ABAP Select data from SAP table V_VIITTCCALC_DS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_VIITTCCALC_DS
*  INTO TABLE @DATA(IT_V_VIITTCCALC_DS2).
*--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_V_VIITTCCALC_DS INDEX 1 INTO DATA(WA_V_VIITTCCALC_DS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_VIITTCCALC_DS>-MANDT = 1.
<V_VIITTCCALC_DS>-CALCGUID = 1.
<V_VIITTCCALC_DS>-INTRENO = 1.
<V_VIITTCCALC_DS>-TCCALCTYPE = 1.
<V_VIITTCCALC_DS>-TCYEAR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_VIITTCCALC_DS-TCKEYDATE, sy-vline,
  WA_V_VIITTCCALC_DS-PROCESSGUID, sy-vline,
  WA_V_VIITTCCALC_DS-REFDOCGUID, sy-vline,
  WA_V_VIITTCCALC_DS-REVID, sy-vline,
  WA_V_VIITTCCALC_DS-TAXCODE, sy-vline,
  WA_V_VIITTCCALC_DS-CURRENCY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_VIITTCCALC_DS 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_V_VIITTCCALC_DS 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_V_VIITTCCALC_DS INTO WA_V_VIITTCCALC_DS.


*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_V_VIITTCCALC_DS_STR, 
MANDT TYPE STRING,
CALCGUID TYPE STRING,
INTRENO TYPE STRING,
TCCALCTYPE TYPE STRING,
TCYEAR TYPE STRING,
TCKEYDATE TYPE STRING,
PROCESSGUID TYPE STRING,
REFDOCGUID TYPE STRING,
REVID TYPE STRING,
TAXCODE TYPE STRING,
CURRENCY TYPE STRING,
BASENETAMOUNT TYPE STRING,
BASETAXAMOUNT TYPE STRING,
BASEDEDTAXAMT TYPE STRING,
BASENONDEDTAXAMT TYPE STRING,
CALCDEDTAXAMT TYPE STRING,
CALCNONDEDTAXAMT TYPE STRING,
CALCOPTRATE TYPE STRING,
TCCALCYEARAMOUNT TYPE STRING,
TCCALCAMOUNT TYPE STRING,
TCPOSTAMOUNT TYPE STRING,
MINAMTLIMIT TYPE STRING,
ISEXTDATA TYPE STRING,
CALCRESULTGUID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_VIITTCCALC_DS_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_V_VIITTCCALC_DS_STR-MANDT sy-vline 
WA_V_VIITTCCALC_DS_STR-CALCGUID sy-vline 
WA_V_VIITTCCALC_DS_STR-INTRENO sy-vline 
WA_V_VIITTCCALC_DS_STR-TCCALCTYPE sy-vline 
WA_V_VIITTCCALC_DS_STR-TCYEAR sy-vline 
WA_V_VIITTCCALC_DS_STR-TCKEYDATE sy-vline 
WA_V_VIITTCCALC_DS_STR-PROCESSGUID sy-vline 
WA_V_VIITTCCALC_DS_STR-REFDOCGUID sy-vline 
WA_V_VIITTCCALC_DS_STR-REVID sy-vline 
WA_V_VIITTCCALC_DS_STR-TAXCODE sy-vline 
WA_V_VIITTCCALC_DS_STR-CURRENCY sy-vline 
WA_V_VIITTCCALC_DS_STR-BASENETAMOUNT sy-vline 
WA_V_VIITTCCALC_DS_STR-BASETAXAMOUNT sy-vline 
WA_V_VIITTCCALC_DS_STR-BASEDEDTAXAMT sy-vline 
WA_V_VIITTCCALC_DS_STR-BASENONDEDTAXAMT sy-vline 
WA_V_VIITTCCALC_DS_STR-CALCDEDTAXAMT sy-vline 
WA_V_VIITTCCALC_DS_STR-CALCNONDEDTAXAMT sy-vline 
WA_V_VIITTCCALC_DS_STR-CALCOPTRATE sy-vline 
WA_V_VIITTCCALC_DS_STR-TCCALCYEARAMOUNT sy-vline 
WA_V_VIITTCCALC_DS_STR-TCCALCAMOUNT sy-vline 
WA_V_VIITTCCALC_DS_STR-TCPOSTAMOUNT sy-vline 
WA_V_VIITTCCALC_DS_STR-MINAMTLIMIT sy-vline 
WA_V_VIITTCCALC_DS_STR-ISEXTDATA sy-vline 
WA_V_VIITTCCALC_DS_STR-CALCRESULTGUID sy-vline      INTO ld_text SEPARATED BY SPACE.

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