ABAP Select data from SAP table VGBTNTECDSAPI into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VGBTNTECDSAPI
*  INTO TABLE @DATA(IT_VGBTNTECDSAPI2).
*--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_VGBTNTECDSAPI INDEX 1 INTO DATA(WA_VGBTNTECDSAPI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VGBTNTECDSAPI>-MANDT = 1.
<VGBTNTECDSAPI>-NOTEID = 1.
<VGBTNTECDSAPI>-OBJECTNODETYPE = 1.
<VGBTNTECDSAPI>-OBJECTID = 1.
<VGBTNTECDSAPI>-NOTETYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VGBTNTECDSAPI-LANGUAGE, sy-vline,
  WA_VGBTNTECDSAPI-TITLE, sy-vline,
  WA_VGBTNTECDSAPI-MIMETYPE, sy-vline,
  WA_VGBTNTECDSAPI-LENGTH, sy-vline,
  WA_VGBTNTECDSAPI-CREATOR, sy-vline,
  WA_VGBTNTECDSAPI-CREATED, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VGBTNTECDSAPI 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_VGBTNTECDSAPI 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_VGBTNTECDSAPI INTO WA_VGBTNTECDSAPI.


*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_VGBTNTECDSAPI_STR, 
MANDT TYPE STRING,
NOTEID TYPE STRING,
OBJECTNODETYPE TYPE STRING,
OBJECTID TYPE STRING,
NOTETYPE TYPE STRING,
LANGUAGE TYPE STRING,
TITLE TYPE STRING,
MIMETYPE TYPE STRING,
LENGTH TYPE STRING,
CREATOR TYPE STRING,
CREATED TYPE STRING,
LASTCHANGER TYPE STRING,
LASTCHANGED TYPE STRING,
CONTENT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VGBTNTECDSAPI_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_VGBTNTECDSAPI_STR-MANDT sy-vline 
WA_VGBTNTECDSAPI_STR-NOTEID sy-vline 
WA_VGBTNTECDSAPI_STR-OBJECTNODETYPE sy-vline 
WA_VGBTNTECDSAPI_STR-OBJECTID sy-vline 
WA_VGBTNTECDSAPI_STR-NOTETYPE sy-vline 
WA_VGBTNTECDSAPI_STR-LANGUAGE sy-vline 
WA_VGBTNTECDSAPI_STR-TITLE sy-vline 
WA_VGBTNTECDSAPI_STR-MIMETYPE sy-vline 
WA_VGBTNTECDSAPI_STR-LENGTH sy-vline 
WA_VGBTNTECDSAPI_STR-CREATOR sy-vline 
WA_VGBTNTECDSAPI_STR-CREATED sy-vline 
WA_VGBTNTECDSAPI_STR-LASTCHANGER sy-vline 
WA_VGBTNTECDSAPI_STR-LASTCHANGED sy-vline 
WA_VGBTNTECDSAPI_STR-CONTENT sy-vline      INTO ld_text SEPARATED BY SPACE.

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