ABAP Select data from SAP table V_TDICT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_TDICT
*  INTO TABLE @DATA(IT_V_TDICT2).
*--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_V_TDICT INDEX 1 INTO DATA(WA_V_TDICT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_TDICT>-MANDT = 1.
<V_TDICT>-COM_TYPE = 1.
<V_TDICT>-CACOM_TYPE = 1.
<V_TDICT>-F_DEFAULT = 1.
<V_TDICT>-DDS_HOSTNAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_TDICT-DDS_PATH, sy-vline,
  WA_V_TDICT-FILE_HANDLING, sy-vline,
  WA_V_TDICT-F_CONTROL, sy-vline,
  WA_V_TDICT-F_RECEIPT, sy-vline,
  WA_V_TDICT-COVER_PAGE, sy-vline,
  WA_V_TDICT-RECEIPT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_TDICT 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_V_TDICT 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_V_TDICT INTO WA_V_TDICT.


*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_V_TDICT_STR, 
MANDT TYPE STRING,
COM_TYPE TYPE STRING,
CACOM_TYPE TYPE STRING,
F_DEFAULT TYPE STRING,
DDS_HOSTNAME TYPE STRING,
DDS_PATH TYPE STRING,
FILE_HANDLING TYPE STRING,
F_CONTROL TYPE STRING,
F_RECEIPT TYPE STRING,
COVER_PAGE TYPE STRING,
RECEIPT TYPE STRING,
DESCRIPT TYPE STRING,
F_DISP_OFF TYPE STRING,
DISP_OFFTP TYPE STRING,
DISP_OFF TYPE STRING,
F_PRINTER TYPE STRING,
F_ACTIVE TYPE STRING,
URL TYPE STRING,
DISP_COM_TYPE TYPE STRING,
HTTP_PATH TYPE STRING,
HTTP_DEST TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_TDICT_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_V_TDICT_STR-MANDT sy-vline 
WA_V_TDICT_STR-COM_TYPE sy-vline 
WA_V_TDICT_STR-CACOM_TYPE sy-vline 
WA_V_TDICT_STR-F_DEFAULT sy-vline 
WA_V_TDICT_STR-DDS_HOSTNAME sy-vline 
WA_V_TDICT_STR-DDS_PATH sy-vline 
WA_V_TDICT_STR-FILE_HANDLING sy-vline 
WA_V_TDICT_STR-F_CONTROL sy-vline 
WA_V_TDICT_STR-F_RECEIPT sy-vline 
WA_V_TDICT_STR-COVER_PAGE sy-vline 
WA_V_TDICT_STR-RECEIPT sy-vline 
WA_V_TDICT_STR-DESCRIPT sy-vline 
WA_V_TDICT_STR-F_DISP_OFF sy-vline 
WA_V_TDICT_STR-DISP_OFFTP sy-vline 
WA_V_TDICT_STR-DISP_OFF sy-vline 
WA_V_TDICT_STR-F_PRINTER sy-vline 
WA_V_TDICT_STR-F_ACTIVE sy-vline 
WA_V_TDICT_STR-URL sy-vline 
WA_V_TDICT_STR-DISP_COM_TYPE sy-vline 
WA_V_TDICT_STR-HTTP_PATH sy-vline 
WA_V_TDICT_STR-HTTP_DEST sy-vline      INTO ld_text SEPARATED BY SPACE.

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