ABAP Select data from SAP table CRMS_UIF_TRAVEL_FLIGHT_API into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CRMS_UIF_TRAVEL_FLIGHT_API
*  INTO TABLE @DATA(IT_CRMS_UIF_TRAVEL_FLIGHT_API2).
*--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_CRMS_UIF_TRAVEL_FLIGHT_API INDEX 1 INTO DATA(WA_CRMS_UIF_TRAVEL_FLIGHT_API2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CRMS_UIF_TRAVEL_FLIGHT_API>-CARRID = 1.
<CRMS_UIF_TRAVEL_FLIGHT_API>-CONNID = 1.
<CRMS_UIF_TRAVEL_FLIGHT_API>-FLDATE = 1.
<CRMS_UIF_TRAVEL_FLIGHT_API>-PRICE = 1.
<CRMS_UIF_TRAVEL_FLIGHT_API>-CURRENCY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CRMS_UIF_TRAVEL_FLIGHT_API-PLANETYPE, sy-vline,
  WA_CRMS_UIF_TRAVEL_FLIGHT_API-SEATSMAX, sy-vline,
  WA_CRMS_UIF_TRAVEL_FLIGHT_API-SEATSOCC, sy-vline,
  WA_CRMS_UIF_TRAVEL_FLIGHT_API-PAYMENTSUM, sy-vline,
  WA_CRMS_UIF_TRAVEL_FLIGHT_API-SEATSMAX_B, sy-vline,
  WA_CRMS_UIF_TRAVEL_FLIGHT_API-SEATSOCC_B, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CRMS_UIF_TRAVEL_FLIGHT_API 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_CRMS_UIF_TRAVEL_FLIGHT_API 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_CRMS_UIF_TRAVEL_FLIGHT_API INTO WA_CRMS_UIF_TRAVEL_FLIGHT_API.


*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 FLTIME
CALL FUNCTION 'CONVERSION_EXIT_SDURA_OUTPUT'
  EXPORTING
    input =                      WA_CRMS_UIF_TRAVEL_FLIGHT_API-FLTIME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRMS_UIF_TRAVEL_FLIGHT_API-FLTIME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field DISTID
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CRMS_UIF_TRAVEL_FLIGHT_API-DISTID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRMS_UIF_TRAVEL_FLIGHT_API-DISTID.
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_CRMS_UIF_TRAVEL_FLIGHT_API_STR, 
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,
COUNTRYFR TYPE STRING,
CITYFROM TYPE STRING,
AIRPFROM TYPE STRING,
COUNTRYTO TYPE STRING,
CITYTO TYPE STRING,
AIRPTO TYPE STRING,
FLTIME TYPE STRING,
DEPTIME TYPE STRING,
ARRTIME TYPE STRING,
DISTANCE TYPE STRING,
DISTID TYPE STRING,
FLTYPE TYPE STRING,
PERIOD TYPE STRING,
SFLIGHT_DUMMY TYPE STRING,
CRTE_FLAG TYPE STRING,
MODIFY_FLAG TYPE STRING,
DELETE_FLAG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CRMS_UIF_TRAVEL_FLIGHT_API_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_CRMS_UIF_TRAVEL_FLIGHT_API_STR-CARRID sy-vline 
WA_CRMS_UIF_TRAVEL_FLIGHT_API_STR-CONNID sy-vline 
WA_CRMS_UIF_TRAVEL_FLIGHT_API_STR-FLDATE sy-vline 
WA_CRMS_UIF_TRAVEL_FLIGHT_API_STR-PRICE sy-vline 
WA_CRMS_UIF_TRAVEL_FLIGHT_API_STR-CURRENCY sy-vline 
WA_CRMS_UIF_TRAVEL_FLIGHT_API_STR-PLANETYPE sy-vline 
WA_CRMS_UIF_TRAVEL_FLIGHT_API_STR-SEATSMAX sy-vline 
WA_CRMS_UIF_TRAVEL_FLIGHT_API_STR-SEATSOCC sy-vline 
WA_CRMS_UIF_TRAVEL_FLIGHT_API_STR-PAYMENTSUM sy-vline 
WA_CRMS_UIF_TRAVEL_FLIGHT_API_STR-SEATSMAX_B sy-vline 
WA_CRMS_UIF_TRAVEL_FLIGHT_API_STR-SEATSOCC_B sy-vline 
WA_CRMS_UIF_TRAVEL_FLIGHT_API_STR-SEATSMAX_F sy-vline 
WA_CRMS_UIF_TRAVEL_FLIGHT_API_STR-SEATSOCC_F sy-vline 
WA_CRMS_UIF_TRAVEL_FLIGHT_API_STR-COUNTRYFR sy-vline 
WA_CRMS_UIF_TRAVEL_FLIGHT_API_STR-CITYFROM sy-vline 
WA_CRMS_UIF_TRAVEL_FLIGHT_API_STR-AIRPFROM sy-vline 
WA_CRMS_UIF_TRAVEL_FLIGHT_API_STR-COUNTRYTO sy-vline 
WA_CRMS_UIF_TRAVEL_FLIGHT_API_STR-CITYTO sy-vline 
WA_CRMS_UIF_TRAVEL_FLIGHT_API_STR-AIRPTO sy-vline 
WA_CRMS_UIF_TRAVEL_FLIGHT_API_STR-FLTIME sy-vline 
WA_CRMS_UIF_TRAVEL_FLIGHT_API_STR-DEPTIME sy-vline 
WA_CRMS_UIF_TRAVEL_FLIGHT_API_STR-ARRTIME sy-vline 
WA_CRMS_UIF_TRAVEL_FLIGHT_API_STR-DISTANCE sy-vline 
WA_CRMS_UIF_TRAVEL_FLIGHT_API_STR-DISTID sy-vline 
WA_CRMS_UIF_TRAVEL_FLIGHT_API_STR-FLTYPE sy-vline 
WA_CRMS_UIF_TRAVEL_FLIGHT_API_STR-PERIOD sy-vline 
WA_CRMS_UIF_TRAVEL_FLIGHT_API_STR-SFLIGHT_DUMMY sy-vline 
WA_CRMS_UIF_TRAVEL_FLIGHT_API_STR-CRTE_FLAG sy-vline 
WA_CRMS_UIF_TRAVEL_FLIGHT_API_STR-MODIFY_FLAG sy-vline 
WA_CRMS_UIF_TRAVEL_FLIGHT_API_STR-DELETE_FLAG sy-vline      INTO ld_text SEPARATED BY SPACE.

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