ABAP Select data from SAP table T7RU2NDFL into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T7RU2NDFL 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 T7RU2NDFL. 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 T7RU2NDFL 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_T7RU2NDFL TYPE STANDARD TABLE OF T7RU2NDFL,
      WA_T7RU2NDFL TYPE T7RU2NDFL,
      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: <T7RU2NDFL> TYPE T7RU2NDFL.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T7RU2NDFL.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T7RU2NDFL
  INTO TABLE IT_T7RU2NDFL.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T7RU2NDFL
*  INTO TABLE @DATA(IT_T7RU2NDFL2).
*--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_T7RU2NDFL INDEX 1 INTO DATA(WA_T7RU2NDFL2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T7RU2NDFL ASSIGNING <T7RU2NDFL>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T7RU2NDFL>-MANDT = 1.
<T7RU2NDFL>-DATUM = 1.
<T7RU2NDFL>-UZEIT = 1.
<T7RU2NDFL>-DOCDT = 1.
<T7RU2NDFL>-INNUL = 1.

ENDLOOP.

LOOP AT IT_T7RU2NDFL INTO WA_T7RU2NDFL.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T7RU2NDFL-KPP00, sy-vline,
  WA_T7RU2NDFL-OKATO, sy-vline,
  WA_T7RU2NDFL-DOCTY, sy-vline,
  WA_T7RU2NDFL-NYEAR, sy-vline,
  WA_T7RU2NDFL-PERNR, sy-vline,
  WA_T7RU2NDFL-DOCID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T7RU2NDFL 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_T7RU2NDFL 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_T7RU2NDFL INTO WA_T7RU2NDFL.


*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_T7RU2NDFL_STR, 
MANDT TYPE STRING,
DATUM TYPE STRING,
UZEIT TYPE STRING,
DOCDT TYPE STRING,
INNUL TYPE STRING,
KPP00 TYPE STRING,
OKATO TYPE STRING,
DOCTY TYPE STRING,
NYEAR TYPE STRING,
PERNR TYPE STRING,
DOCID TYPE STRING,
TAX_RATE TYPE STRING,
TAX_BASE TYPE STRING,
TAX_DEDUCT TYPE STRING,
TAX_REST TYPE STRING,
TAX_CALC TYPE STRING,
TAX_HOLD TYPE STRING,
DEBT_AGENT TYPE STRING,
DEBT_PAYER TYPE STRING,
DEBT_LEVY TYPE STRING,
TAX_TRANSF TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T7RU2NDFL_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_T7RU2NDFL_STR-MANDT sy-vline 
WA_T7RU2NDFL_STR-DATUM sy-vline 
WA_T7RU2NDFL_STR-UZEIT sy-vline 
WA_T7RU2NDFL_STR-DOCDT sy-vline 
WA_T7RU2NDFL_STR-INNUL sy-vline 
WA_T7RU2NDFL_STR-KPP00 sy-vline 
WA_T7RU2NDFL_STR-OKATO sy-vline 
WA_T7RU2NDFL_STR-DOCTY sy-vline 
WA_T7RU2NDFL_STR-NYEAR sy-vline 
WA_T7RU2NDFL_STR-PERNR sy-vline 
WA_T7RU2NDFL_STR-DOCID sy-vline 
WA_T7RU2NDFL_STR-TAX_RATE sy-vline 
WA_T7RU2NDFL_STR-TAX_BASE sy-vline 
WA_T7RU2NDFL_STR-TAX_DEDUCT sy-vline 
WA_T7RU2NDFL_STR-TAX_REST sy-vline 
WA_T7RU2NDFL_STR-TAX_CALC sy-vline 
WA_T7RU2NDFL_STR-TAX_HOLD sy-vline 
WA_T7RU2NDFL_STR-DEBT_AGENT sy-vline 
WA_T7RU2NDFL_STR-DEBT_PAYER sy-vline 
WA_T7RU2NDFL_STR-DEBT_LEVY sy-vline 
WA_T7RU2NDFL_STR-TAX_TRANSF sy-vline      INTO ld_text SEPARATED BY SPACE.

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