ABAP Select data from SAP table V_FLIGHT_B into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_FLIGHT_B
*  INTO TABLE @DATA(IT_V_FLIGHT_B2).
*--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_V_FLIGHT_B INDEX 1 INTO DATA(WA_V_FLIGHT_B2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_FLIGHT_B>-MANDT = 1.
<V_FLIGHT_B>-PERNR = 1.
<V_FLIGHT_B>-REINR = 1.
<V_FLIGHT_B>-PLANNR = 1.
<V_FLIGHT_B>-DESTINATION = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_FLIGHT_B-REASON, sy-vline,
  WA_V_FLIGHT_B-STATUS, sy-vline,
  WA_V_FLIGHT_B-VARIANT, sy-vline,
  WA_V_FLIGHT_B-VARIANTVRS, sy-vline,
  WA_V_FLIGHT_B-NAME, sy-vline,
  WA_V_FLIGHT_B-VAR_STATUS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_FLIGHT_B 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_V_FLIGHT_B 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_V_FLIGHT_B INTO WA_V_FLIGHT_B.


*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_V_FLIGHT_B_STR, 
MANDT TYPE STRING,
PERNR TYPE STRING,
REINR TYPE STRING,
PLANNR TYPE STRING,
DESTINATION TYPE STRING,
REASON TYPE STRING,
STATUS TYPE STRING,
VARIANT TYPE STRING,
VARIANTVRS TYPE STRING,
NAME TYPE STRING,
VAR_STATUS TYPE STRING,
BOOK_REQUEST TYPE STRING,
AIRLINE TYPE STRING,
FLIGHT_NR TYPE STRING,
DATE_DEP TYPE STRING,
TIME_DEP TYPE STRING,
LOC_DEP TYPE STRING,
DATE_ARR TYPE STRING,
TIME_ARR TYPE STRING,
LOC_ARR TYPE STRING,
FLI_STATUS TYPE STRING,
STOP_OVER TYPE STRING,
L_TIME_ARR TYPE STRING,
L_TIME_DEP TYPE STRING,
STOP_OVER_TIME TYPE STRING,
ITEM TYPE STRING,
SERVICE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_FLIGHT_B_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_V_FLIGHT_B_STR-MANDT sy-vline 
WA_V_FLIGHT_B_STR-PERNR sy-vline 
WA_V_FLIGHT_B_STR-REINR sy-vline 
WA_V_FLIGHT_B_STR-PLANNR sy-vline 
WA_V_FLIGHT_B_STR-DESTINATION sy-vline 
WA_V_FLIGHT_B_STR-REASON sy-vline 
WA_V_FLIGHT_B_STR-STATUS sy-vline 
WA_V_FLIGHT_B_STR-VARIANT sy-vline 
WA_V_FLIGHT_B_STR-VARIANTVRS sy-vline 
WA_V_FLIGHT_B_STR-NAME sy-vline 
WA_V_FLIGHT_B_STR-VAR_STATUS sy-vline 
WA_V_FLIGHT_B_STR-BOOK_REQUEST sy-vline 
WA_V_FLIGHT_B_STR-AIRLINE sy-vline 
WA_V_FLIGHT_B_STR-FLIGHT_NR sy-vline 
WA_V_FLIGHT_B_STR-DATE_DEP sy-vline 
WA_V_FLIGHT_B_STR-TIME_DEP sy-vline 
WA_V_FLIGHT_B_STR-LOC_DEP sy-vline 
WA_V_FLIGHT_B_STR-DATE_ARR sy-vline 
WA_V_FLIGHT_B_STR-TIME_ARR sy-vline 
WA_V_FLIGHT_B_STR-LOC_ARR sy-vline 
WA_V_FLIGHT_B_STR-FLI_STATUS sy-vline 
WA_V_FLIGHT_B_STR-STOP_OVER sy-vline 
WA_V_FLIGHT_B_STR-L_TIME_ARR sy-vline 
WA_V_FLIGHT_B_STR-L_TIME_DEP sy-vline 
WA_V_FLIGHT_B_STR-STOP_OVER_TIME sy-vline 
WA_V_FLIGHT_B_STR-ITEM sy-vline 
WA_V_FLIGHT_B_STR-SERVICE sy-vline      INTO ld_text SEPARATED BY SPACE.

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