ABAP Select data from SAP table FKK_DUNVOL_ODATA_DUNVOLLIST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKK_DUNVOL_ODATA_DUNVOLLIST
*  INTO TABLE @DATA(IT_FKK_DUNVOL_ODATA_DUNVOLLIST2).
*--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_FKK_DUNVOL_ODATA_DUNVOLLIST INDEX 1 INTO DATA(WA_FKK_DUNVOL_ODATA_DUNVOLLIST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKK_DUNVOL_ODATA_DUNVOLLIST>-ODATA_KEY = 1.
<FKK_DUNVOL_ODATA_DUNVOLLIST>-FIRSTNAME = 1.
<FKK_DUNVOL_ODATA_DUNVOLLIST>-LASTNAME = 1.
<FKK_DUNVOL_ODATA_DUNVOLLIST>-BUSINESSPARTNERNAME = 1.
<FKK_DUNVOL_ODATA_DUNVOLLIST>-CADUNNINGPROCEDURE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKK_DUNVOL_ODATA_DUNVOLLIST-CADUNNINGPROCEDURENAME, sy-vline,
  WA_FKK_DUNVOL_ODATA_DUNVOLLIST-CADUNNINGLEVEL, sy-vline,
  WA_FKK_DUNVOL_ODATA_DUNVOLLIST-CADUNNINGLEVELNAME, sy-vline,
  WA_FKK_DUNVOL_ODATA_DUNVOLLIST-CAMASSRUNDATE, sy-vline,
  WA_FKK_DUNVOL_ODATA_DUNVOLLIST-CAMASSRUNID, sy-vline,
  WA_FKK_DUNVOL_ODATA_DUNVOLLIST-BUSINESSPARTNER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKK_DUNVOL_ODATA_DUNVOLLIST 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_FKK_DUNVOL_ODATA_DUNVOLLIST 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_FKK_DUNVOL_ODATA_DUNVOLLIST INTO WA_FKK_DUNVOL_ODATA_DUNVOLLIST.


*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.

*Conversion exit ALPHA, internal->external for field BUSINESSPARTNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKK_DUNVOL_ODATA_DUNVOLLIST-BUSINESSPARTNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKK_DUNVOL_ODATA_DUNVOLLIST-BUSINESSPARTNER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CONTRACTACCOUNT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKK_DUNVOL_ODATA_DUNVOLLIST-CONTRACTACCOUNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKK_DUNVOL_ODATA_DUNVOLLIST-CONTRACTACCOUNT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CACONTRACT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKK_DUNVOL_ODATA_DUNVOLLIST-CACONTRACT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKK_DUNVOL_ODATA_DUNVOLLIST-CACONTRACT.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_FKK_DUNVOL_ODATA_DUNVOLLIST_STR, 
ODATA_KEY TYPE STRING,
FIRSTNAME TYPE STRING,
LASTNAME TYPE STRING,
BUSINESSPARTNERNAME TYPE STRING,
CADUNNINGPROCEDURE TYPE STRING,
CADUNNINGPROCEDURENAME TYPE STRING,
CADUNNINGLEVEL TYPE STRING,
CADUNNINGLEVELNAME TYPE STRING,
CAMASSRUNDATE TYPE STRING,
CAMASSRUNID TYPE STRING,
