ABAP Select data from SAP table FTPS_WEB_FLIGHT_PREF_INPUT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FTPS_WEB_FLIGHT_PREF_INPUT 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_WEB_FLIGHT_PREF_INPUT. 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_WEB_FLIGHT_PREF_INPUT 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_WEB_FLIGHT_PREF_INPUT TYPE STANDARD TABLE OF FTPS_WEB_FLIGHT_PREF_INPUT,
      WA_FTPS_WEB_FLIGHT_PREF_INPUT TYPE FTPS_WEB_FLIGHT_PREF_INPUT,
      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_WEB_FLIGHT_PREF_INPUT> TYPE FTPS_WEB_FLIGHT_PREF_INPUT.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FTPS_WEB_FLIGHT_PREF_INPUT
*  INTO TABLE @DATA(IT_FTPS_WEB_FLIGHT_PREF_INPUT2).
*--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_WEB_FLIGHT_PREF_INPUT INDEX 1 INTO DATA(WA_FTPS_WEB_FLIGHT_PREF_INPUT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FTPS_WEB_FLIGHT_PREF_INPUT>-SMOKE = 1.
<FTPS_WEB_FLIGHT_PREF_INPUT>-SEATP = 1.
<FTPS_WEB_FLIGHT_PREF_INPUT>-BHEAD = 1.
<FTPS_WEB_FLIGHT_PREF_INPUT>-MEALS = 1.
<FTPS_WEB_FLIGHT_PREF_INPUT>-HDCAP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FTPS_WEB_FLIGHT_PREF_INPUT-HDCAP_DESCR, sy-vline,
  WA_FTPS_WEB_FLIGHT_PREF_INPUT-MEDIC, sy-vline,
  WA_FTPS_WEB_FLIGHT_PREF_INPUT-MEDIC_DESCR, sy-vline,
  WA_FTPS_WEB_FLIGHT_PREF_INPUT-MINOR, sy-vline,
  WA_FTPS_WEB_FLIGHT_PREF_INPUT-INFAN, sy-vline,
  WA_FTPS_WEB_FLIGHT_PREF_INPUT-PREF1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FTPS_WEB_FLIGHT_PREF_INPUT 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_WEB_FLIGHT_PREF_INPUT 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_WEB_FLIGHT_PREF_INPUT INTO WA_FTPS_WEB_FLIGHT_PREF_INPUT.


*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_WEB_FLIGHT_PREF_INPUT_STR, 
SMOKE TYPE STRING,
SEATP TYPE STRING,
BHEAD TYPE STRING,
MEALS TYPE STRING,
HDCAP TYPE STRING,
HDCAP_DESCR TYPE STRING,
MEDIC TYPE STRING,
MEDIC_DESCR TYPE STRING,
MINOR TYPE STRING,
INFAN TYPE STRING,
PREF1 TYPE STRING,
PREF2 TYPE STRING,
PREF3 TYPE STRING,
DEFAP TYPE STRING,
BLIND TYPE STRING,
DEAF TYPE STRING,
ASIST TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FTPS_WEB_FLIGHT_PREF_INPUT_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_WEB_FLIGHT_PREF_INPUT_STR-SMOKE sy-vline 
WA_FTPS_WEB_FLIGHT_PREF_INPUT_STR-SEATP sy-vline 
WA_FTPS_WEB_FLIGHT_PREF_INPUT_STR-BHEAD sy-vline 
WA_FTPS_WEB_FLIGHT_PREF_INPUT_STR-MEALS sy-vline 
WA_FTPS_WEB_FLIGHT_PREF_INPUT_STR-HDCAP sy-vline 
WA_FTPS_WEB_FLIGHT_PREF_INPUT_STR-HDCAP_DESCR sy-vline 
WA_FTPS_WEB_FLIGHT_PREF_INPUT_STR-MEDIC sy-vline 
WA_FTPS_WEB_FLIGHT_PREF_INPUT_STR-MEDIC_DESCR sy-vline 
WA_FTPS_WEB_FLIGHT_PREF_INPUT_STR-MINOR sy-vline 
WA_FTPS_WEB_FLIGHT_PREF_INPUT_STR-INFAN sy-vline 
WA_FTPS_WEB_FLIGHT_PREF_INPUT_STR-PREF1 sy-vline 
WA_FTPS_WEB_FLIGHT_PREF_INPUT_STR-PREF2 sy-vline 
WA_FTPS_WEB_FLIGHT_PREF_INPUT_STR-PREF3 sy-vline 
WA_FTPS_WEB_FLIGHT_PREF_INPUT_STR-DEFAP sy-vline 
WA_FTPS_WEB_FLIGHT_PREF_INPUT_STR-BLIND sy-vline 
WA_FTPS_WEB_FLIGHT_PREF_INPUT_STR-DEAF sy-vline 
WA_FTPS_WEB_FLIGHT_PREF_INPUT_STR-ASIST sy-vline      INTO ld_text SEPARATED BY SPACE.

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