ABAP Select data from SAP table MGV_VLCVEHICLE2 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP MGV_VLCVEHICLE2 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 MGV_VLCVEHICLE2. 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 MGV_VLCVEHICLE2 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_MGV_VLCVEHICLE2 TYPE STANDARD TABLE OF MGV_VLCVEHICLE2,
      WA_MGV_VLCVEHICLE2 TYPE MGV_VLCVEHICLE2,
      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: <MGV_VLCVEHICLE2> TYPE MGV_VLCVEHICLE2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_MGV_VLCVEHICLE2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM MGV_VLCVEHICLE2
  INTO TABLE IT_MGV_VLCVEHICLE2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MGV_VLCVEHICLE2
*  INTO TABLE @DATA(IT_MGV_VLCVEHICLE22).
*--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_MGV_VLCVEHICLE2 INDEX 1 INTO DATA(WA_MGV_VLCVEHICLE22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_MGV_VLCVEHICLE2 ASSIGNING <MGV_VLCVEHICLE2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MGV_VLCVEHICLE2>-MANDT = 1.
<MGV_VLCVEHICLE2>-VGUID = 1.
<MGV_VLCVEHICLE2>-VHCLE = 1.
<MGV_VLCVEHICLE2>-MATNR = 1.
<MGV_VLCVEHICLE2>-LIFNR = 1.

ENDLOOP.

LOOP AT IT_MGV_VLCVEHICLE2 INTO WA_MGV_VLCVEHICLE2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MGV_VLCVEHICLE2-CHARG, sy-vline,
  WA_MGV_VLCVEHICLE2-EQUNR, sy-vline,
  WA_MGV_VLCVEHICLE2-WERKS, sy-vline,
  WA_MGV_VLCVEHICLE2-LGORT, sy-vline,
  WA_MGV_VLCVEHICLE2-BWTAR, sy-vline,
  WA_MGV_VLCVEHICLE2-CUOBJ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MGV_VLCVEHICLE2 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_MGV_VLCVEHICLE2 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_MGV_VLCVEHICLE2 INTO WA_MGV_VLCVEHICLE2.


