ABAP Select data from SAP table /OSP/S_TRIP_EXPENSE_DETAIL into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /OSP/S_TRIP_EXPENSE_DETAIL 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 /OSP/S_TRIP_EXPENSE_DETAIL. 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 /OSP/S_TRIP_EXPENSE_DETAIL 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_/OSP/S_TRIP_EXPENSE_DETAIL TYPE STANDARD TABLE OF /OSP/S_TRIP_EXPENSE_DETAIL,
      WA_/OSP/S_TRIP_EXPENSE_DETAIL TYPE /OSP/S_TRIP_EXPENSE_DETAIL,
      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: </OSP/S_TRIP_EXPENSE_DETAIL> TYPE /OSP/S_TRIP_EXPENSE_DETAIL.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /OSP/S_TRIP_EXPENSE_DETAIL
  INTO TABLE IT_/OSP/S_TRIP_EXPENSE_DETAIL.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /OSP/S_TRIP_EXPENSE_DETAIL
*  INTO TABLE @DATA(IT_/OSP/S_TRIP_EXPENSE_DETAIL2).
*--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_/OSP/S_TRIP_EXPENSE_DETAIL INDEX 1 INTO DATA(WA_/OSP/S_TRIP_EXPENSE_DETAIL2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/OSP/S_TRIP_EXPENSE_DETAIL ASSIGNING </OSP/S_TRIP_EXPENSE_DETAIL>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</OSP/S_TRIP_EXPENSE_DETAIL>-EMPLOYEE_NAME = 1.
</OSP/S_TRIP_EXPENSE_DETAIL>-EMPLOYEE_ID = 1.
</OSP/S_TRIP_EXPENSE_DETAIL>-EMPLOYEE_R3NAME = 1.
</OSP/S_TRIP_EXPENSE_DETAIL>-EMP_COMPANY_CODE = 1.
</OSP/S_TRIP_EXPENSE_DETAIL>-EMP_BUSINESS_AREA = 1.

ENDLOOP.

LOOP AT IT_/OSP/S_TRIP_EXPENSE_DETAIL INTO WA_/OSP/S_TRIP_EXPENSE_DETAIL.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/OSP/S_TRIP_EXPENSE_DETAIL-EMP_COST_CENTRE, sy-vline,
  WA_/OSP/S_TRIP_EXPENSE_DETAIL-TRIP_START_DATE, sy-vline,
  WA_/OSP/S_TRIP_EXPENSE_DETAIL-TRIP_START_TIME, sy-vline,
  WA_/OSP/S_TRIP_EXPENSE_DETAIL-TRIP_END_DATE, sy-vline,
  WA_/OSP/S_TRIP_EXPENSE_DETAIL-TRIP_END_TIME, sy-vline,
  WA_/OSP/S_TRIP_EXPENSE_DETAIL-TRIP_DEST_LOCATION, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/OSP/S_TRIP_EXPENSE_DETAIL 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_/OSP/S_TRIP_EXPENSE_DETAIL 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_/OSP/S_TRIP_EXPENSE_DETAIL INTO WA_/OSP/S_TRIP_EXPENSE_DETAIL.


