ABAP Select data from SAP table VETRFV into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VETRFV
*  INTO TABLE @DATA(IT_VETRFV2).
*--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_VETRFV INDEX 1 INTO DATA(WA_VETRFV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VETRFV>-MANDT = 1.
<VETRFV>-LRATESTEP = 1.
<VETRFV>-TARIFNR = 1.
<VETRFV>-TARLFDNR = 1.
<VETRFV>-OPTIONAL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VETRFV-TIMECONTRL, sy-vline,
  WA_VETRFV-STTARIF, sy-vline,
  WA_VETRFV-S_TVORG, sy-vline,
  WA_VETRFV-H_TVORG, sy-vline,
  WA_VETRFV-S_ABSTVORG, sy-vline,
  WA_VETRFV-H_ABSTVORG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VETRFV 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_VETRFV 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_VETRFV INTO WA_VETRFV.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_VETRFV_STR, 
MANDT TYPE STRING,
LRATESTEP TYPE STRING,
TARIFNR TYPE STRING,
TARLFDNR TYPE STRING,
OPTIONAL TYPE STRING,
TIMECONTRL TYPE STRING,
STTARIF TYPE STRING,
S_TVORG TYPE STRING,
H_TVORG TYPE STRING,
S_ABSTVORG TYPE STRING,
H_ABSTVORG TYPE STRING,
CHNG_SIGN TYPE STRING,
KONZIGR TYPE STRING,
SAISON TYPE STRING,
PROGRAMM TYPE STRING,
EIN01 TYPE STRING,
EIN02 TYPE STRING,
EIN03 TYPE STRING,
EIN04 TYPE STRING,
EIN05 TYPE STRING,
EIN06 TYPE STRING,
EIN07 TYPE STRING,
EIN08 TYPE STRING,
EIN09 TYPE STRING,
EIN10 TYPE STRING,
AUS01 TYPE STRING,
AUS02 TYPE STRING,
AUS03 TYPE STRING,
AUS04 TYPE STRING,
AUS05 TYPE STRING,
VARCONT1 TYPE STRING,
VARCONT2 TYPE STRING,
VARCONT3 TYPE STRING,
VARCONT4 TYPE STRING,
VARCONT5 TYPE STRING,
BELZART1 TYPE STRING,
BELZART2 TYPE STRING,
BELZART3 TYPE STRING,
BELZART4 TYPE STRING,
BELZART5 TYPE STRING,
KZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VETRFV_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_VETRFV_STR-MANDT sy-vline 
WA_VETRFV_STR-LRATESTEP sy-vline 
WA_VETRFV_STR-TARIFNR sy-vline 
WA_VETRFV_STR-TARLFDNR sy-vline 
WA_VETRFV_STR-OPTIONAL sy-vline 
WA_VETRFV_STR-TIMECONTRL sy-vline 
WA_VETRFV_STR-STTARIF sy-vline 
WA_VETRFV_STR-S_TVORG sy-vline 
WA_VETRFV_STR-H_TVORG sy-vline 
WA_VETRFV_STR-S_ABSTVORG sy-vline 
WA_VETRFV_STR-H_ABSTVORG sy-vline 
WA_VETRFV_STR-CHNG_SIGN sy-vline 
WA_VETRFV_STR-KONZIGR sy-vline 
WA_VETRFV_STR-SAISON sy-vline 
WA_VETRFV_STR-PROGRAMM sy-vline 
WA_VETRFV_STR-EIN01 sy-vline 
WA_VETRFV_STR-EIN02 sy-vline 
WA_VETRFV_STR-EIN03 sy-vline 
WA_VETRFV_STR-EIN04 sy-vline 
WA_VETRFV_STR-EIN05 sy-vline 
WA_VETRFV_STR-EIN06 sy-vline 
WA_VETRFV_STR-EIN07 sy-vline 
WA_VETRFV_STR-EIN08 sy-vline 
WA_VETRFV_STR-EIN09 sy-vline 
WA_VETRFV_STR-EIN10 sy-vline 
WA_VETRFV_STR-AUS01 sy-vline 
WA_VETRFV_STR-AUS02 sy-vline 
WA_VETRFV_STR-AUS03 sy-vline 
WA_VETRFV_STR-AUS04 sy-vline 
WA_VETRFV_STR-AUS05 sy-vline 
WA_VETRFV_STR-VARCONT1 sy-vline 
WA_VETRFV_STR-VARCONT2 sy-vline 
WA_VETRFV_STR-VARCONT3 sy-vline 
WA_VETRFV_STR-VARCONT4 sy-vline 
WA_VETRFV_STR-VARCONT5 sy-vline 
WA_VETRFV_STR-BELZART1 sy-vline 
WA_VETRFV_STR-BELZART2 sy-vline 
WA_VETRFV_STR-BELZART3 sy-vline 
WA_VETRFV_STR-BELZART4 sy-vline 
WA_VETRFV_STR-BELZART5 sy-vline 
WA_VETRFV_STR-KZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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