ABAP Select data from SAP table FISK_S_TAXRETURN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FISK_S_TAXRETURN
*  INTO TABLE @DATA(IT_FISK_S_TAXRETURN2).
*--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_FISK_S_TAXRETURN INDEX 1 INTO DATA(WA_FISK_S_TAXRETURN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FISK_S_TAXRETURN>-ROW01 = 1.
<FISK_S_TAXRETURN>-ROW02 = 1.
<FISK_S_TAXRETURN>-ROW03 = 1.
<FISK_S_TAXRETURN>-ROW04 = 1.
<FISK_S_TAXRETURN>-ROW05 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FISK_S_TAXRETURN-ROW06, sy-vline,
  WA_FISK_S_TAXRETURN-ROW07, sy-vline,
  WA_FISK_S_TAXRETURN-ROW08, sy-vline,
  WA_FISK_S_TAXRETURN-ROW09, sy-vline,
  WA_FISK_S_TAXRETURN-ROW10, sy-vline,
  WA_FISK_S_TAXRETURN-ROW11, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FISK_S_TAXRETURN 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_FISK_S_TAXRETURN 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_FISK_S_TAXRETURN INTO WA_FISK_S_TAXRETURN.


*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_FISK_S_TAXRETURN_STR, 
ROW01 TYPE STRING,
ROW02 TYPE STRING,
ROW03 TYPE STRING,
ROW04 TYPE STRING,
ROW05 TYPE STRING,
ROW06 TYPE STRING,
ROW07 TYPE STRING,
ROW08 TYPE STRING,
ROW09 TYPE STRING,
ROW10 TYPE STRING,
ROW11 TYPE STRING,
ROW12 TYPE STRING,
ROW13 TYPE STRING,
ROW14 TYPE STRING,
ROW15 TYPE STRING,
ROW16 TYPE STRING,
ROW17 TYPE STRING,
ROW18 TYPE STRING,
ROW19 TYPE STRING,
ROW20 TYPE STRING,
ROW21 TYPE STRING,
ROW22 TYPE STRING,
ROW23 TYPE STRING,
ROW24 TYPE STRING,
ROW25 TYPE STRING,
ROW26 TYPE STRING,
ROW27 TYPE STRING,
ROW28 TYPE STRING,
ROW29 TYPE STRING,
ROW30 TYPE STRING,
ROW31 TYPE STRING,
TRUE_COND TYPE STRING,
ROW32 TYPE STRING,
ROW33 TYPE STRING,
ROW34 TYPE STRING,
ROW35 TYPE STRING,
ROW36 TYPE STRING,
ROW37 TYPE STRING,
ROW38 TYPE STRING,
ROW39 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FISK_S_TAXRETURN_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_FISK_S_TAXRETURN_STR-ROW01 sy-vline 
WA_FISK_S_TAXRETURN_STR-ROW02 sy-vline 
WA_FISK_S_TAXRETURN_STR-ROW03 sy-vline 
WA_FISK_S_TAXRETURN_STR-ROW04 sy-vline 
WA_FISK_S_TAXRETURN_STR-ROW05 sy-vline 
WA_FISK_S_TAXRETURN_STR-ROW06 sy-vline 
WA_FISK_S_TAXRETURN_STR-ROW07 sy-vline 
WA_FISK_S_TAXRETURN_STR-ROW08 sy-vline 
WA_FISK_S_TAXRETURN_STR-ROW09 sy-vline 
WA_FISK_S_TAXRETURN_STR-ROW10 sy-vline 
WA_FISK_S_TAXRETURN_STR-ROW11 sy-vline 
WA_FISK_S_TAXRETURN_STR-ROW12 sy-vline 
WA_FISK_S_TAXRETURN_STR-ROW13 sy-vline 
WA_FISK_S_TAXRETURN_STR-ROW14 sy-vline 
WA_FISK_S_TAXRETURN_STR-ROW15 sy-vline 
WA_FISK_S_TAXRETURN_STR-ROW16 sy-vline 
WA_FISK_S_TAXRETURN_STR-ROW17 sy-vline 
WA_FISK_S_TAXRETURN_STR-ROW18 sy-vline 
WA_FISK_S_TAXRETURN_STR-ROW19 sy-vline 
WA_FISK_S_TAXRETURN_STR-ROW20 sy-vline 
WA_FISK_S_TAXRETURN_STR-ROW21 sy-vline 
WA_FISK_S_TAXRETURN_STR-ROW22 sy-vline 
WA_FISK_S_TAXRETURN_STR-ROW23 sy-vline 
WA_FISK_S_TAXRETURN_STR-ROW24 sy-vline 
WA_FISK_S_TAXRETURN_STR-ROW25 sy-vline 
WA_FISK_S_TAXRETURN_STR-ROW26 sy-vline 
WA_FISK_S_TAXRETURN_STR-ROW27 sy-vline 
WA_FISK_S_TAXRETURN_STR-ROW28 sy-vline 
WA_FISK_S_TAXRETURN_STR-ROW29 sy-vline 
WA_FISK_S_TAXRETURN_STR-ROW30 sy-vline 
WA_FISK_S_TAXRETURN_STR-ROW31 sy-vline 
WA_FISK_S_TAXRETURN_STR-TRUE_COND sy-vline 
WA_FISK_S_TAXRETURN_STR-ROW32 sy-vline 
WA_FISK_S_TAXRETURN_STR-ROW33 sy-vline 
WA_FISK_S_TAXRETURN_STR-ROW34 sy-vline 
WA_FISK_S_TAXRETURN_STR-ROW35 sy-vline 
WA_FISK_S_TAXRETURN_STR-ROW36 sy-vline 
WA_FISK_S_TAXRETURN_STR-ROW37 sy-vline 
WA_FISK_S_TAXRETURN_STR-ROW38 sy-vline 
WA_FISK_S_TAXRETURN_STR-ROW39 sy-vline      INTO ld_text SEPARATED BY SPACE.

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