ABAP Select data from SAP table /DSD/VC_KOMKBVL_A into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /DSD/VC_KOMKBVL_A 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 /DSD/VC_KOMKBVL_A. 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 /DSD/VC_KOMKBVL_A 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_/DSD/VC_KOMKBVL_A TYPE STANDARD TABLE OF /DSD/VC_KOMKBVL_A,
      WA_/DSD/VC_KOMKBVL_A TYPE /DSD/VC_KOMKBVL_A,
      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: </DSD/VC_KOMKBVL_A> TYPE /DSD/VC_KOMKBVL_A.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /DSD/VC_KOMKBVL_A
  INTO TABLE IT_/DSD/VC_KOMKBVL_A.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /DSD/VC_KOMKBVL_A
*  INTO TABLE @DATA(IT_/DSD/VC_KOMKBVL_A2).
*--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_/DSD/VC_KOMKBVL_A INDEX 1 INTO DATA(WA_/DSD/VC_KOMKBVL_A2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/DSD/VC_KOMKBVL_A ASSIGNING </DSD/VC_KOMKBVL_A>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</DSD/VC_KOMKBVL_A>-/DSD/VC_VLID = 1.
</DSD/VC_KOMKBVL_A>-/DSD/VC_EXDAT = 1.
</DSD/VC_KOMKBVL_A>-/DSD/VC_VCTEXT = 1.
</DSD/VC_KOMKBVL_A>-/DSD/VC_VPID = 1.
</DSD/VC_KOMKBVL_A>-/DSD/VC_VPTYP = 1.

ENDLOOP.

LOOP AT IT_/DSD/VC_KOMKBVL_A INTO WA_/DSD/VC_KOMKBVL_A.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/DSD/VC_KOMKBVL_A-/DSD/VC_STIME, sy-vline,
  WA_/DSD/VC_KOMKBVL_A-/DSD/VC_STZONE, sy-vline,
  WA_/DSD/VC_KOMKBVL_A-/DSD/VC_SPOINT, sy-vline,
  WA_/DSD/VC_KOMKBVL_A-/DSD/VC_EPOINT, sy-vline,
  WA_/DSD/VC_KOMKBVL_A-ROUTE, sy-vline,
  WA_/DSD/VC_KOMKBVL_A-/DSD/VC_AUTH, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/DSD/VC_KOMKBVL_A 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_/DSD/VC_KOMKBVL_A 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_/DSD/VC_KOMKBVL_A INTO WA_/DSD/VC_KOMKBVL_A.


