ABAP Select data from SAP table BAPI_MY_TRIPS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BAPI_MY_TRIPS
*  INTO TABLE @DATA(IT_BAPI_MY_TRIPS2).
*--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_BAPI_MY_TRIPS INDEX 1 INTO DATA(WA_BAPI_MY_TRIPS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BAPI_MY_TRIPS>-EMPLOYEENUMBER = 1.
<BAPI_MY_TRIPS>-TRIPNUMBER = 1.
<BAPI_MY_TRIPS>-PERIOD = 1.
<BAPI_MY_TRIPS>-DEP_DATE = 1.
<BAPI_MY_TRIPS>-ARR_DATE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BAPI_MY_TRIPS-CUSTOMER, sy-vline,
  WA_BAPI_MY_TRIPS-LOCATION, sy-vline,
  WA_BAPI_MY_TRIPS-COUNTRY, sy-vline,
  WA_BAPI_MY_TRIPS-REIMBU_AMOUNT, sy-vline,
  WA_BAPI_MY_TRIPS-STATUS1, sy-vline,
  WA_BAPI_MY_TRIPS-LINK1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BAPI_MY_TRIPS 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_BAPI_MY_TRIPS 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_BAPI_MY_TRIPS INTO WA_BAPI_MY_TRIPS.


*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_BAPI_MY_TRIPS_STR, 
EMPLOYEENUMBER TYPE STRING,
TRIPNUMBER TYPE STRING,
PERIOD TYPE STRING,
DEP_DATE TYPE STRING,
ARR_DATE TYPE STRING,
CUSTOMER TYPE STRING,
LOCATION TYPE STRING,
COUNTRY TYPE STRING,
REIMBU_AMOUNT TYPE STRING,
STATUS1 TYPE STRING,
LINK1 TYPE STRING,
ALERT1 TYPE STRING,
STATUS2 TYPE STRING,
LINK2 TYPE STRING,
ALERT2 TYPE STRING,
STATUS3 TYPE STRING,
LINK3 TYPE STRING,
ALERT3 TYPE STRING,
STATUS4 TYPE STRING,
LINK4 TYPE STRING,
ALERT4 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BAPI_MY_TRIPS_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_BAPI_MY_TRIPS_STR-EMPLOYEENUMBER sy-vline 
WA_BAPI_MY_TRIPS_STR-TRIPNUMBER sy-vline 
WA_BAPI_MY_TRIPS_STR-PERIOD sy-vline 
WA_BAPI_MY_TRIPS_STR-DEP_DATE sy-vline 
WA_BAPI_MY_TRIPS_STR-ARR_DATE sy-vline 
WA_BAPI_MY_TRIPS_STR-CUSTOMER sy-vline 
WA_BAPI_MY_TRIPS_STR-LOCATION sy-vline 
WA_BAPI_MY_TRIPS_STR-COUNTRY sy-vline 
WA_BAPI_MY_TRIPS_STR-REIMBU_AMOUNT sy-vline 
WA_BAPI_MY_TRIPS_STR-STATUS1 sy-vline 
WA_BAPI_MY_TRIPS_STR-LINK1 sy-vline 
WA_BAPI_MY_TRIPS_STR-ALERT1 sy-vline 
WA_BAPI_MY_TRIPS_STR-STATUS2 sy-vline 
WA_BAPI_MY_TRIPS_STR-LINK2 sy-vline 
WA_BAPI_MY_TRIPS_STR-ALERT2 sy-vline 
WA_BAPI_MY_TRIPS_STR-STATUS3 sy-vline 
WA_BAPI_MY_TRIPS_STR-LINK3 sy-vline 
WA_BAPI_MY_TRIPS_STR-ALERT3 sy-vline 
WA_BAPI_MY_TRIPS_STR-STATUS4 sy-vline 
WA_BAPI_MY_TRIPS_STR-LINK4 sy-vline 
WA_BAPI_MY_TRIPS_STR-ALERT4 sy-vline      INTO ld_text SEPARATED BY SPACE.

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