ABAP Select data from SAP table E3CVBUK into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP E3CVBUK 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 E3CVBUK. 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 E3CVBUK 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_E3CVBUK TYPE STANDARD TABLE OF E3CVBUK,
      WA_E3CVBUK TYPE E3CVBUK,
      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: <E3CVBUK> TYPE E3CVBUK.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E3CVBUK.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E3CVBUK
  INTO TABLE IT_E3CVBUK.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E3CVBUK
*  INTO TABLE @DATA(IT_E3CVBUK2).
*--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_E3CVBUK INDEX 1 INTO DATA(WA_E3CVBUK2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E3CVBUK ASSIGNING <E3CVBUK>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E3CVBUK>-SUPKZ = 1.
<E3CVBUK>-VBELN = 1.
<E3CVBUK>-RFSTK = 1.
<E3CVBUK>-RFGSK = 1.
<E3CVBUK>-BESTK = 1.

ENDLOOP.

LOOP AT IT_E3CVBUK INTO WA_E3CVBUK.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E3CVBUK-LFSTK, sy-vline,
  WA_E3CVBUK-LFGSK, sy-vline,
  WA_E3CVBUK-WBSTK, sy-vline,
  WA_E3CVBUK-FKSTK, sy-vline,
  WA_E3CVBUK-FKSAK, sy-vline,
  WA_E3CVBUK-BUCHK, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E3CVBUK 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_E3CVBUK 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_E3CVBUK INTO WA_E3CVBUK.


*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 VBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E3CVBUK-VBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E3CVBUK-VBELN.
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_E3CVBUK_STR, 
SUPKZ TYPE STRING,
VBELN TYPE STRING,
RFSTK TYPE STRING,
RFGSK TYPE STRING,
BESTK TYPE STRING,
LFSTK TYPE STRING,
LFGSK TYPE STRING,
WBSTK TYPE STRING,
FKSTK TYPE STRING,
FKSAK TYPE STRING,
BUCHK TYPE STRING,
ABSTK TYPE STRING,
GBSTK TYPE STRING,
KOSTK TYPE STRING,
LVSTK TYPE STRING,
UVALS TYPE STRING,
UVVLS TYPE STRING,
UVFAS TYPE STRING,
UVALL TYPE STRING,
UVVLK TYPE STRING,
UVFAK TYPE STRING,
UVPRS TYPE STRING,
VBTYP TYPE STRING,
VBOBJ TYPE STRING,
AEDAT TYPE STRING,
FKIVK TYPE STRING,
RELIK TYPE STRING,
UVK01 TYPE STRING,
UVK02 TYPE STRING,
UVK03 TYPE STRING,
UVK04 TYPE STRING,
UVK05 TYPE STRING,
UVS01 TYPE STRING,
UVS02 TYPE STRING,
UVS03 TYPE STRING,
UVS04 TYPE STRING,
UVS05 TYPE STRING,
PKSTK TYPE STRING,
CMPSA TYPE STRING,
CMPSB TYPE STRING,
CMPSC TYPE STRING,
CMPSD TYPE STRING,
CMPSE TYPE STRING,
CMPSF TYPE STRING,
CMPSG TYPE STRING,
CMPSH TYPE STRING,
CMPSI TYPE STRING,
CMPSJ TYPE STRING,
CMPSK TYPE STRING,
CMPSL TYPE STRING,
CMPS0 TYPE STRING,
CMPS1 TYPE STRING,
CMPS2 TYPE STRING,
CMGST TYPE STRING,
TRSTA TYPE STRING,
KOQUK TYPE STRING,
COSTA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E3CVBUK_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_E3CVBUK_STR-SUPKZ sy-vline 
WA_E3CVBUK_STR-VBELN sy-vline 
WA_E3CVBUK_STR-RFSTK sy-vline 
WA_E3CVBUK_STR-RFGSK sy-vline 
WA_E3CVBUK_STR-BESTK sy-vline 
WA_E3CVBUK_STR-LFSTK sy-vline 
WA_E3CVBUK_STR-LFGSK sy-vline 
WA_E3CVBUK_STR-WBSTK sy-vline 
WA_E3CVBUK_STR-FKSTK sy-vline 
WA_E3CVBUK_STR-FKSAK sy-vline 
WA_E3CVBUK_STR-BUCHK sy-vline 
WA_E3CVBUK_STR-ABSTK sy-vline 
WA_E3CVBUK_STR-GBSTK sy-vline 
WA_E3CVBUK_STR-KOSTK sy-vline 
WA_E3CVBUK_STR-LVSTK sy-vline 
WA_E3CVBUK_STR-UVALS sy-vline 
WA_E3CVBUK_STR-UVVLS sy-vline 
WA_E3CVBUK_STR-UVFAS sy-vline 
WA_E3CVBUK_STR-UVALL sy-vline 
WA_E3CVBUK_STR-UVVLK sy-vline 
WA_E3CVBUK_STR-UVFAK sy-vline 
WA_E3CVBUK_STR-UVPRS sy-vline 
WA_E3CVBUK_STR-VBTYP sy-vline 
WA_E3CVBUK_STR-VBOBJ sy-vline 
WA_E3CVBUK_STR-AEDAT sy-vline 
WA_E3CVBUK_STR-FKIVK sy-vline 
WA_E3CVBUK_STR-RELIK sy-vline 
WA_E3CVBUK_STR-UVK01 sy-vline 
WA_E3CVBUK_STR-UVK02 sy-vline 
WA_E3CVBUK_STR-UVK03 sy-vline 
WA_E3CVBUK_STR-UVK04 sy-vline 
WA_E3CVBUK_STR-UVK05 sy-vline 
WA_E3CVBUK_STR-UVS01 sy-vline 
WA_E3CVBUK_STR-UVS02 sy-vline 
WA_E3CVBUK_STR-UVS03 sy-vline 
WA_E3CVBUK_STR-UVS04 sy-vline 
WA_E3CVBUK_STR-UVS05 sy-vline 
WA_E3CVBUK_STR-PKSTK sy-vline 
WA_E3CVBUK_STR-CMPSA sy-vline 
WA_E3CVBUK_STR-CMPSB sy-vline 
WA_E3CVBUK_STR-CMPSC sy-vline 
WA_E3CVBUK_STR-CMPSD sy-vline 
WA_E3CVBUK_STR-CMPSE sy-vline 
WA_E3CVBUK_STR-CMPSF sy-vline 
WA_E3CVBUK_STR-CMPSG sy-vline 
WA_E3CVBUK_STR-CMPSH sy-vline 
WA_E3CVBUK_STR-CMPSI sy-vline 
WA_E3CVBUK_STR-CMPSJ sy-vline 
WA_E3CVBUK_STR-CMPSK sy-vline 
WA_E3CVBUK_STR-CMPSL sy-vline 
WA_E3CVBUK_STR-CMPS0 sy-vline 
WA_E3CVBUK_STR-CMPS1 sy-vline 
WA_E3CVBUK_STR-CMPS2 sy-vline 
WA_E3CVBUK_STR-CMGST sy-vline 
WA_E3CVBUK_STR-TRSTA sy-vline 
WA_E3CVBUK_STR-KOQUK sy-vline 
WA_E3CVBUK_STR-COSTA sy-vline      INTO ld_text SEPARATED BY SPACE.

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