ABAP Select data from SAP table V_RECNCN_DFPS into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP V_RECNCN_DFPS 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_RECNCN_DFPS. 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_RECNCN_DFPS 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_RECNCN_DFPS TYPE STANDARD TABLE OF V_RECNCN_DFPS,
      WA_V_RECNCN_DFPS TYPE V_RECNCN_DFPS,
      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_RECNCN_DFPS> TYPE V_RECNCN_DFPS.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_RECNCN_DFPS
*  INTO TABLE @DATA(IT_V_RECNCN_DFPS2).
*--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_RECNCN_DFPS INDEX 1 INTO DATA(WA_V_RECNCN_DFPS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_RECNCN_DFPS>-MANDT = 1.
<V_RECNCN_DFPS>-VALIDFROM = 1.
<V_RECNCN_DFPS>-VALIDTO = 1.
<V_RECNCN_DFPS>-KOKRS = 1.
<V_RECNCN_DFPS>-KOSTL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_RECNCN_DFPS-PARTNEROBJNR, sy-vline,
  WA_V_RECNCN_DFPS-INTRENO, sy-vline,
  WA_V_RECNCN_DFPS-BUKRS, sy-vline,
  WA_V_RECNCN_DFPS-RECNNR, sy-vline,
  WA_V_RECNCN_DFPS-RECNBEG, sy-vline,
  WA_V_RECNCN_DFPS-RECNENDABS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_RECNCN_DFPS 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_RECNCN_DFPS 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_RECNCN_DFPS INTO WA_V_RECNCN_DFPS.


*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 REDAT, internal->external for field VALIDTO
CALL FUNCTION 'CONVERSION_EXIT_REDAT_OUTPUT'
  EXPORTING
    input =                      WA_V_RECNCN_DFPS-VALIDTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_RECNCN_DFPS-VALIDTO.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit REDAT, internal->external for field RECNENDABS
CALL FUNCTION 'CONVERSION_EXIT_REDAT_OUTPUT'
  EXPORTING
    input =                      WA_V_RECNCN_DFPS-RECNENDABS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_RECNCN_DFPS-RECNENDABS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit IMKEY, internal->external for field IMKEY
CALL FUNCTION 'CONVERSION_EXIT_IMKEY_OUTPUT'
  EXPORTING
    input =                      WA_V_RECNCN_DFPS-IMKEY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_RECNCN_DFPS-IMKEY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field TERMNO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_RECNCN_DFPS-TERMNO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_RECNCN_DFPS-TERMNO.
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_V_RECNCN_DFPS_STR, 
MANDT TYPE STRING,
VALIDFROM TYPE STRING,
VALIDTO TYPE STRING,
KOKRS TYPE STRING,
KOSTL TYPE STRING,
PARTNEROBJNR TYPE STRING,
INTRENO TYPE STRING,
BUKRS TYPE STRING,
RECNNR TYPE STRING,
RECNBEG TYPE STRING,
RECNENDABS TYPE STRING,
RECNTXT TYPE STRING,
RECNDACTIV TYPE STRING,
OBJNR TYPE STRING,
RECNTYPE TYPE STRING,
IMKEY TYPE STRING,
DATBI TYPE STRING,
TERMTYPE TYPE STRING,
TERMNO TYPE STRING,
DATAB TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_RECNCN_DFPS_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_RECNCN_DFPS_STR-MANDT sy-vline 
WA_V_RECNCN_DFPS_STR-VALIDFROM sy-vline 
WA_V_RECNCN_DFPS_STR-VALIDTO sy-vline 
WA_V_RECNCN_DFPS_STR-KOKRS sy-vline 
WA_V_RECNCN_DFPS_STR-KOSTL sy-vline 
WA_V_RECNCN_DFPS_STR-PARTNEROBJNR sy-vline 
WA_V_RECNCN_DFPS_STR-INTRENO sy-vline 
WA_V_RECNCN_DFPS_STR-BUKRS sy-vline 
WA_V_RECNCN_DFPS_STR-RECNNR sy-vline 
WA_V_RECNCN_DFPS_STR-RECNBEG sy-vline 
WA_V_RECNCN_DFPS_STR-RECNENDABS sy-vline 
WA_V_RECNCN_DFPS_STR-RECNTXT sy-vline 
WA_V_RECNCN_DFPS_STR-RECNDACTIV sy-vline 
WA_V_RECNCN_DFPS_STR-OBJNR sy-vline 
WA_V_RECNCN_DFPS_STR-RECNTYPE sy-vline 
WA_V_RECNCN_DFPS_STR-IMKEY sy-vline 
WA_V_RECNCN_DFPS_STR-DATBI sy-vline 
WA_V_RECNCN_DFPS_STR-TERMTYPE sy-vline 
WA_V_RECNCN_DFPS_STR-TERMNO sy-vline 
WA_V_RECNCN_DFPS_STR-DATAB sy-vline      INTO ld_text SEPARATED BY SPACE.

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