ABAP Select data from SAP table VKK_DOC_VIEW into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VKK_DOC_VIEW
*  INTO TABLE @DATA(IT_VKK_DOC_VIEW2).
*--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_VKK_DOC_VIEW INDEX 1 INTO DATA(WA_VKK_DOC_VIEW2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VKK_DOC_VIEW>-OPBEL = 1.
<VKK_DOC_VIEW>-CPUDT = 1.
<VKK_DOC_VIEW>-OPUPK = 1.
<VKK_DOC_VIEW>-BETRW = 1.
<VKK_DOC_VIEW>-WAERS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VKK_DOC_VIEW-GPART, sy-vline,
  WA_VKK_DOC_VIEW-VTREF, sy-vline,
  WA_VKK_DOC_VIEW-VKONT, sy-vline,
  WA_VKK_DOC_VIEW-BUKRS, sy-vline,
  WA_VKK_DOC_VIEW-HKONT, sy-vline,
  WA_VKK_DOC_VIEW-BETRH, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VKK_DOC_VIEW 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_VKK_DOC_VIEW 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_VKK_DOC_VIEW INTO WA_VKK_DOC_VIEW.


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

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

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

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

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

*Conversion exit ALPHA, internal->external for field AUGBL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VKK_DOC_VIEW-AUGBL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VKK_DOC_VIEW-AUGBL.
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_VKK_DOC_VIEW_STR, 
OPBEL TYPE STRING,
CPUDT TYPE STRING,
OPUPK TYPE STRING,
BETRW TYPE STRING,
WAERS TYPE STRING,
GPART TYPE STRING,
VTREF TYPE STRING,
VKONT TYPE STRING,
BUKRS TYPE STRING,
HKONT TYPE STRING,
BETRH TYPE STRING,
WAERSH TYPE STRING,
BETR2 TYPE STRING,
WAERSH2 TYPE STRING,
CURTP TYPE STRING,
BETR3 TYPE STRING,
WAERSH3 TYPE STRING,
CURTP2 TYPE STRING,
AUGBL TYPE STRING,
AUGWA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VKK_DOC_VIEW_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_VKK_DOC_VIEW_STR-OPBEL sy-vline 
WA_VKK_DOC_VIEW_STR-CPUDT sy-vline 
WA_VKK_DOC_VIEW_STR-OPUPK sy-vline 
WA_VKK_DOC_VIEW_STR-BETRW sy-vline 
WA_VKK_DOC_VIEW_STR-WAERS sy-vline 
WA_VKK_DOC_VIEW_STR-GPART sy-vline 
WA_VKK_DOC_VIEW_STR-VTREF sy-vline 
WA_VKK_DOC_VIEW_STR-VKONT sy-vline 
WA_VKK_DOC_VIEW_STR-BUKRS sy-vline 
WA_VKK_DOC_VIEW_STR-HKONT sy-vline 
WA_VKK_DOC_VIEW_STR-BETRH sy-vline 
WA_VKK_DOC_VIEW_STR-WAERSH sy-vline 
WA_VKK_DOC_VIEW_STR-BETR2 sy-vline 
WA_VKK_DOC_VIEW_STR-WAERSH2 sy-vline 
WA_VKK_DOC_VIEW_STR-CURTP sy-vline 
WA_VKK_DOC_VIEW_STR-BETR3 sy-vline 
WA_VKK_DOC_VIEW_STR-WAERSH3 sy-vline 
WA_VKK_DOC_VIEW_STR-CURTP2 sy-vline 
WA_VKK_DOC_VIEW_STR-AUGBL sy-vline 
WA_VKK_DOC_VIEW_STR-AUGWA sy-vline      INTO ld_text SEPARATED BY SPACE.

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