ABAP Select data from SAP table VETVG into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP VETVG 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 VETVG. 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 VETVG 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_VETVG TYPE STANDARD TABLE OF VETVG,
      WA_VETVG TYPE VETVG,
      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: <VETVG> TYPE VETVG.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VETVG
*  INTO TABLE @DATA(IT_VETVG2).
*--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_VETVG INDEX 1 INTO DATA(WA_VETVG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VETVG>-MANDT = 1.
<VETVG>-VSTEL = 1.
<VETVG>-LEDAT = 1.
<VETVG>-LPRIO = 1.
<VETVG>-ROUTE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VETVG-SPDNR, sy-vline,
  WA_VETVG-WADAT, sy-vline,
  WA_VETVG-KUNWE, sy-vline,
  WA_VETVG-VBELN, sy-vline,
  WA_VETVG-KUNNR, sy-vline,
  WA_VETVG-VKORG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VETVG 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_VETVG 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_VETVG INTO WA_VETVG.


*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 SPDNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VETVG-SPDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VETVG-SPDNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field ADRNR_WE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VETVG-ADRNR_WE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VETVG-ADRNR_WE.
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_VETVG_STR, 
MANDT TYPE STRING,
VSTEL TYPE STRING,
LEDAT TYPE STRING,
LPRIO TYPE STRING,
ROUTE TYPE STRING,
SPDNR TYPE STRING,
WADAT TYPE STRING,
KUNWE TYPE STRING,
VBELN TYPE STRING,
KUNNR TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
VKBUR TYPE STRING,
VKGRP TYPE STRING,
AUTLF TYPE STRING,
BRGEW TYPE STRING,
GEWEI TYPE STRING,
VOLUM TYPE STRING,
VOLEH TYPE STRING,
BEARZ TYPE STRING,
ADRNR_AG TYPE STRING,
ADRNR_WE TYPE STRING,
AUART TYPE STRING,
RESWK TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VETVG_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_VETVG_STR-MANDT sy-vline 
WA_VETVG_STR-VSTEL sy-vline 
WA_VETVG_STR-LEDAT sy-vline 
WA_VETVG_STR-LPRIO sy-vline 
WA_VETVG_STR-ROUTE sy-vline 
WA_VETVG_STR-SPDNR sy-vline 
WA_VETVG_STR-WADAT sy-vline 
WA_VETVG_STR-KUNWE sy-vline 
WA_VETVG_STR-VBELN sy-vline 
WA_VETVG_STR-KUNNR sy-vline 
WA_VETVG_STR-VKORG sy-vline 
WA_VETVG_STR-VTWEG sy-vline 
WA_VETVG_STR-SPART sy-vline 
WA_VETVG_STR-VKBUR sy-vline 
WA_VETVG_STR-VKGRP sy-vline 
WA_VETVG_STR-AUTLF sy-vline 
WA_VETVG_STR-BRGEW sy-vline 
WA_VETVG_STR-GEWEI sy-vline 
WA_VETVG_STR-VOLUM sy-vline 
WA_VETVG_STR-VOLEH sy-vline 
WA_VETVG_STR-BEARZ sy-vline 
WA_VETVG_STR-ADRNR_AG sy-vline 
WA_VETVG_STR-ADRNR_WE sy-vline 
WA_VETVG_STR-AUART sy-vline 
WA_VETVG_STR-RESWK sy-vline      INTO ld_text SEPARATED BY SPACE.

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