*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 ALPHA, internal->external for field EMP_COST_CENTRE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/OSP/S_TRIP_EXPENSE_DETAIL-EMP_COST_CENTRE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/OSP/S_TRIP_EXPENSE_DETAIL-EMP_COST_CENTRE.
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_/OSP/S_TRIP_EXPENSE_DETAIL_STR, 
EMPLOYEE_NAME TYPE STRING,
EMPLOYEE_ID TYPE STRING,
EMPLOYEE_R3NAME TYPE STRING,
EMP_COMPANY_CODE TYPE STRING,
EMP_BUSINESS_AREA TYPE STRING,
EMP_COST_CENTRE TYPE STRING,
TRIP_START_DATE TYPE STRING,
TRIP_START_TIME TYPE STRING,
TRIP_END_DATE TYPE STRING,
TRIP_END_TIME TYPE STRING,
TRIP_DEST_LOCATION TYPE STRING,
TRIP_DEST_COUNTRY TYPE STRING,
TRIP_DEST_REGION TYPE STRING,
TRIP_REASON TYPE STRING,
TRIP_REIMBURSEMENT_AMT TYPE STRING,
TRIP_AMT_PAIDBY_COMPANY TYPE STRING,
TRIP_TOTAL_AMOUNT TYPE STRING,
TRIP_AMOUNT_CURRENCY_KEY TYPE STRING,
TRIP_ITEMIZATION TYPE STRING,
TRIP_COST_ASSIGNMENT TYPE STRING,
TRIP_STATUS_INFO TYPE STRING,
APPROVAL_STATUS TYPE STRING,
SETTLEMENT_STATUS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/OSP/S_TRIP_EXPENSE_DETAIL_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_/OSP/S_TRIP_EXPENSE_DETAIL_STR-EMPLOYEE_NAME sy-vline 
WA_/OSP/S_TRIP_EXPENSE_DETAIL_STR-EMPLOYEE_ID sy-vline 
WA_/OSP/S_TRIP_EXPENSE_DETAIL_STR-EMPLOYEE_R3NAME sy-vline 
WA_/OSP/S_TRIP_EXPENSE_DETAIL_STR-EMP_COMPANY_CODE sy-vline 
WA_/OSP/S_TRIP_EXPENSE_DETAIL_STR-EMP_BUSINESS_AREA sy-vline 
WA_/OSP/S_TRIP_EXPENSE_DETAIL_STR-EMP_COST_CENTRE sy-vline 
WA_/OSP/S_TRIP_EXPENSE_DETAIL_STR-TRIP_START_DATE sy-vline 
WA_/OSP/S_TRIP_EXPENSE_DETAIL_STR-TRIP_START_TIME sy-vline 
WA_/OSP/S_TRIP_EXPENSE_DETAIL_STR-TRIP_END_DATE sy-vline 
WA_/OSP/S_TRIP_EXPENSE_DETAIL_STR-TRIP_END_TIME sy-vline 
WA_/OSP/S_TRIP_EXPENSE_DETAIL_STR-TRIP_DEST_LOCATION sy-vline 
WA_/OSP/S_TRIP_EXPENSE_DETAIL_STR-TRIP_DEST_COUNTRY sy-vline 
WA_/OSP/S_TRIP_EXPENSE_DETAIL_STR-TRIP_DEST_REGION sy-vline 
WA_/OSP/S_TRIP_EXPENSE_DETAIL_STR-TRIP_REASON sy-vline 
WA_/OSP/S_TRIP_EXPENSE_DETAIL_STR-TRIP_REIMBURSEMENT_AMT sy-vline 
WA_/OSP/S_TRIP_EXPENSE_DETAIL_STR-TRIP_AMT_PAIDBY_COMPANY sy-vline 
WA_/OSP/S_TRIP_EXPENSE_DETAIL_STR-TRIP_TOTAL_AMOUNT sy-vline 
WA_/OSP/S_TRIP_EXPENSE_DETAIL_STR-TRIP_AMOUNT_CURRENCY_KEY sy-vline 
WA_/OSP/S_TRIP_EXPENSE_DETAIL_STR-TRIP_ITEMIZATION sy-vline 
WA_/OSP/S_TRIP_EXPENSE_DETAIL_STR-TRIP_COST_ASSIGNMENT sy-vline 
WA_/OSP/S_TRIP_EXPENSE_DETAIL_STR-TRIP_STATUS_INFO sy-vline 
WA_/OSP/S_TRIP_EXPENSE_DETAIL_STR-APPROVAL_STATUS sy-vline 
WA_/OSP/S_TRIP_EXPENSE_DETAIL_STR-SETTLEMENT_STATUS sy-vline      INTO ld_text SEPARATED BY SPACE.

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