*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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_MGV_VLCVEHICLE2-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MGV_VLCVEHICLE2-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MGV_VLCVEHICLE2-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MGV_VLCVEHICLE2-LIFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EQUNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MGV_VLCVEHICLE2-EQUNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MGV_VLCVEHICLE2-EQUNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MGV_VLCVEHICLE2-KUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MGV_VLCVEHICLE2-KUNNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ENDCU
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MGV_VLCVEHICLE2-ENDCU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MGV_VLCVEHICLE2-ENDCU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field PCOUNT_U
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MGV_VLCVEHICLE2-PCOUNT_U
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MGV_VLCVEHICLE2-PCOUNT_U.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VHORD
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MGV_VLCVEHICLE2-VHORD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MGV_VLCVEHICLE2-VHORD.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATNL, internal->external for field MATNR_EXT
CALL FUNCTION 'CONVERSION_EXIT_MATNL_OUTPUT'
  EXPORTING
    input =                      WA_MGV_VLCVEHICLE2-MATNR_EXT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MGV_VLCVEHICLE2-MATNR_EXT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATNW, internal->external for field MATNR_VERS
CALL FUNCTION 'CONVERSION_EXIT_MATNW_OUTPUT'
  EXPORTING
    input =                      WA_MGV_VLCVEHICLE2-MATNR_VERS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MGV_VLCVEHICLE2-MATNR_VERS.
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_MGV_VLCVEHICLE2_STR, 
MANDT TYPE STRING,
VGUID TYPE STRING,
VHCLE TYPE STRING,
MATNR TYPE STRING,
LIFNR TYPE STRING,
CHARG TYPE STRING,
EQUNR TYPE STRING,
WERKS TYPE STRING,
LGORT TYPE STRING,
BWTAR TYPE STRING,
CUOBJ TYPE STRING,
CUABA TYPE STRING,
MMCTR TYPE STRING,
MMSTA TYPE STRING,
MMTSP TYPE STRING,
SDCTR TYPE STRING,
SDSTA TYPE STRING,
SDTSP TYPE STRING,
KUNNR TYPE STRING,
ENDCU TYPE STRING,
VHVIN TYPE STRING,
VHCEX TYPE STRING,
AVAIL TYPE STRING,
VBLTY TYPE STRING,
LOCTN TYPE STRING,
GPRICE TYPE STRING,
GPRICECUKY TYPE STRING,
CDTSP TYPE STRING,
PSTSP TYPE STRING,
PDTSP TYPE STRING,
ERNAM TYPE STRING,
VHUSG TYPE STRING,
CMPGN TYPE STRING,
PCOUNT TYPE STRING,
PCOUNT_U TYPE STRING,
IMMATDATE TYPE STRING,
VHSAR TYPE STRING,
VHORD TYPE STRING,
SHLVL TYPE STRING,
ARCHIVE_FLAG TYPE STRING,
USED_VEHICLE TYPE STRING,
MATNR_EXT TYPE STRING,
MATNR_VERS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MGV_VLCVEHICLE2_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_MGV_VLCVEHICLE2_STR-MANDT sy-vline 
WA_MGV_VLCVEHICLE2_STR-VGUID sy-vline 
WA_MGV_VLCVEHICLE2_STR-VHCLE sy-vline 
WA_MGV_VLCVEHICLE2_STR-MATNR sy-vline 
WA_MGV_VLCVEHICLE2_STR-LIFNR sy-vline 
WA_MGV_VLCVEHICLE2_STR-CHARG sy-vline 
WA_MGV_VLCVEHICLE2_STR-EQUNR sy-vline 
WA_MGV_VLCVEHICLE2_STR-WERKS sy-vline 
WA_MGV_VLCVEHICLE2_STR-LGORT sy-vline 
WA_MGV_VLCVEHICLE2_STR-BWTAR sy-vline 
WA_MGV_VLCVEHICLE2_STR-CUOBJ sy-vline 
WA_MGV_VLCVEHICLE2_STR-CUABA sy-vline 
WA_MGV_VLCVEHICLE2_STR-MMCTR sy-vline 
WA_MGV_VLCVEHICLE2_STR-MMSTA sy-vline 
WA_MGV_VLCVEHICLE2_STR-MMTSP sy-vline 
WA_MGV_VLCVEHICLE2_STR-SDCTR sy-vline 
WA_MGV_VLCVEHICLE2_STR-SDSTA sy-vline 
WA_MGV_VLCVEHICLE2_STR-SDTSP sy-vline 
WA_MGV_VLCVEHICLE2_STR-KUNNR sy-vline 
WA_MGV_VLCVEHICLE2_STR-ENDCU sy-vline 
WA_MGV_VLCVEHICLE2_STR-VHVIN sy-vline 
WA_MGV_VLCVEHICLE2_STR-VHCEX sy-vline 
WA_MGV_VLCVEHICLE2_STR-AVAIL sy-vline 
WA_MGV_VLCVEHICLE2_STR-VBLTY sy-vline 
WA_MGV_VLCVEHICLE2_STR-LOCTN sy-vline 
WA_MGV_VLCVEHICLE2_STR-GPRICE sy-vline 
WA_MGV_VLCVEHICLE2_STR-GPRICECUKY sy-vline 
WA_MGV_VLCVEHICLE2_STR-CDTSP sy-vline 
WA_MGV_VLCVEHICLE2_STR-PSTSP sy-vline 
WA_MGV_VLCVEHICLE2_STR-PDTSP sy-vline 
WA_MGV_VLCVEHICLE2_STR-ERNAM sy-vline 
WA_MGV_VLCVEHICLE2_STR-VHUSG sy-vline 
WA_MGV_VLCVEHICLE2_STR-CMPGN sy-vline 
WA_MGV_VLCVEHICLE2_STR-PCOUNT sy-vline 
WA_MGV_VLCVEHICLE2_STR-PCOUNT_U sy-vline 
WA_MGV_VLCVEHICLE2_STR-IMMATDATE sy-vline 
WA_MGV_VLCVEHICLE2_STR-VHSAR sy-vline 
WA_MGV_VLCVEHICLE2_STR-VHORD sy-vline 
WA_MGV_VLCVEHICLE2_STR-SHLVL sy-vline 
WA_MGV_VLCVEHICLE2_STR-ARCHIVE_FLAG sy-vline 
WA_MGV_VLCVEHICLE2_STR-USED_VEHICLE sy-vline 
WA_MGV_VLCVEHICLE2_STR-MATNR_EXT sy-vline 
WA_MGV_VLCVEHICLE2_STR-MATNR_VERS sy-vline      INTO ld_text SEPARATED BY SPACE.

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