ABAP Select data from SAP table /IWFND/SFLIGHT_FLIGHT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /IWFND/SFLIGHT_FLIGHT
*  INTO TABLE @DATA(IT_/IWFND/SFLIGHT_FLIGHT2).
*--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_/IWFND/SFLIGHT_FLIGHT INDEX 1 INTO DATA(WA_/IWFND/SFLIGHT_FLIGHT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</IWFND/SFLIGHT_FLIGHT>-FLIGHTDETAILS = 1.
</IWFND/SFLIGHT_FLIGHT>-COUNTRYFROM = 1.
</IWFND/SFLIGHT_FLIGHT>-CITYFROM = 1.
</IWFND/SFLIGHT_FLIGHT>-AIRPORTFROM = 1.
</IWFND/SFLIGHT_FLIGHT>-COUNTRYTO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/IWFND/SFLIGHT_FLIGHT-CITYTO, sy-vline,
  WA_/IWFND/SFLIGHT_FLIGHT-AIRPORTTO, sy-vline,
  WA_/IWFND/SFLIGHT_FLIGHT-FLIGHTTIME, sy-vline,
  WA_/IWFND/SFLIGHT_FLIGHT-DEPARTURETIME, sy-vline,
  WA_/IWFND/SFLIGHT_FLIGHT-ARRIVALTIME, sy-vline,
  WA_/IWFND/SFLIGHT_FLIGHT-DISTANCE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/IWFND/SFLIGHT_FLIGHT 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_/IWFND/SFLIGHT_FLIGHT 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_/IWFND/SFLIGHT_FLIGHT INTO WA_/IWFND/SFLIGHT_FLIGHT.


*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 SDURA, internal->external for field FLIGHTTIME
CALL FUNCTION 'CONVERSION_EXIT_SDURA_OUTPUT'
  EXPORTING
    input =                      WA_/IWFND/SFLIGHT_FLIGHT-FLIGHTTIME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/IWFND/SFLIGHT_FLIGHT-FLIGHTTIME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field DISTANCEUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/IWFND/SFLIGHT_FLIGHT-DISTANCEUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/IWFND/SFLIGHT_FLIGHT-DISTANCEUNIT.
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_/IWFND/SFLIGHT_FLIGHT_STR, 
FLIGHTDETAILS TYPE STRING,
COUNTRYFROM TYPE STRING,
CITYFROM TYPE STRING,
AIRPORTFROM TYPE STRING,
COUNTRYTO TYPE STRING,
CITYTO TYPE STRING,
AIRPORTTO TYPE STRING,
FLIGHTTIME TYPE STRING,
DEPARTURETIME TYPE STRING,
ARRIVALTIME TYPE STRING,
DISTANCE TYPE STRING,
DISTANCEUNIT TYPE STRING,
FLIGHTTYPE TYPE STRING,
PERIOD TYPE STRING,
CARRID TYPE STRING,
CONNID TYPE STRING,
FLDATE TYPE STRING,
PRICE TYPE STRING,
CURRENCY TYPE STRING,
PLANETYPE TYPE STRING,
SEATSMAX TYPE STRING,
SEATSOCC TYPE STRING,
PAYMENTSUM TYPE STRING,
SEATSMAX_B TYPE STRING,
SEATSOCC_B TYPE STRING,
SEATSMAX_F TYPE STRING,
SEATSOCC_F TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/IWFND/SFLIGHT_FLIGHT_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_/IWFND/SFLIGHT_FLIGHT_STR-FLIGHTDETAILS sy-vline 
WA_/IWFND/SFLIGHT_FLIGHT_STR-COUNTRYFROM sy-vline 
WA_/IWFND/SFLIGHT_FLIGHT_STR-CITYFROM sy-vline 
WA_/IWFND/SFLIGHT_FLIGHT_STR-AIRPORTFROM sy-vline 
WA_/IWFND/SFLIGHT_FLIGHT_STR-COUNTRYTO sy-vline 
WA_/IWFND/SFLIGHT_FLIGHT_STR-CITYTO sy-vline 
WA_/IWFND/SFLIGHT_FLIGHT_STR-AIRPORTTO sy-vline 
WA_/IWFND/SFLIGHT_FLIGHT_STR-FLIGHTTIME sy-vline 
WA_/IWFND/SFLIGHT_FLIGHT_STR-DEPARTURETIME sy-vline 
WA_/IWFND/SFLIGHT_FLIGHT_STR-ARRIVALTIME sy-vline 
WA_/IWFND/SFLIGHT_FLIGHT_STR-DISTANCE sy-vline 
WA_/IWFND/SFLIGHT_FLIGHT_STR-DISTANCEUNIT sy-vline 
WA_/IWFND/SFLIGHT_FLIGHT_STR-FLIGHTTYPE sy-vline 
WA_/IWFND/SFLIGHT_FLIGHT_STR-PERIOD sy-vline 
WA_/IWFND/SFLIGHT_FLIGHT_STR-CARRID sy-vline 
WA_/IWFND/SFLIGHT_FLIGHT_STR-CONNID sy-vline 
WA_/IWFND/SFLIGHT_FLIGHT_STR-FLDATE sy-vline 
WA_/IWFND/SFLIGHT_FLIGHT_STR-PRICE sy-vline 
WA_/IWFND/SFLIGHT_FLIGHT_STR-CURRENCY sy-vline 
WA_/IWFND/SFLIGHT_FLIGHT_STR-PLANETYPE sy-vline 
WA_/IWFND/SFLIGHT_FLIGHT_STR-SEATSMAX sy-vline 
WA_/IWFND/SFLIGHT_FLIGHT_STR-SEATSOCC sy-vline 
WA_/IWFND/SFLIGHT_FLIGHT_STR-PAYMENTSUM sy-vline 
WA_/IWFND/SFLIGHT_FLIGHT_STR-SEATSMAX_B sy-vline 
WA_/IWFND/SFLIGHT_FLIGHT_STR-SEATSOCC_B sy-vline 
WA_/IWFND/SFLIGHT_FLIGHT_STR-SEATSMAX_F sy-vline 
WA_/IWFND/SFLIGHT_FLIGHT_STR-SEATSOCC_F sy-vline      INTO ld_text SEPARATED BY SPACE.

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