BUSINESSPARTNER TYPE STRING,
CONTRACTACCOUNT TYPE STRING,
CADUNNINGCOUNTER TYPE STRING,
CASTANDARDCOMPANYCODE TYPE STRING,
COMPANYCODENAME TYPE STRING,
BUSINESSAREA TYPE STRING,
DIVISION TYPE STRING,
CAISSUEDATE TYPE STRING,
CADUNBALANCEINDSPCRCY TYPE STRING,
CADUNCHARGEAMOUNTINDSPCRCY TYPE STRING,
CADUNINTERESTAMOUNTINDSPCRCY TYPE STRING,
POSTALCODE TYPE STRING,
CONTRACTACCOUNTCATEGORY TYPE STRING,
CANUMBEROFDUNNINGNOTICES TYPE STRING,
DISPLAYCURRENCY TYPE STRING,
CACONTRACT TYPE STRING,
CASUBAPPLICATION TYPE STRING,
CASUBAPPLICATIONTEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKK_DUNVOL_ODATA_DUNVOLLIST_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_FKK_DUNVOL_ODATA_DUNVOLLIST_STR-ODATA_KEY sy-vline 
WA_FKK_DUNVOL_ODATA_DUNVOLLIST_STR-FIRSTNAME sy-vline 
WA_FKK_DUNVOL_ODATA_DUNVOLLIST_STR-LASTNAME sy-vline 
WA_FKK_DUNVOL_ODATA_DUNVOLLIST_STR-BUSINESSPARTNERNAME sy-vline 
WA_FKK_DUNVOL_ODATA_DUNVOLLIST_STR-CADUNNINGPROCEDURE sy-vline 
WA_FKK_DUNVOL_ODATA_DUNVOLLIST_STR-CADUNNINGPROCEDURENAME sy-vline 
WA_FKK_DUNVOL_ODATA_DUNVOLLIST_STR-CADUNNINGLEVEL sy-vline 
WA_FKK_DUNVOL_ODATA_DUNVOLLIST_STR-CADUNNINGLEVELNAME sy-vline 
WA_FKK_DUNVOL_ODATA_DUNVOLLIST_STR-CAMASSRUNDATE sy-vline 
WA_FKK_DUNVOL_ODATA_DUNVOLLIST_STR-CAMASSRUNID sy-vline 
WA_FKK_DUNVOL_ODATA_DUNVOLLIST_STR-BUSINESSPARTNER sy-vline 
WA_FKK_DUNVOL_ODATA_DUNVOLLIST_STR-CONTRACTACCOUNT sy-vline 
WA_FKK_DUNVOL_ODATA_DUNVOLLIST_STR-CADUNNINGCOUNTER sy-vline 
WA_FKK_DUNVOL_ODATA_DUNVOLLIST_STR-CASTANDARDCOMPANYCODE sy-vline 
WA_FKK_DUNVOL_ODATA_DUNVOLLIST_STR-COMPANYCODENAME sy-vline 
WA_FKK_DUNVOL_ODATA_DUNVOLLIST_STR-BUSINESSAREA sy-vline 
WA_FKK_DUNVOL_ODATA_DUNVOLLIST_STR-DIVISION sy-vline 
WA_FKK_DUNVOL_ODATA_DUNVOLLIST_STR-CAISSUEDATE sy-vline 
WA_FKK_DUNVOL_ODATA_DUNVOLLIST_STR-CADUNBALANCEINDSPCRCY sy-vline 
WA_FKK_DUNVOL_ODATA_DUNVOLLIST_STR-CADUNCHARGEAMOUNTINDSPCRCY sy-vline 
WA_FKK_DUNVOL_ODATA_DUNVOLLIST_STR-CADUNINTERESTAMOUNTINDSPCRCY sy-vline 
WA_FKK_DUNVOL_ODATA_DUNVOLLIST_STR-POSTALCODE sy-vline 
WA_FKK_DUNVOL_ODATA_DUNVOLLIST_STR-CONTRACTACCOUNTCATEGORY sy-vline 
WA_FKK_DUNVOL_ODATA_DUNVOLLIST_STR-CANUMBEROFDUNNINGNOTICES sy-vline 
WA_FKK_DUNVOL_ODATA_DUNVOLLIST_STR-DISPLAYCURRENCY sy-vline 
WA_FKK_DUNVOL_ODATA_DUNVOLLIST_STR-CACONTRACT sy-vline 
WA_FKK_DUNVOL_ODATA_DUNVOLLIST_STR-CASUBAPPLICATION sy-vline 
WA_FKK_DUNVOL_ODATA_DUNVOLLIST_STR-CASUBAPPLICATIONTEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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