ABAP Select data from SAP table VEKPD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VEKPD
*  INTO TABLE @DATA(IT_VEKPD2).
*--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_VEKPD INDEX 1 INTO DATA(WA_VEKPD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VEKPD>-UPDKZ = 1.
<VEKPD>-KZTRA = 1.
<VEKPD>-VEBEZ = 1.
<VEKPD>-SORTF = 1.
<VEKPD>-AENDB = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VEKPD-AENDB_WV, sy-vline,
  WA_VEKPD-AENDB_QUAN, sy-vline,
  WA_VEKPD-AENDB_STATUS, sy-vline,
  WA_VEKPD-KZUNT, sy-vline,
  WA_VEKPD-KZOBE, sy-vline,
  WA_VEKPD-FRGEW, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VEKPD 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_VEKPD 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_VEKPD INTO WA_VEKPD.


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

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

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

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

*Conversion exit ALPHA, internal->external for field LOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VEKPD-LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VEKPD-LOGSYS.
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_VEKPD_STR, 
UPDKZ TYPE STRING,
KZTRA TYPE STRING,
VEBEZ TYPE STRING,
SORTF TYPE STRING,
AENDB TYPE STRING,
AENDB_WV TYPE STRING,
AENDB_QUAN TYPE STRING,
AENDB_STATUS TYPE STRING,
KZUNT TYPE STRING,
KZOBE TYPE STRING,
FRGEW TYPE STRING,
GEWEI_FR TYPE STRING,
FRVOL TYPE STRING,
VOLEH_FR TYPE STRING,
KZPGN TYPE STRING,
WERFD TYPE STRING,
SELKZ TYPE STRING,
LE_LGPLA TYPE STRING,
LE_LGTYP TYPE STRING,
WM_VERW TYPE STRING,
MTPOS TYPE STRING,
DEST_LGNUM TYPE STRING,
DEST_LGTYP TYPE STRING,
DEST_LGPLA TYPE STRING,
OBJNR TYPE STRING,
KUNNR TYPE STRING,
LIEFNR TYPE STRING,
TARAVAR TYPE STRING,
STSMA TYPE STRING,
HISTU TYPE STRING,
ACTIVITY TYPE STRING,
OBJECT TYPE STRING,
HU_STATUS_INIT TYPE STRING,
LOGSYS TYPE STRING,
HU_LOCKED TYPE STRING,
LETYP_WM TYPE STRING,
TOP_HU_DLVRY TYPE STRING,
KZEBU TYPE STRING,
VWPOS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VEKPD_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_VEKPD_STR-UPDKZ sy-vline 
WA_VEKPD_STR-KZTRA sy-vline 
WA_VEKPD_STR-VEBEZ sy-vline 
WA_VEKPD_STR-SORTF sy-vline 
WA_VEKPD_STR-AENDB sy-vline 
WA_VEKPD_STR-AENDB_WV sy-vline 
WA_VEKPD_STR-AENDB_QUAN sy-vline 
WA_VEKPD_STR-AENDB_STATUS sy-vline 
WA_VEKPD_STR-KZUNT sy-vline 
WA_VEKPD_STR-KZOBE sy-vline 
WA_VEKPD_STR-FRGEW sy-vline 
WA_VEKPD_STR-GEWEI_FR sy-vline 
WA_VEKPD_STR-FRVOL sy-vline 
WA_VEKPD_STR-VOLEH_FR sy-vline 
WA_VEKPD_STR-KZPGN sy-vline 
WA_VEKPD_STR-WERFD sy-vline 
WA_VEKPD_STR-SELKZ sy-vline 
WA_VEKPD_STR-LE_LGPLA sy-vline 
WA_VEKPD_STR-LE_LGTYP sy-vline 
WA_VEKPD_STR-WM_VERW sy-vline 
WA_VEKPD_STR-MTPOS sy-vline 
WA_VEKPD_STR-DEST_LGNUM sy-vline 
WA_VEKPD_STR-DEST_LGTYP sy-vline 
WA_VEKPD_STR-DEST_LGPLA sy-vline 
WA_VEKPD_STR-OBJNR sy-vline 
WA_VEKPD_STR-KUNNR sy-vline 
WA_VEKPD_STR-LIEFNR sy-vline 
WA_VEKPD_STR-TARAVAR sy-vline 
WA_VEKPD_STR-STSMA sy-vline 
WA_VEKPD_STR-HISTU sy-vline 
WA_VEKPD_STR-ACTIVITY sy-vline 
WA_VEKPD_STR-OBJECT sy-vline 
WA_VEKPD_STR-HU_STATUS_INIT sy-vline 
WA_VEKPD_STR-LOGSYS sy-vline 
WA_VEKPD_STR-HU_LOCKED sy-vline 
WA_VEKPD_STR-LETYP_WM sy-vline 
WA_VEKPD_STR-TOP_HU_DLVRY sy-vline 
WA_VEKPD_STR-KZEBU sy-vline 
WA_VEKPD_STR-VWPOS sy-vline      INTO ld_text SEPARATED BY SPACE.

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