TO INTO WA_TAX_UPDATE_ITEM_TO.


*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_TAX_UPDATE_ITEM_TO_STR, 
CONTROLLER TYPE STRING,
TAX_ITEM_TO TYPE STRING,
CONTROLLER TYPE STRING,
ITEM_NUMBER TYPE STRING,
POSITION_NUMBER TYPE STRING,
GROUP_ID TYPE STRING,
COUNTRY TYPE STRING,
DIVISION TYPE STRING,
MATERIAL_NUMBER TYPE STRING,
PRODUCT_CODE TYPE STRING,
GROUP_PRODUCT_CODE TYPE STRING,
QUANTITY TYPE STRING,
UNIT TYPE STRING,
APARINDICATOR TYPE STRING,
TAX_TYPE TYPE STRING,
EXEMPT_INDICATOR TYPE STRING,
TAX_DATE TYPE STRING,
JURIDICTION_CODE_ST TYPE STRING,
JURIDICTION_CODE_SF TYPE STRING,
JURIDICTION_CODE_POA TYPE STRING,
JURIDICTION_CODE_POO TYPE STRING,
AMOUNT TYPE STRING,
GROSS_AMOUNT TYPE STRING,
FREIGHT_AMOUNT TYPE STRING,
EXEMPT_AMOUNT TYPE STRING,
ACCOUNT_NUMBER TYPE STRING,
ACCOUNT_CLASS TYPE STRING,
COST_OBJECT TYPE STRING,
PTPINDICATOR TYPE STRING,
EXCERTIF TYPE STRING,
EXREASON TYPE STRING,
USER_DATA TYPE STRING,
REP_DATE TYPE STRING,
CREDIT_INDICATOR TYPE STRING,
STORE_CODE TYPE STRING,
USER_REPORTING_DATA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TAX_UPDATE_ITEM_TO_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_TAX_UPDATE_ITEM_TO_STR-CONTROLLER sy-vline 
WA_TAX_UPDATE_ITEM_TO_STR-TAX_ITEM_TO sy-vline 
WA_TAX_UPDATE_ITEM_TO_STR-CONTROLLER sy-vline 
WA_TAX_UPDATE_ITEM_TO_STR-ITEM_NUMBER sy-vline 
WA_TAX_UPDATE_ITEM_TO_STR-POSITION_NUMBER sy-vline 
WA_TAX_UPDATE_ITEM_TO_STR-GROUP_ID sy-vline 
WA_TAX_UPDATE_ITEM_TO_STR-COUNTRY sy-vline 
WA_TAX_UPDATE_ITEM_TO_STR-DIVISION sy-vline 
WA_TAX_UPDATE_ITEM_TO_STR-MATERIAL_NUMBER sy-vline 
WA_TAX_UPDATE_ITEM_TO_STR-PRODUCT_CODE sy-vline 
WA_TAX_UPDATE_ITEM_TO_STR-GROUP_PRODUCT_CODE sy-vline 
WA_TAX_UPDATE_ITEM_TO_STR-QUANTITY sy-vline 
WA_TAX_UPDATE_ITEM_TO_STR-UNIT sy-vline 
WA_TAX_UPDATE_ITEM_TO_STR-APARINDICATOR sy-vline 
WA_TAX_UPDATE_ITEM_TO_STR-TAX_TYPE sy-vline 
WA_TAX_UPDATE_ITEM_TO_STR-EXEMPT_INDICATOR sy-vline 
WA_TAX_UPDATE_ITEM_TO_STR-TAX_DATE sy-vline 
WA_TAX_UPDATE_ITEM_TO_STR-JURIDICTION_CODE_ST sy-vline 
WA_TAX_UPDATE_ITEM_TO_STR-JURIDICTION_CODE_SF sy-vline 
WA_TAX_UPDATE_ITEM_TO_STR-JURIDICTION_CODE_POA sy-vline 
WA_TAX_UPDATE_ITEM_TO_STR-JURIDICTION_CODE_POO sy-vline 
WA_TAX_UPDATE_ITEM_TO_STR-AMOUNT sy-vline 
WA_TAX_UPDATE_ITEM_TO_STR-GROSS_AMOUNT sy-vline 
WA_TAX_UPDATE_ITEM_TO_STR-FREIGHT_AMOUNT sy-vline 
WA_TAX_UPDATE_ITEM_TO_STR-EXEMPT_AMOUNT sy-vline 
WA_TAX_UPDATE_ITEM_TO_STR-ACCOUNT_NUMBER sy-vline 
WA_TAX_UPDATE_ITEM_TO_STR-ACCOUNT_CLASS sy-vline 
WA_TAX_UPDATE_ITEM_TO_STR-COST_OBJECT sy-vline 
WA_TAX_UPDATE_ITEM_TO_STR-PTPINDICATOR sy-vline 
WA_TAX_UPDATE_ITEM_TO_STR-EXCERTIF sy-vline 
WA_TAX_UPDATE_ITEM_TO_STR-EXREASON sy-vline 
WA_TAX_UPDATE_ITEM_TO_STR-USER_DATA sy-vline 
WA_TAX_UPDATE_ITEM_TO_STR-REP_DATE sy-vline 
WA_TAX_UPDATE_ITEM_TO_STR-CREDIT_INDICATOR sy-vline 
WA_TAX_UPDATE_ITEM_TO_STR-STORE_CODE sy-vline 
WA_TAX_UPDATE_ITEM_TO_STR-USER_REPORTING_DATA sy-vline      INTO ld_text SEPARATED BY SPACE.

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