ABAP Select data from SAP table VDFS_MC_MODEL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VDFS_MC_MODEL
*  INTO TABLE @DATA(IT_VDFS_MC_MODEL2).
*--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_VDFS_MC_MODEL INDEX 1 INTO DATA(WA_VDFS_MC_MODEL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VDFS_MC_MODEL>-MANDT = 1.
<VDFS_MC_MODEL>-DEFENSEMODELUUID = 1.
<VDFS_MC_MODEL>-DEFENSEMODELIDENTIFIER = 1.
<VDFS_MC_MODEL>-DFSMODELNAME = 1.
<VDFS_MC_MODEL>-DFSMODELFRCELMNTORGUUID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VDFS_MC_MODEL-FORCEELEMENTORGID, sy-vline,
  WA_VDFS_MC_MODEL-DFSMODELSTATUSOBJECTID, sy-vline,
  WA_VDFS_MC_MODEL-DEFENSEMODELSTATUS, sy-vline,
  WA_VDFS_MC_MODEL-DFSMODELCREATEDBYUSER, sy-vline,
  WA_VDFS_MC_MODEL-DFSMODELCREATIONDATETIME, sy-vline,
  WA_VDFS_MC_MODEL-DFSMODELLASTCHANGEDBYUSER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VDFS_MC_MODEL 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_VDFS_MC_MODEL 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_VDFS_MC_MODEL INTO WA_VDFS_MC_MODEL.


*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_VDFS_MC_MODEL_STR, 
MANDT TYPE STRING,
DEFENSEMODELUUID TYPE STRING,
DEFENSEMODELIDENTIFIER TYPE STRING,
DFSMODELNAME TYPE STRING,
DFSMODELFRCELMNTORGUUID TYPE STRING,
FORCEELEMENTORGID TYPE STRING,
DFSMODELSTATUSOBJECTID TYPE STRING,
DEFENSEMODELSTATUS TYPE STRING,
DFSMODELCREATEDBYUSER TYPE STRING,
DFSMODELCREATIONDATETIME TYPE STRING,
DFSMODELLASTCHANGEDBYUSER TYPE STRING,
DFSMODELLASTCHANGEDDATETIME TYPE STRING,
KZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VDFS_MC_MODEL_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_VDFS_MC_MODEL_STR-MANDT sy-vline 
WA_VDFS_MC_MODEL_STR-DEFENSEMODELUUID sy-vline 
WA_VDFS_MC_MODEL_STR-DEFENSEMODELIDENTIFIER sy-vline 
WA_VDFS_MC_MODEL_STR-DFSMODELNAME sy-vline 
WA_VDFS_MC_MODEL_STR-DFSMODELFRCELMNTORGUUID sy-vline 
WA_VDFS_MC_MODEL_STR-FORCEELEMENTORGID sy-vline 
WA_VDFS_MC_MODEL_STR-DFSMODELSTATUSOBJECTID sy-vline 
WA_VDFS_MC_MODEL_STR-DEFENSEMODELSTATUS sy-vline 
WA_VDFS_MC_MODEL_STR-DFSMODELCREATEDBYUSER sy-vline 
WA_VDFS_MC_MODEL_STR-DFSMODELCREATIONDATETIME sy-vline 
WA_VDFS_MC_MODEL_STR-DFSMODELLASTCHANGEDBYUSER sy-vline 
WA_VDFS_MC_MODEL_STR-DFSMODELLASTCHANGEDDATETIME sy-vline 
WA_VDFS_MC_MODEL_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.