ABAP Select data from SAP table FTPS_API_AIR_FLIGHT_SEG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FTPS_API_AIR_FLIGHT_SEG
*  INTO TABLE @DATA(IT_FTPS_API_AIR_FLIGHT_SEG2).
*--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_FTPS_API_AIR_FLIGHT_SEG INDEX 1 INTO DATA(WA_FTPS_API_AIR_FLIGHT_SEG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FTPS_API_AIR_FLIGHT_SEG>-INDEX_TABLE = 1.
<FTPS_API_AIR_FLIGHT_SEG>-INDEX_XREF = 1.
<FTPS_API_AIR_FLIGHT_SEG>-TKT_SEG_IND = 1.
<FTPS_API_AIR_FLIGHT_SEG>-FLIGHT_SEG_TYPE = 1.
<FTPS_API_AIR_FLIGHT_SEG>-TATTOO_NB = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FTPS_API_AIR_FLIGHT_SEG-DISPLAY_NB, sy-vline,
  WA_FTPS_API_AIR_FLIGHT_SEG-OPEN_SEG_IND, sy-vline,
  WA_FTPS_API_AIR_FLIGHT_SEG-STOPOVER_IND, sy-vline,
  WA_FTPS_API_AIR_FLIGHT_SEG-DEPARTURE_ARPT, sy-vline,
  WA_FTPS_API_AIR_FLIGHT_SEG-ARRIVAL_ARPT, sy-vline,
  WA_FTPS_API_AIR_FLIGHT_SEG-AIRLINE_CODE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FTPS_API_AIR_FLIGHT_SEG 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_FTPS_API_AIR_FLIGHT_SEG 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_FTPS_API_AIR_FLIGHT_SEG INTO WA_FTPS_API_AIR_FLIGHT_SEG.


*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_FTPS_API_AIR_FLIGHT_SEG_STR, 
INDEX_TABLE TYPE STRING,
INDEX_XREF TYPE STRING,
TKT_SEG_IND TYPE STRING,
FLIGHT_SEG_TYPE TYPE STRING,
TATTOO_NB TYPE STRING,
DISPLAY_NB TYPE STRING,
OPEN_SEG_IND TYPE STRING,
STOPOVER_IND TYPE STRING,
DEPARTURE_ARPT TYPE STRING,
ARRIVAL_ARPT TYPE STRING,
AIRLINE_CODE TYPE STRING,
FLIGHT_NB TYPE STRING,
CLASS_OF_SERVICE TYPE STRING,
CLASS_OF_BOOKING TYPE STRING,
DEPARTURE_DATE TYPE STRING,
DEPARTURE_TIME TYPE STRING,
ARRIVAL_DATE TYPE STRING,
ARRIVAL_TIME TYPE STRING,
RAW_STATUS_CODE TYPE STRING,
MEAL_CODE TYPE STRING,
NB_OF_STOPS TYPE STRING,
EQUIPMENT_TYPE TYPE STRING,
ENTERTAIN_CODE TYPE STRING,
BAG_ALLOWANCE TYPE STRING,
CHECK_IN_TERM TYPE STRING,
CHECK_IN_TIME TYPE STRING,
E_TKT_IND TYPE STRING,
FLIGHT_DURATION TYPE STRING,
NON_SMOKING_IND TYPE STRING,
SHARED_COMM_CXR TYPE STRING,
TOUR_SEGMENT_TAG TYPE STRING,
FLOWN_IND TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FTPS_API_AIR_FLIGHT_SEG_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_FTPS_API_AIR_FLIGHT_SEG_STR-INDEX_TABLE sy-vline 
WA_FTPS_API_AIR_FLIGHT_SEG_STR-INDEX_XREF sy-vline 
WA_FTPS_API_AIR_FLIGHT_SEG_STR-TKT_SEG_IND sy-vline 
WA_FTPS_API_AIR_FLIGHT_SEG_STR-FLIGHT_SEG_TYPE sy-vline 
WA_FTPS_API_AIR_FLIGHT_SEG_STR-TATTOO_NB sy-vline 
WA_FTPS_API_AIR_FLIGHT_SEG_STR-DISPLAY_NB sy-vline 
WA_FTPS_API_AIR_FLIGHT_SEG_STR-OPEN_SEG_IND sy-vline 
WA_FTPS_API_AIR_FLIGHT_SEG_STR-STOPOVER_IND sy-vline 
WA_FTPS_API_AIR_FLIGHT_SEG_STR-DEPARTURE_ARPT sy-vline 
WA_FTPS_API_AIR_FLIGHT_SEG_STR-ARRIVAL_ARPT sy-vline 
WA_FTPS_API_AIR_FLIGHT_SEG_STR-AIRLINE_CODE sy-vline 
WA_FTPS_API_AIR_FLIGHT_SEG_STR-FLIGHT_NB sy-vline 
WA_FTPS_API_AIR_FLIGHT_SEG_STR-CLASS_OF_SERVICE sy-vline 
WA_FTPS_API_AIR_FLIGHT_SEG_STR-CLASS_OF_BOOKING sy-vline 
WA_FTPS_API_AIR_FLIGHT_SEG_STR-DEPARTURE_DATE sy-vline 
WA_FTPS_API_AIR_FLIGHT_SEG_STR-DEPARTURE_TIME sy-vline 
WA_FTPS_API_AIR_FLIGHT_SEG_STR-ARRIVAL_DATE sy-vline 
WA_FTPS_API_AIR_FLIGHT_SEG_STR-ARRIVAL_TIME sy-vline 
WA_FTPS_API_AIR_FLIGHT_SEG_STR-RAW_STATUS_CODE sy-vline 
WA_FTPS_API_AIR_FLIGHT_SEG_STR-MEAL_CODE sy-vline 
WA_FTPS_API_AIR_FLIGHT_SEG_STR-NB_OF_STOPS sy-vline 
WA_FTPS_API_AIR_FLIGHT_SEG_STR-EQUIPMENT_TYPE sy-vline 
WA_FTPS_API_AIR_FLIGHT_SEG_STR-ENTERTAIN_CODE sy-vline 
WA_FTPS_API_AIR_FLIGHT_SEG_STR-BAG_ALLOWANCE sy-vline 
WA_FTPS_API_AIR_FLIGHT_SEG_STR-CHECK_IN_TERM sy-vline 
WA_FTPS_API_AIR_FLIGHT_SEG_STR-CHECK_IN_TIME sy-vline 
WA_FTPS_API_AIR_FLIGHT_SEG_STR-E_TKT_IND sy-vline 
WA_FTPS_API_AIR_FLIGHT_SEG_STR-FLIGHT_DURATION sy-vline 
WA_FTPS_API_AIR_FLIGHT_SEG_STR-NON_SMOKING_IND sy-vline 
WA_FTPS_API_AIR_FLIGHT_SEG_STR-SHARED_COMM_CXR sy-vline 
WA_FTPS_API_AIR_FLIGHT_SEG_STR-TOUR_SEGMENT_TAG sy-vline 
WA_FTPS_API_AIR_FLIGHT_SEG_STR-FLOWN_IND sy-vline      INTO ld_text SEPARATED BY SPACE.

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