ABAP Select data from SAP table VTDSTC 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 VTDSTC 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 VTDSTC. 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 VTDSTC 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_VTDSTC TYPE STANDARD TABLE OF VTDSTC,
      WA_VTDSTC TYPE VTDSTC,
      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: <VTDSTC> TYPE VTDSTC.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VTDSTC
*  INTO TABLE @DATA(IT_VTDSTC2).
*--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_VTDSTC INDEX 1 INTO DATA(WA_VTDSTC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VTDSTC>-MANDT = 1.
<VTDSTC>-VBELN = 1.
<VTDSTC>-TDLNR = 1.
<VTDSTC>-STATE = 1.
<VTDSTC>-AEDAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VTDSTC-AEZET, sy-vline,
  WA_VTDSTC-DTCON, sy-vline,
  WA_VTDSTC-LOCCL1, sy-vline,
  WA_VTDSTC-LOCID1, sy-vline,
  WA_VTDSTC-SUBID1, sy-vline,
  WA_VTDSTC-ADRNR1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VTDSTC 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_VTDSTC 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_VTDSTC INTO WA_VTDSTC.


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

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

*Conversion exit ALPHA, internal->external for field ADRNR1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VTDSTC-ADRNR1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VTDSTC-ADRNR1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ADRNR2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VTDSTC-ADRNR2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VTDSTC-ADRNR2.
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_VTDSTC_STR, 
MANDT TYPE STRING,
VBELN TYPE STRING,
TDLNR TYPE STRING,
STATE TYPE STRING,
AEDAT TYPE STRING,
AEZET TYPE STRING,
DTCON TYPE STRING,
LOCCL1 TYPE STRING,
LOCID1 TYPE STRING,
SUBID1 TYPE STRING,
ADRNR1 TYPE STRING,
LOCCL2 TYPE STRING,
LOCID2 TYPE STRING,
SUBID2 TYPE STRING,
ADRNR2 TYPE STRING,
DPTBG TYPE STRING,
UPTBG TYPE STRING,
TZONBG TYPE STRING,
DPTEN TYPE STRING,
UPTEN TYPE STRING,
TZONEN TYPE STRING,
TPLST TYPE STRING,
SHTYP TYPE STRING,
TXTID1 TYPE STRING,
TXTID2 TYPE STRING,
TXTID3 TYPE STRING,
KSCHL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VTDSTC_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_VTDSTC_STR-MANDT sy-vline 
WA_VTDSTC_STR-VBELN sy-vline 
WA_VTDSTC_STR-TDLNR sy-vline 
WA_VTDSTC_STR-STATE sy-vline 
WA_VTDSTC_STR-AEDAT sy-vline 
WA_VTDSTC_STR-AEZET sy-vline 
WA_VTDSTC_STR-DTCON sy-vline 
WA_VTDSTC_STR-LOCCL1 sy-vline 
WA_VTDSTC_STR-LOCID1 sy-vline 
WA_VTDSTC_STR-SUBID1 sy-vline 
WA_VTDSTC_STR-ADRNR1 sy-vline 
WA_VTDSTC_STR-LOCCL2 sy-vline 
WA_VTDSTC_STR-LOCID2 sy-vline 
WA_VTDSTC_STR-SUBID2 sy-vline 
WA_VTDSTC_STR-ADRNR2 sy-vline 
WA_VTDSTC_STR-DPTBG sy-vline 
WA_VTDSTC_STR-UPTBG sy-vline 
WA_VTDSTC_STR-TZONBG sy-vline 
WA_VTDSTC_STR-DPTEN sy-vline 
WA_VTDSTC_STR-UPTEN sy-vline 
WA_VTDSTC_STR-TZONEN sy-vline 
WA_VTDSTC_STR-TPLST sy-vline 
WA_VTDSTC_STR-SHTYP sy-vline 
WA_VTDSTC_STR-TXTID1 sy-vline 
WA_VTDSTC_STR-TXTID2 sy-vline 
WA_VTDSTC_STR-TXTID3 sy-vline 
WA_VTDSTC_STR-KSCHL sy-vline      INTO ld_text SEPARATED BY SPACE.

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