ABAP Select data from SAP table V_VISCDIST_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_VISCDIST_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_VISCDIST_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_VISCDIST_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_VISCDIST_DS TYPE STANDARD TABLE OF V_VISCDIST_DS,
      WA_V_VISCDIST_DS TYPE V_VISCDIST_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_VISCDIST_DS> TYPE V_VISCDIST_DS.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_VISCDIST_DS
*  INTO TABLE @DATA(IT_V_VISCDIST_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_VISCDIST_DS INDEX 1 INTO DATA(WA_V_VISCDIST_DS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_VISCDIST_DS>-MANDT = 1.
<V_VISCDIST_DS>-SETTL_GUID = 1.
<V_VISCDIST_DS>-SETTL_LEVEL = 1.
<V_VISCDIST_DS>-SETTLOBJ_GUID = 1.
<V_VISCDIST_DS>-COSTACCOUNT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_VISCDIST_DS-TAXACCOUNT, sy-vline,
  WA_V_VISCDIST_DS-TAXTYPE, sy-vline,
  WA_V_VISCDIST_DS-TAXGROUP, sy-vline,
  WA_V_VISCDIST_DS-OBJTYPE, sy-vline,
  WA_V_VISCDIST_DS-OBJNR, sy-vline,
  WA_V_VISCDIST_DS-CURRENCY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_VISCDIST_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_VISCDIST_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_VISCDIST_DS INTO WA_V_VISCDIST_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_VISCDIST_DS_STR, 
MANDT TYPE STRING,
SETTL_GUID TYPE STRING,
SETTL_LEVEL TYPE STRING,
SETTLOBJ_GUID TYPE STRING,
COSTACCOUNT TYPE STRING,
TAXACCOUNT TYPE STRING,
TAXTYPE TYPE STRING,
TAXGROUP TYPE STRING,
OBJTYPE TYPE STRING,
OBJNR TYPE STRING,
CURRENCY TYPE STRING,
NET_AMOUNT TYPE STRING,
TAX_AMOUNT TYPE STRING,
DEDUCT_TAX TYPE STRING,
NONDEDUCT_TAX TYPE STRING,
COSTDISTGUID TYPE STRING,
COSTGUID TYPE STRING,
OBJGUIDSRC TYPE STRING,
OBJGUIDTRG TYPE STRING,
TYPESRC TYPE STRING,
TYPETRG TYPE STRING,
NETAMOUNT TYPE STRING,
NONDEDTAXAMT TYPE STRING,
DEDTAXAMOUNT TYPE STRING,
APPORTVALSRC TYPE STRING,
APPORTVALOPTSRC TYPE STRING,
APPORTVALTRG TYPE STRING,
APPORTVALOPTTRG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_VISCDIST_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_VISCDIST_DS_STR-MANDT sy-vline 
WA_V_VISCDIST_DS_STR-SETTL_GUID sy-vline 
WA_V_VISCDIST_DS_STR-SETTL_LEVEL sy-vline 
WA_V_VISCDIST_DS_STR-SETTLOBJ_GUID sy-vline 
WA_V_VISCDIST_DS_STR-COSTACCOUNT sy-vline 
WA_V_VISCDIST_DS_STR-TAXACCOUNT sy-vline 
WA_V_VISCDIST_DS_STR-TAXTYPE sy-vline 
WA_V_VISCDIST_DS_STR-TAXGROUP sy-vline 
WA_V_VISCDIST_DS_STR-OBJTYPE sy-vline 
WA_V_VISCDIST_DS_STR-OBJNR sy-vline 
WA_V_VISCDIST_DS_STR-CURRENCY sy-vline 
WA_V_VISCDIST_DS_STR-NET_AMOUNT sy-vline 
WA_V_VISCDIST_DS_STR-TAX_AMOUNT sy-vline 
WA_V_VISCDIST_DS_STR-DEDUCT_TAX sy-vline 
WA_V_VISCDIST_DS_STR-NONDEDUCT_TAX sy-vline 
WA_V_VISCDIST_DS_STR-COSTDISTGUID sy-vline 
WA_V_VISCDIST_DS_STR-COSTGUID sy-vline 
WA_V_VISCDIST_DS_STR-OBJGUIDSRC sy-vline 
WA_V_VISCDIST_DS_STR-OBJGUIDTRG sy-vline 
WA_V_VISCDIST_DS_STR-TYPESRC sy-vline 
WA_V_VISCDIST_DS_STR-TYPETRG sy-vline 
WA_V_VISCDIST_DS_STR-NETAMOUNT sy-vline 
WA_V_VISCDIST_DS_STR-NONDEDTAXAMT sy-vline 
WA_V_VISCDIST_DS_STR-DEDTAXAMOUNT sy-vline 
WA_V_VISCDIST_DS_STR-APPORTVALSRC sy-vline 
WA_V_VISCDIST_DS_STR-APPORTVALOPTSRC sy-vline 
WA_V_VISCDIST_DS_STR-APPORTVALTRG sy-vline 
WA_V_VISCDIST_DS_STR-APPORTVALOPTTRG sy-vline      INTO ld_text SEPARATED BY SPACE.

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