ABAP Select data from SAP table V_VSKOPF into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP V_VSKOPF 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_VSKOPF. 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_VSKOPF 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_VSKOPF TYPE STANDARD TABLE OF V_VSKOPF,
      WA_V_VSKOPF TYPE V_VSKOPF,
      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_VSKOPF> TYPE V_VSKOPF.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_VSKOPF
*  INTO TABLE @DATA(IT_V_VSKOPF2).
*--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_VSKOPF INDEX 1 INTO DATA(WA_V_VSKOPF2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_VSKOPF>-MANDT = 1.
<V_VSKOPF>-VSNMR = 1.
<V_VSKOPF>-VSZHL = 1.
<V_VSKOPF>-VSKAT = 1.
<V_VSKOPF>-OBJNR_PD = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_VSKOPF-OBJNR_NP, sy-vline,
  WA_V_VSKOPF-VSGRUPPE, sy-vline,
  WA_V_VSKOPF-VSERNAM, sy-vline,
  WA_V_VSKOPF-VSAENAM, sy-vline,
  WA_V_VSKOPF-VSERDAT, sy-vline,
  WA_V_VSKOPF-VSAEDAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_VSKOPF 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_VSKOPF 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_VSKOPF INTO WA_V_VSKOPF.


*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 OBKEY, internal->external for field OBJNR_PD
CALL FUNCTION 'CONVERSION_EXIT_OBKEY_OUTPUT'
  EXPORTING
    input =                      WA_V_VSKOPF-OBJNR_PD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_VSKOPF-OBJNR_PD.
WRITE:/ 'New Value:', ld_input.

*Conversion exit OBKEY, internal->external for field OBJNR_NP
CALL FUNCTION 'CONVERSION_EXIT_OBKEY_OUTPUT'
  EXPORTING
    input =                      WA_V_VSKOPF-OBJNR_NP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_VSKOPF-OBJNR_NP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field VSTXTSP
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_V_VSKOPF-VSTXTSP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_VSKOPF-VSTXTSP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSN, internal->external for field PSPID
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_V_VSKOPF-PSPID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_VSKOPF-PSPID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSN, internal->external for field POSID
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_V_VSKOPF-POSID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_VSKOPF-POSID.
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_VSKOPF_STR, 
MANDT TYPE STRING,
VSNMR TYPE STRING,
VSZHL TYPE STRING,
VSKAT TYPE STRING,
OBJNR_PD TYPE STRING,
OBJNR_NP TYPE STRING,
VSGRUPPE TYPE STRING,
VSERNAM TYPE STRING,
VSAENAM TYPE STRING,
VSERDAT TYPE STRING,
VSAEDAT TYPE STRING,
VSTXTSP TYPE STRING,
VSTEXT TYPE STRING,
VSOBJL TYPE STRING,
VSTRNAM TYPE STRING,
VSTRDAT TYPE STRING,
VSTRANS TYPE STRING,
VSINACT TYPE STRING,
VSMTA TYPE STRING,
PSPID TYPE STRING,
POSID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_VSKOPF_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_VSKOPF_STR-MANDT sy-vline 
WA_V_VSKOPF_STR-VSNMR sy-vline 
WA_V_VSKOPF_STR-VSZHL sy-vline 
WA_V_VSKOPF_STR-VSKAT sy-vline 
WA_V_VSKOPF_STR-OBJNR_PD sy-vline 
WA_V_VSKOPF_STR-OBJNR_NP sy-vline 
WA_V_VSKOPF_STR-VSGRUPPE sy-vline 
WA_V_VSKOPF_STR-VSERNAM sy-vline 
WA_V_VSKOPF_STR-VSAENAM sy-vline 
WA_V_VSKOPF_STR-VSERDAT sy-vline 
WA_V_VSKOPF_STR-VSAEDAT sy-vline 
WA_V_VSKOPF_STR-VSTXTSP sy-vline 
WA_V_VSKOPF_STR-VSTEXT sy-vline 
WA_V_VSKOPF_STR-VSOBJL sy-vline 
WA_V_VSKOPF_STR-VSTRNAM sy-vline 
WA_V_VSKOPF_STR-VSTRDAT sy-vline 
WA_V_VSKOPF_STR-VSTRANS sy-vline 
WA_V_VSKOPF_STR-VSINACT sy-vline 
WA_V_VSKOPF_STR-VSMTA sy-vline 
WA_V_VSKOPF_STR-PSPID sy-vline 
WA_V_VSKOPF_STR-POSID sy-vline      INTO ld_text SEPARATED BY SPACE.

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