ABAP Select data from SAP table DVK03 into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP DVK03 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 DVK03. 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 DVK03 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_DVK03 TYPE STANDARD TABLE OF DVK03,
      WA_DVK03 TYPE DVK03,
      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: <DVK03> TYPE DVK03.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_DVK03.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM DVK03
  INTO TABLE IT_DVK03.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DVK03
*  INTO TABLE @DATA(IT_DVK032).
*--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_DVK03 INDEX 1 INTO DATA(WA_DVK032).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_DVK03 ASSIGNING <DVK03>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DVK03>-MANDT_R2 = 1.
<DVK03>-SNKOM = 1.
<DVK03>-LNKOM = 1.
<DVK03>-SSKOM = 1.
<DVK03>-KUNNR = 1.

ENDLOOP.

LOOP AT IT_DVK03 INTO WA_DVK03.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DVK03-MANDT, sy-vline,
  WA_DVK03-VBELN, sy-vline,
  WA_DVK03-WADAT, sy-vline,
  WA_DVK03-ERNAM, sy-vline,
  WA_DVK03-ERDAT, sy-vline,
  WA_DVK03-ERZET, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DVK03 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_DVK03 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_DVK03 INTO WA_DVK03.


*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 KUNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DVK03-KUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DVK03-KUNNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DVK03-VBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DVK03-VBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SPDNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DVK03-SPDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DVK03-SPDNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field GEWEI
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_DVK03-GEWEI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DVK03-GEWEI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VOLEH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_DVK03-VOLEH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DVK03-VOLEH.
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_DVK03_STR, 
MANDT_R2 TYPE STRING,
SNKOM TYPE STRING,
LNKOM TYPE STRING,
SSKOM TYPE STRING,
KUNNR TYPE STRING,
MANDT TYPE STRING,
VBELN TYPE STRING,
WADAT TYPE STRING,
ERNAM TYPE STRING,
ERDAT TYPE STRING,
ERZET TYPE STRING,
SPDNR TYPE STRING,
AUTLF TYPE STRING,
ANZPK TYPE STRING,
COMMN TYPE STRING,
VERUR TYPE STRING,
BRGEW TYPE STRING,
NTGEW TYPE STRING,
GEWEI TYPE STRING,
VOLUM TYPE STRING,
VOLEH TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DVK03_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_DVK03_STR-MANDT_R2 sy-vline 
WA_DVK03_STR-SNKOM sy-vline 
WA_DVK03_STR-LNKOM sy-vline 
WA_DVK03_STR-SSKOM sy-vline 
WA_DVK03_STR-KUNNR sy-vline 
WA_DVK03_STR-MANDT sy-vline 
WA_DVK03_STR-VBELN sy-vline 
WA_DVK03_STR-WADAT sy-vline 
WA_DVK03_STR-ERNAM sy-vline 
WA_DVK03_STR-ERDAT sy-vline 
WA_DVK03_STR-ERZET sy-vline 
WA_DVK03_STR-SPDNR sy-vline 
WA_DVK03_STR-AUTLF sy-vline 
WA_DVK03_STR-ANZPK sy-vline 
WA_DVK03_STR-COMMN sy-vline 
WA_DVK03_STR-VERUR sy-vline 
WA_DVK03_STR-BRGEW sy-vline 
WA_DVK03_STR-NTGEW sy-vline 
WA_DVK03_STR-GEWEI sy-vline 
WA_DVK03_STR-VOLUM sy-vline 
WA_DVK03_STR-VOLEH sy-vline      INTO ld_text SEPARATED BY SPACE.

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