ABAP Select data from SAP table VTG_IDX_STRUCTURE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VTG_IDX_STRUCTURE
*  INTO TABLE @DATA(IT_VTG_IDX_STRUCTURE2).
*--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_VTG_IDX_STRUCTURE INDEX 1 INTO DATA(WA_VTG_IDX_STRUCTURE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VTG_IDX_STRUCTURE>-IDX = 1.
<VTG_IDX_STRUCTURE>-IDX_JPROR = 1.
<VTG_IDX_STRUCTURE>-IDX_BASE_DATE = 1.
<VTG_IDX_STRUCTURE>-SVULT = 1.
<VTG_IDX_STRUCTURE>-SVWERK = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VTG_IDX_STRUCTURE-SKALID, sy-vline,
  WA_VTG_IDX_STRUCTURE-SKALID2, sy-vline,
  WA_VTG_IDX_STRUCTURE-DGUEL_KP, sy-vline,
  WA_VTG_IDX_STRUCTURE-DFAELL, sy-vline,
  WA_VTG_IDX_STRUCTURE-SKOART, sy-vline,
  WA_VTG_IDX_STRUCTURE-INDEX_INTERPOLATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VTG_IDX_STRUCTURE 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_VTG_IDX_STRUCTURE 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_VTG_IDX_STRUCTURE INTO WA_VTG_IDX_STRUCTURE.


*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_VTG_IDX_STRUCTURE_STR, 
IDX TYPE STRING,
IDX_JPROR TYPE STRING,
IDX_BASE_DATE TYPE STRING,
SVULT TYPE STRING,
SVWERK TYPE STRING,
SKALID TYPE STRING,
SKALID2 TYPE STRING,
DGUEL_KP TYPE STRING,
DFAELL TYPE STRING,
SKOART TYPE STRING,
INDEX_INTERPOLATE TYPE STRING,
INDEX_ADJ_DATE_RELATION TYPE STRING,
INDEX_FIX_DATE_LOW TYPE STRING,
INDEX_FIX_DATE_HIGH TYPE STRING,
INDEX_BASE_VALUE TYPE STRING,
PRICEINDEX_APPLY TYPE STRING,
INDEX_TEXT TYPE STRING,
RATIO TYPE STRING,
DVALUT TYPE STRING,
INDEX_SKONDGRPREF TYPE STRING,
AMMRHY TYPE STRING,
ATTRHY TYPE STRING,
SINCL TYPE STRING,
AVTAGEVZ TYPE STRING,
AFTAGE TYPE STRING,
ARHYTM TYPE STRING,
ARHYTM_UNIT TYPE STRING,
XFDAYTYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VTG_IDX_STRUCTURE_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_VTG_IDX_STRUCTURE_STR-IDX sy-vline 
WA_VTG_IDX_STRUCTURE_STR-IDX_JPROR sy-vline 
WA_VTG_IDX_STRUCTURE_STR-IDX_BASE_DATE sy-vline 
WA_VTG_IDX_STRUCTURE_STR-SVULT sy-vline 
WA_VTG_IDX_STRUCTURE_STR-SVWERK sy-vline 
WA_VTG_IDX_STRUCTURE_STR-SKALID sy-vline 
WA_VTG_IDX_STRUCTURE_STR-SKALID2 sy-vline 
WA_VTG_IDX_STRUCTURE_STR-DGUEL_KP sy-vline 
WA_VTG_IDX_STRUCTURE_STR-DFAELL sy-vline 
WA_VTG_IDX_STRUCTURE_STR-SKOART sy-vline 
WA_VTG_IDX_STRUCTURE_STR-INDEX_INTERPOLATE sy-vline 
WA_VTG_IDX_STRUCTURE_STR-INDEX_ADJ_DATE_RELATION sy-vline 
WA_VTG_IDX_STRUCTURE_STR-INDEX_FIX_DATE_LOW sy-vline 
WA_VTG_IDX_STRUCTURE_STR-INDEX_FIX_DATE_HIGH sy-vline 
WA_VTG_IDX_STRUCTURE_STR-INDEX_BASE_VALUE sy-vline 
WA_VTG_IDX_STRUCTURE_STR-PRICEINDEX_APPLY sy-vline 
WA_VTG_IDX_STRUCTURE_STR-INDEX_TEXT sy-vline 
WA_VTG_IDX_STRUCTURE_STR-RATIO sy-vline 
WA_VTG_IDX_STRUCTURE_STR-DVALUT sy-vline 
WA_VTG_IDX_STRUCTURE_STR-INDEX_SKONDGRPREF sy-vline 
WA_VTG_IDX_STRUCTURE_STR-AMMRHY sy-vline 
WA_VTG_IDX_STRUCTURE_STR-ATTRHY sy-vline 
WA_VTG_IDX_STRUCTURE_STR-SINCL sy-vline 
WA_VTG_IDX_STRUCTURE_STR-AVTAGEVZ sy-vline 
WA_VTG_IDX_STRUCTURE_STR-AFTAGE sy-vline 
WA_VTG_IDX_STRUCTURE_STR-ARHYTM sy-vline 
WA_VTG_IDX_STRUCTURE_STR-ARHYTM_UNIT sy-vline 
WA_VTG_IDX_STRUCTURE_STR-XFDAYTYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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