ABAP Select data from SAP table /OSP/HOTEL_DETAILS_DTO into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /OSP/HOTEL_DETAILS_DTO 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 /OSP/HOTEL_DETAILS_DTO. 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 /OSP/HOTEL_DETAILS_DTO 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_/OSP/HOTEL_DETAILS_DTO TYPE STANDARD TABLE OF /OSP/HOTEL_DETAILS_DTO,
      WA_/OSP/HOTEL_DETAILS_DTO TYPE /OSP/HOTEL_DETAILS_DTO,
      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: </OSP/HOTEL_DETAILS_DTO> TYPE /OSP/HOTEL_DETAILS_DTO.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /OSP/HOTEL_DETAILS_DTO
  INTO TABLE IT_/OSP/HOTEL_DETAILS_DTO.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /OSP/HOTEL_DETAILS_DTO
*  INTO TABLE @DATA(IT_/OSP/HOTEL_DETAILS_DTO2).
*--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_/OSP/HOTEL_DETAILS_DTO INDEX 1 INTO DATA(WA_/OSP/HOTEL_DETAILS_DTO2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/OSP/HOTEL_DETAILS_DTO ASSIGNING </OSP/HOTEL_DETAILS_DTO>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</OSP/HOTEL_DETAILS_DTO>-CONTROLLER = 1.
</OSP/HOTEL_DETAILS_DTO>-BOOKING_NUMBER = 1.
</OSP/HOTEL_DETAILS_DTO>-BOOKING_STATUS = 1.
</OSP/HOTEL_DETAILS_DTO>-CHECK_INDATE = 1.
</OSP/HOTEL_DETAILS_DTO>-CHECK_OUT_DATE = 1.

ENDLOOP.

LOOP AT IT_/OSP/HOTEL_DETAILS_DTO INTO WA_/OSP/HOTEL_DETAILS_DTO.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/OSP/HOTEL_DETAILS_DTO-DISTANCE_FROM_AIRPORT, sy-vline,
  WA_/OSP/HOTEL_DETAILS_DTO-FAX, sy-vline,
  WA_/OSP/HOTEL_DETAILS_DTO-HOTEL_BUFFER1, sy-vline,
  WA_/OSP/HOTEL_DETAILS_DTO-HOTEL_BUFFER2, sy-vline,
  WA_/OSP/HOTEL_DETAILS_DTO-HOTEL_BUFFER3, sy-vline,
  WA_/OSP/HOTEL_DETAILS_DTO-HOTEL_BUFFER4, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/OSP/HOTEL_DETAILS_DTO 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_/OSP/HOTEL_DETAILS_DTO 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_/OSP/HOTEL_DETAILS_DTO INTO WA_/OSP/HOTEL_DETAILS_DTO.


*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_/OSP/HOTEL_DETAILS_DTO_STR, 
CONTROLLER TYPE STRING,
BOOKING_NUMBER TYPE STRING,
BOOKING_STATUS TYPE STRING,
CHECK_INDATE TYPE STRING,
CHECK_OUT_DATE TYPE STRING,
DISTANCE_FROM_AIRPORT TYPE STRING,
FAX TYPE STRING,
HOTEL_BUFFER1 TYPE STRING,
HOTEL_BUFFER2 TYPE STRING,
HOTEL_BUFFER3 TYPE STRING,
HOTEL_BUFFER4 TYPE STRING,
HOTEL_BUFFER5 TYPE STRING,
HOTEL_CHAIN TYPE STRING,
HOTEL_LOCATION TYPE STRING,
HOTEL_NAME TYPE STRING,
RATE_PER_NIGHT TYPE STRING,
CONTROLLER TYPE STRING,
CURRENCY_CODE TYPE STRING,
VALUE TYPE STRING,
ROOM_TYPE TYPE STRING,
TELEPHONE_NUMBER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/OSP/HOTEL_DETAILS_DTO_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_/OSP/HOTEL_DETAILS_DTO_STR-CONTROLLER sy-vline 
WA_/OSP/HOTEL_DETAILS_DTO_STR-BOOKING_NUMBER sy-vline 
WA_/OSP/HOTEL_DETAILS_DTO_STR-BOOKING_STATUS sy-vline 
WA_/OSP/HOTEL_DETAILS_DTO_STR-CHECK_INDATE sy-vline 
WA_/OSP/HOTEL_DETAILS_DTO_STR-CHECK_OUT_DATE sy-vline 
WA_/OSP/HOTEL_DETAILS_DTO_STR-DISTANCE_FROM_AIRPORT sy-vline 
WA_/OSP/HOTEL_DETAILS_DTO_STR-FAX sy-vline 
WA_/OSP/HOTEL_DETAILS_DTO_STR-HOTEL_BUFFER1 sy-vline 
WA_/OSP/HOTEL_DETAILS_DTO_STR-HOTEL_BUFFER2 sy-vline 
WA_/OSP/HOTEL_DETAILS_DTO_STR-HOTEL_BUFFER3 sy-vline 
WA_/OSP/HOTEL_DETAILS_DTO_STR-HOTEL_BUFFER4 sy-vline 
WA_/OSP/HOTEL_DETAILS_DTO_STR-HOTEL_BUFFER5 sy-vline 
WA_/OSP/HOTEL_DETAILS_DTO_STR-HOTEL_CHAIN sy-vline 
WA_/OSP/HOTEL_DETAILS_DTO_STR-HOTEL_LOCATION sy-vline 
WA_/OSP/HOTEL_DETAILS_DTO_STR-HOTEL_NAME sy-vline 
WA_/OSP/HOTEL_DETAILS_DTO_STR-RATE_PER_NIGHT sy-vline 
WA_/OSP/HOTEL_DETAILS_DTO_STR-CONTROLLER sy-vline 
WA_/OSP/HOTEL_DETAILS_DTO_STR-CURRENCY_CODE sy-vline 
WA_/OSP/HOTEL_DETAILS_DTO_STR-VALUE sy-vline 
WA_/OSP/HOTEL_DETAILS_DTO_STR-ROOM_TYPE sy-vline 
WA_/OSP/HOTEL_DETAILS_DTO_STR-TELEPHONE_NUMBER sy-vline      INTO ld_text SEPARATED BY SPACE.

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