ABAP Select data from SAP table YCHSTRUK_FLUGAUSWERT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM YCHSTRUK_FLUGAUSWERT
*  INTO TABLE @DATA(IT_YCHSTRUK_FLUGAUSWERT2).
*--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_YCHSTRUK_FLUGAUSWERT INDEX 1 INTO DATA(WA_YCHSTRUK_FLUGAUSWERT2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_YCHSTRUK_FLUGAUSWERT-CITYFROM, sy-vline,
  WA_YCHSTRUK_FLUGAUSWERT-CITYTO, sy-vline,
  WA_YCHSTRUK_FLUGAUSWERT-SEATSMAX, sy-vline,
  WA_YCHSTRUK_FLUGAUSWERT-SEATSOCC, sy-vline,
  WA_YCHSTRUK_FLUGAUSWERT-PRODUCER, sy-vline,
  WA_YCHSTRUK_FLUGAUSWERT-SEATSFREE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_YCHSTRUK_FLUGAUSWERT 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_YCHSTRUK_FLUGAUSWERT 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_YCHSTRUK_FLUGAUSWERT INTO WA_YCHSTRUK_FLUGAUSWERT.


*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_YCHSTRUK_FLUGAUSWERT_STR, 
CARRID TYPE STRING,
CONNID TYPE STRING,
FLDATE TYPE STRING,
PLANETYPE TYPE STRING,
CARRNAME TYPE STRING,
CITYFROM TYPE STRING,
CITYTO TYPE STRING,
SEATSMAX TYPE STRING,
SEATSOCC TYPE STRING,
PRODUCER TYPE STRING,
SEATSFREE TYPE STRING,
PROZENT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_YCHSTRUK_FLUGAUSWERT_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_YCHSTRUK_FLUGAUSWERT_STR-CARRID sy-vline 
WA_YCHSTRUK_FLUGAUSWERT_STR-CONNID sy-vline 
WA_YCHSTRUK_FLUGAUSWERT_STR-FLDATE sy-vline 
WA_YCHSTRUK_FLUGAUSWERT_STR-PLANETYPE sy-vline 
WA_YCHSTRUK_FLUGAUSWERT_STR-CARRNAME sy-vline 
WA_YCHSTRUK_FLUGAUSWERT_STR-CITYFROM sy-vline 
WA_YCHSTRUK_FLUGAUSWERT_STR-CITYTO sy-vline 
WA_YCHSTRUK_FLUGAUSWERT_STR-SEATSMAX sy-vline 
WA_YCHSTRUK_FLUGAUSWERT_STR-SEATSOCC sy-vline 
WA_YCHSTRUK_FLUGAUSWERT_STR-PRODUCER sy-vline 
WA_YCHSTRUK_FLUGAUSWERT_STR-SEATSFREE sy-vline 
WA_YCHSTRUK_FLUGAUSWERT_STR-PROZENT sy-vline      INTO ld_text SEPARATED BY SPACE.

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