*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 /DSD/VC_VLID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/DSD/VC_KOMKBVL_A-/DSD/VC_VLID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/DSD/VC_KOMKBVL_A-/DSD/VC_VLID.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit ALPHA, internal->external for field /BEV1/RPFAR1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/DSD/VC_KOMKBVL_A-/BEV1/RPFAR1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/DSD/VC_KOMKBVL_A-/BEV1/RPFAR1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field /BEV1/RPFAR2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/DSD/VC_KOMKBVL_A-/BEV1/RPFAR2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/DSD/VC_KOMKBVL_A-/BEV1/RPFAR2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field /BEV1/RPMOWA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/DSD/VC_KOMKBVL_A-/BEV1/RPMOWA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/DSD/VC_KOMKBVL_A-/BEV1/RPMOWA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field /BEV1/RPANHAE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/DSD/VC_KOMKBVL_A-/BEV1/RPANHAE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/DSD/VC_KOMKBVL_A-/BEV1/RPANHAE.
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_/DSD/VC_KOMKBVL_A_STR, 
/DSD/VC_VLID TYPE STRING,
/DSD/VC_EXDAT TYPE STRING,
/DSD/VC_VCTEXT TYPE STRING,
/DSD/VC_VPID TYPE STRING,
/DSD/VC_VPTYP TYPE STRING,
/DSD/VC_STIME TYPE STRING,
/DSD/VC_STZONE TYPE STRING,
/DSD/VC_SPOINT TYPE STRING,
/DSD/VC_EPOINT TYPE STRING,
ROUTE TYPE STRING,
/DSD/VC_AUTH TYPE STRING,
/DSD/VC_EXDAT1 TYPE STRING,
/DSD/VC_XLOCK TYPE STRING,
/DSD/VC_INACTIV TYPE STRING,
/DSD/VC_FRECE TYPE STRING,
/DSD/VC_FVISIT TYPE STRING,
/DSD/VC_PAFKT TYPE STRING,
/DSD/VC_TRHH TYPE STRING,
/DSD/VC_VLHH TYPE STRING,
/DSD/VC_CUSTD TYPE STRING,
/DSD/VC_CALTYP TYPE STRING,
/DSD/VC_FMANTR TYPE STRING,
/DSD/VC_VPRNR TYPE STRING,
/DSD/VC_VLRNR TYPE STRING,
/DSD/VC_BSO TYPE STRING,
/DSD/VC_SLTYP TYPE STRING,
/DSD/VC_KALSM TYPE STRING,
/BEV1/RPFAR1 TYPE STRING,
/BEV1/RPFAR2 TYPE STRING,
/BEV1/RPMOWA TYPE STRING,
/BEV1/RPANHAE TYPE STRING,
SALES_ORG TYPE STRING,
DIST_CHANNEL TYPE STRING,
DIVISION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/DSD/VC_KOMKBVL_A_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_/DSD/VC_KOMKBVL_A_STR-/DSD/VC_VLID sy-vline 
WA_/DSD/VC_KOMKBVL_A_STR-/DSD/VC_EXDAT sy-vline 
WA_/DSD/VC_KOMKBVL_A_STR-/DSD/VC_VCTEXT sy-vline 
WA_/DSD/VC_KOMKBVL_A_STR-/DSD/VC_VPID sy-vline 
WA_/DSD/VC_KOMKBVL_A_STR-/DSD/VC_VPTYP sy-vline 
WA_/DSD/VC_KOMKBVL_A_STR-/DSD/VC_STIME sy-vline 
WA_/DSD/VC_KOMKBVL_A_STR-/DSD/VC_STZONE sy-vline 
WA_/DSD/VC_KOMKBVL_A_STR-/DSD/VC_SPOINT sy-vline 
WA_/DSD/VC_KOMKBVL_A_STR-/DSD/VC_EPOINT sy-vline 
WA_/DSD/VC_KOMKBVL_A_STR-ROUTE sy-vline 
WA_/DSD/VC_KOMKBVL_A_STR-/DSD/VC_AUTH sy-vline 
WA_/DSD/VC_KOMKBVL_A_STR-/DSD/VC_EXDAT1 sy-vline 
WA_/DSD/VC_KOMKBVL_A_STR-/DSD/VC_XLOCK sy-vline 
WA_/DSD/VC_KOMKBVL_A_STR-/DSD/VC_INACTIV sy-vline 
WA_/DSD/VC_KOMKBVL_A_STR-/DSD/VC_FRECE sy-vline 
WA_/DSD/VC_KOMKBVL_A_STR-/DSD/VC_FVISIT sy-vline 
WA_/DSD/VC_KOMKBVL_A_STR-/DSD/VC_PAFKT sy-vline 
WA_/DSD/VC_KOMKBVL_A_STR-/DSD/VC_TRHH sy-vline 
WA_/DSD/VC_KOMKBVL_A_STR-/DSD/VC_VLHH sy-vline 
WA_/DSD/VC_KOMKBVL_A_STR-/DSD/VC_CUSTD sy-vline 
WA_/DSD/VC_KOMKBVL_A_STR-/DSD/VC_CALTYP sy-vline 
WA_/DSD/VC_KOMKBVL_A_STR-/DSD/VC_FMANTR sy-vline 
WA_/DSD/VC_KOMKBVL_A_STR-/DSD/VC_VPRNR sy-vline 
WA_/DSD/VC_KOMKBVL_A_STR-/DSD/VC_VLRNR sy-vline 
WA_/DSD/VC_KOMKBVL_A_STR-/DSD/VC_BSO sy-vline 
WA_/DSD/VC_KOMKBVL_A_STR-/DSD/VC_SLTYP sy-vline 
WA_/DSD/VC_KOMKBVL_A_STR-/DSD/VC_KALSM sy-vline 
WA_/DSD/VC_KOMKBVL_A_STR-/BEV1/RPFAR1 sy-vline 
WA_/DSD/VC_KOMKBVL_A_STR-/BEV1/RPFAR2 sy-vline 
WA_/DSD/VC_KOMKBVL_A_STR-/BEV1/RPMOWA sy-vline 
WA_/DSD/VC_KOMKBVL_A_STR-/BEV1/RPANHAE sy-vline 
WA_/DSD/VC_KOMKBVL_A_STR-SALES_ORG sy-vline 
WA_/DSD/VC_KOMKBVL_A_STR-DIST_CHANNEL sy-vline 
WA_/DSD/VC_KOMKBVL_A_STR-DIVISION sy-vline      INTO ld_text SEPARATED BY SPACE.

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