ABAP Select data from SAP table V_TKEVA03 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP V_TKEVA03 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_TKEVA03. 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_TKEVA03 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_TKEVA03 TYPE STANDARD TABLE OF V_TKEVA03,
      WA_V_TKEVA03 TYPE V_TKEVA03,
      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_TKEVA03> TYPE V_TKEVA03.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_V_TKEVA03.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM V_TKEVA03
  INTO TABLE IT_V_TKEVA03.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_TKEVA03
*  INTO TABLE @DATA(IT_V_TKEVA032).
*--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_TKEVA03 INDEX 1 INTO DATA(WA_V_TKEVA032).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_V_TKEVA03 ASSIGNING <V_TKEVA03>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_TKEVA03>-MANDT = 1.
<V_TKEVA03>-KALAW = 1.
<V_TKEVA03>-KLVAR = 1.
<V_TKEVA03>-TVERS = 1.
<V_TKEVA03>-KKZMA = 1.

ENDLOOP.

LOOP AT IT_V_TKEVA03 INTO WA_V_TKEVA03.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_TKEVA03-KADKY, sy-vline,
  WA_V_TKEVA03-JAHRPER, sy-vline,
  WA_V_TKEVA03-KALPK, sy-vline,
  WA_V_TKEVA03-KALAWX, sy-vline,
  WA_V_TKEVA03-KEART, sy-vline,
  WA_V_TKEVA03-LOSFX, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_TKEVA03 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_TKEVA03 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_TKEVA03 INTO WA_V_TKEVA03.


*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 PERI7, internal->external for field JAHRPER
CALL FUNCTION 'CONVERSION_EXIT_PERI7_OUTPUT'
  EXPORTING
    input =                      WA_V_TKEVA03-JAHRPER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_TKEVA03-JAHRPER.
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_TKEVA03_STR, 
MANDT TYPE STRING,
KALAW TYPE STRING,
KLVAR TYPE STRING,
TVERS TYPE STRING,
KKZMA TYPE STRING,
KADKY TYPE STRING,
JAHRPER TYPE STRING,
KALPK TYPE STRING,
KALAWX TYPE STRING,
KEART TYPE STRING,
LOSFX TYPE STRING,
AUFKA TYPE STRING,
BWTAR TYPE STRING,
TXKLV TYPE STRING,
EXCLU TYPE STRING,
WERKS TYPE STRING,
ISTDA TYPE STRING,
NAME1 TYPE STRING,
ERROR TYPE STRING,
FAUF TYPE STRING,
SICHT TYPE STRING,
SCALE TYPE STRING,
ORDSEL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_TKEVA03_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_TKEVA03_STR-MANDT sy-vline 
WA_V_TKEVA03_STR-KALAW sy-vline 
WA_V_TKEVA03_STR-KLVAR sy-vline 
WA_V_TKEVA03_STR-TVERS sy-vline 
WA_V_TKEVA03_STR-KKZMA sy-vline 
WA_V_TKEVA03_STR-KADKY sy-vline 
WA_V_TKEVA03_STR-JAHRPER sy-vline 
WA_V_TKEVA03_STR-KALPK sy-vline 
WA_V_TKEVA03_STR-KALAWX sy-vline 
WA_V_TKEVA03_STR-KEART sy-vline 
WA_V_TKEVA03_STR-LOSFX sy-vline 
WA_V_TKEVA03_STR-AUFKA sy-vline 
WA_V_TKEVA03_STR-BWTAR sy-vline 
WA_V_TKEVA03_STR-TXKLV sy-vline 
WA_V_TKEVA03_STR-EXCLU sy-vline 
WA_V_TKEVA03_STR-WERKS sy-vline 
WA_V_TKEVA03_STR-ISTDA sy-vline 
WA_V_TKEVA03_STR-NAME1 sy-vline 
WA_V_TKEVA03_STR-ERROR sy-vline 
WA_V_TKEVA03_STR-FAUF sy-vline 
WA_V_TKEVA03_STR-SICHT sy-vline 
WA_V_TKEVA03_STR-SCALE sy-vline 
WA_V_TKEVA03_STR-ORDSEL sy-vline      INTO ld_text SEPARATED BY SPACE.

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