ABAP Select data from SAP table SCOL_REF_FLIGHT_CACHE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SCOL_REF_FLIGHT_CACHE
*  INTO TABLE @DATA(IT_SCOL_REF_FLIGHT_CACHE2).
*--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_SCOL_REF_FLIGHT_CACHE INDEX 1 INTO DATA(WA_SCOL_REF_FLIGHT_CACHE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SCOL_REF_FLIGHT_CACHE>-CARRID = 1.
<SCOL_REF_FLIGHT_CACHE>-CONNID = 1.
<SCOL_REF_FLIGHT_CACHE>-FLDATE = 1.
<SCOL_REF_FLIGHT_CACHE>-CARRNAME = 1.
<SCOL_REF_FLIGHT_CACHE>-CITYFROM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SCOL_REF_FLIGHT_CACHE-AIRPFROM, sy-vline,
  WA_SCOL_REF_FLIGHT_CACHE-COUNTRYFR, sy-vline,
  WA_SCOL_REF_FLIGHT_CACHE-CITYTO, sy-vline,
  WA_SCOL_REF_FLIGHT_CACHE-AIRPTO, sy-vline,
  WA_SCOL_REF_FLIGHT_CACHE-COUNTRYTO, sy-vline,
  WA_SCOL_REF_FLIGHT_CACHE-DEPTIME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SCOL_REF_FLIGHT_CACHE 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_SCOL_REF_FLIGHT_CACHE 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_SCOL_REF_FLIGHT_CACHE INTO WA_SCOL_REF_FLIGHT_CACHE.


*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_SCOL_REF_FLIGHT_CACHE-FLTIME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SCOL_REF_FLIGHT_CACHE-FLTIME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field DISTID
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_SCOL_REF_FLIGHT_CACHE-DISTID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SCOL_REF_FLIGHT_CACHE-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_SCOL_REF_FLIGHT_CACHE_STR, 
CARRID TYPE STRING,
CONNID TYPE STRING,
FLDATE TYPE STRING,
CARRNAME TYPE STRING,
CITYFROM TYPE STRING,
AIRPFROM TYPE STRING,
COUNTRYFR TYPE STRING,
CITYTO TYPE STRING,
AIRPTO TYPE STRING,
COUNTRYTO TYPE STRING,
DEPTIME TYPE STRING,
FLTIME TYPE STRING,
ARRTIME TYPE STRING,
PERIOD TYPE STRING,
DISTANCE TYPE STRING,
DISTID TYPE STRING,
FLTYPE TYPE STRING,
PRICE TYPE STRING,
CURRENCY TYPE STRING,
PLANETYPE TYPE STRING,
UPDATE_FLAG TYPE STRING,
ENQUEUE_STATE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SCOL_REF_FLIGHT_CACHE_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_SCOL_REF_FLIGHT_CACHE_STR-CARRID sy-vline 
WA_SCOL_REF_FLIGHT_CACHE_STR-CONNID sy-vline 
WA_SCOL_REF_FLIGHT_CACHE_STR-FLDATE sy-vline 
WA_SCOL_REF_FLIGHT_CACHE_STR-CARRNAME sy-vline 
WA_SCOL_REF_FLIGHT_CACHE_STR-CITYFROM sy-vline 
WA_SCOL_REF_FLIGHT_CACHE_STR-AIRPFROM sy-vline 
WA_SCOL_REF_FLIGHT_CACHE_STR-COUNTRYFR sy-vline 
WA_SCOL_REF_FLIGHT_CACHE_STR-CITYTO sy-vline 
WA_SCOL_REF_FLIGHT_CACHE_STR-AIRPTO sy-vline 
WA_SCOL_REF_FLIGHT_CACHE_STR-COUNTRYTO sy-vline 
WA_SCOL_REF_FLIGHT_CACHE_STR-DEPTIME sy-vline 
WA_SCOL_REF_FLIGHT_CACHE_STR-FLTIME sy-vline 
WA_SCOL_REF_FLIGHT_CACHE_STR-ARRTIME sy-vline 
WA_SCOL_REF_FLIGHT_CACHE_STR-PERIOD sy-vline 
WA_SCOL_REF_FLIGHT_CACHE_STR-DISTANCE sy-vline 
WA_SCOL_REF_FLIGHT_CACHE_STR-DISTID sy-vline 
WA_SCOL_REF_FLIGHT_CACHE_STR-FLTYPE sy-vline 
WA_SCOL_REF_FLIGHT_CACHE_STR-PRICE sy-vline 
WA_SCOL_REF_FLIGHT_CACHE_STR-CURRENCY sy-vline 
WA_SCOL_REF_FLIGHT_CACHE_STR-PLANETYPE sy-vline 
WA_SCOL_REF_FLIGHT_CACHE_STR-UPDATE_FLAG sy-vline 
WA_SCOL_REF_FLIGHT_CACHE_STR-ENQUEUE_STATE sy-vline      INTO ld_text SEPARATED BY SPACE.

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