ABAP Select data from SAP table PTRV_UTIL_VSCH into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PTRV_UTIL_VSCH
*  INTO TABLE @DATA(IT_PTRV_UTIL_VSCH2).
*--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_PTRV_UTIL_VSCH INDEX 1 INTO DATA(WA_PTRV_UTIL_VSCH2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PTRV_UTIL_VSCH>-VSCNR = 1.
<PTRV_UTIL_VSCH>-DISPLAY_ONLY = 1.
<PTRV_UTIL_VSCH>-VORSC = 1.
<PTRV_UTIL_VSCH>-WAERS = 1.
<PTRV_UTIL_VSCH>-KURSV = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PTRV_UTIL_VSCH-FFACT, sy-vline,
  WA_PTRV_UTIL_VSCH-TFACT, sy-vline,
  WA_PTRV_UTIL_VSCH-VORHW, sy-vline,
  WA_PTRV_UTIL_VSCH-KASSA, sy-vline,
  WA_PTRV_UTIL_VSCH-DATVS, sy-vline,
  WA_PTRV_UTIL_VSCH-PAYCURR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PTRV_UTIL_VSCH 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_PTRV_UTIL_VSCH 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_PTRV_UTIL_VSCH INTO WA_PTRV_UTIL_VSCH.


*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 EXCRT, internal->external for field KURSV
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_PTRV_UTIL_VSCH-KURSV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PTRV_UTIL_VSCH-KURSV.
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_PTRV_UTIL_VSCH_STR, 
VSCNR TYPE STRING,
DISPLAY_ONLY TYPE STRING,
VORSC TYPE STRING,
WAERS TYPE STRING,
KURSV TYPE STRING,
FFACT TYPE STRING,
TFACT TYPE STRING,
VORHW TYPE STRING,
KASSA TYPE STRING,
DATVS TYPE STRING,
PAYCURR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PTRV_UTIL_VSCH_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_PTRV_UTIL_VSCH_STR-VSCNR sy-vline 
WA_PTRV_UTIL_VSCH_STR-DISPLAY_ONLY sy-vline 
WA_PTRV_UTIL_VSCH_STR-VORSC sy-vline 
WA_PTRV_UTIL_VSCH_STR-WAERS sy-vline 
WA_PTRV_UTIL_VSCH_STR-KURSV sy-vline 
WA_PTRV_UTIL_VSCH_STR-FFACT sy-vline 
WA_PTRV_UTIL_VSCH_STR-TFACT sy-vline 
WA_PTRV_UTIL_VSCH_STR-VORHW sy-vline 
WA_PTRV_UTIL_VSCH_STR-KASSA sy-vline 
WA_PTRV_UTIL_VSCH_STR-DATVS sy-vline 
WA_PTRV_UTIL_VSCH_STR-PAYCURR sy-vline      INTO ld_text SEPARATED BY SPACE.

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