ABAP Select data from SAP table VLC_VEHICLECONFIG_S into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VLC_VEHICLECONFIG_S
*  INTO TABLE @DATA(IT_VLC_VEHICLECONFIG_S2).
*--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_VLC_VEHICLECONFIG_S INDEX 1 INTO DATA(WA_VLC_VEHICLECONFIG_S2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VLC_VEHICLECONFIG_S>-MANDT = 1.
<VLC_VEHICLECONFIG_S>-VMSVEHICLEEQUIPMENTTEMPLATE = 1.
<VLC_VEHICLECONFIG_S>-MYOBJECTID = 1.
<VLC_VEHICLECONFIG_S>-VMSVEHICLEATTRIBUTEGROUP = 1.
<VLC_VEHICLECONFIG_S>-VMSVEHICLEATTRIBUTE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VLC_VEHICLECONFIG_S-INSTALLEDBASECOMPONENT, sy-vline,
  WA_VLC_VEHICLECONFIG_S-CLFNOBJECTID, sy-vline,
  WA_VLC_VEHICLECONFIG_S-CHARACTERISTIC, sy-vline,
  WA_VLC_VEHICLECONFIG_S-CHARCFROMNUMERICVALUE, sy-vline,
  WA_VLC_VEHICLECONFIG_S-CHARCVALUE, sy-vline,
  WA_VLC_VEHICLECONFIG_S-CURRENCY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VLC_VEHICLECONFIG_S 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_VLC_VEHICLECONFIG_S 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_VLC_VEHICLECONFIG_S INTO WA_VLC_VEHICLECONFIG_S.


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

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

*Conversion exit ALPHA, internal->external for field LOGICALSYSTEM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VLC_VEHICLECONFIG_S-LOGICALSYSTEM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VLC_VEHICLECONFIG_S-LOGICALSYSTEM.
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_VLC_VEHICLECONFIG_S_STR, 
MANDT TYPE STRING,
VMSVEHICLEEQUIPMENTTEMPLATE TYPE STRING,
MYOBJECTID TYPE STRING,
VMSVEHICLEATTRIBUTEGROUP TYPE STRING,
VMSVEHICLEATTRIBUTE TYPE STRING,
INSTALLEDBASECOMPONENT TYPE STRING,
CLFNOBJECTID TYPE STRING,
CHARACTERISTIC TYPE STRING,
CHARCFROMNUMERICVALUE TYPE STRING,
CHARCVALUE TYPE STRING,
CURRENCY TYPE STRING,
CHARCDECIMALS TYPE STRING,
CHARCDATATYPE TYPE STRING,
CHARCLENGTH TYPE STRING,
CHARCVALUEUNIT TYPE STRING,
CLASS TYPE STRING,
CLASSTYPE TYPE STRING,
LOGICALSYSTEM TYPE STRING,
OPERATION TYPE STRING,
VLC_DVH_ATTRIBUTE TYPE STRING,
SOURCE_ATTR TYPE STRING,
DVH_ATTR_GROUP TYPE STRING,
DVH_ATTRIBUTE TYPE STRING,
VALUE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VLC_VEHICLECONFIG_S_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_VLC_VEHICLECONFIG_S_STR-MANDT sy-vline 
WA_VLC_VEHICLECONFIG_S_STR-VMSVEHICLEEQUIPMENTTEMPLATE sy-vline 
WA_VLC_VEHICLECONFIG_S_STR-MYOBJECTID sy-vline 
WA_VLC_VEHICLECONFIG_S_STR-VMSVEHICLEATTRIBUTEGROUP sy-vline 
WA_VLC_VEHICLECONFIG_S_STR-VMSVEHICLEATTRIBUTE sy-vline 
WA_VLC_VEHICLECONFIG_S_STR-INSTALLEDBASECOMPONENT sy-vline 
WA_VLC_VEHICLECONFIG_S_STR-CLFNOBJECTID sy-vline 
WA_VLC_VEHICLECONFIG_S_STR-CHARACTERISTIC sy-vline 
WA_VLC_VEHICLECONFIG_S_STR-CHARCFROMNUMERICVALUE sy-vline 
WA_VLC_VEHICLECONFIG_S_STR-CHARCVALUE sy-vline 
WA_VLC_VEHICLECONFIG_S_STR-CURRENCY sy-vline 
WA_VLC_VEHICLECONFIG_S_STR-CHARCDECIMALS sy-vline 
WA_VLC_VEHICLECONFIG_S_STR-CHARCDATATYPE sy-vline 
WA_VLC_VEHICLECONFIG_S_STR-CHARCLENGTH sy-vline 
WA_VLC_VEHICLECONFIG_S_STR-CHARCVALUEUNIT sy-vline 
WA_VLC_VEHICLECONFIG_S_STR-CLASS sy-vline 
WA_VLC_VEHICLECONFIG_S_STR-CLASSTYPE sy-vline 
WA_VLC_VEHICLECONFIG_S_STR-LOGICALSYSTEM sy-vline 
WA_VLC_VEHICLECONFIG_S_STR-OPERATION sy-vline 
WA_VLC_VEHICLECONFIG_S_STR-VLC_DVH_ATTRIBUTE sy-vline 
WA_VLC_VEHICLECONFIG_S_STR-SOURCE_ATTR sy-vline 
WA_VLC_VEHICLECONFIG_S_STR-DVH_ATTR_GROUP sy-vline 
WA_VLC_VEHICLECONFIG_S_STR-DVH_ATTRIBUTE sy-vline 
WA_VLC_VEHICLECONFIG_S_STR-VALUE sy-vline      INTO ld_text SEPARATED BY SPACE.

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