ABAP Select data from SAP table MTE_S_TRAVEL_EXPENSE_FC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MTE_S_TRAVEL_EXPENSE_FC
*  INTO TABLE @DATA(IT_MTE_S_TRAVEL_EXPENSE_FC2).
*--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_MTE_S_TRAVEL_EXPENSE_FC INDEX 1 INTO DATA(WA_MTE_S_TRAVEL_EXPENSE_FC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MTE_S_TRAVEL_EXPENSE_FC>-DATEDEP_FC = 1.
<MTE_S_TRAVEL_EXPENSE_FC>-TIMEDEP_FC = 1.
<MTE_S_TRAVEL_EXPENSE_FC>-DATEARR_FC = 1.
<MTE_S_TRAVEL_EXPENSE_FC>-TIMEARR_FC = 1.
<MTE_S_TRAVEL_EXPENSE_FC>-CUSTOMER_FC = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MTE_S_TRAVEL_EXPENSE_FC-LOCATION_FC, sy-vline,
  WA_MTE_S_TRAVEL_EXPENSE_FC-COUNTRY_FC, sy-vline,
  WA_MTE_S_TRAVEL_EXPENSE_FC-REGION_FC, sy-vline,
  WA_MTE_S_TRAVEL_EXPENSE_FC-TT_COMSP_FC, sy-vline,
  WA_MTE_S_TRAVEL_EXPENSE_FC-TT_STATU_FC, sy-vline,
  WA_MTE_S_TRAVEL_EXPENSE_FC-T_ACTYPE_FC, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MTE_S_TRAVEL_EXPENSE_FC 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_MTE_S_TRAVEL_EXPENSE_FC 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_MTE_S_TRAVEL_EXPENSE_FC INTO WA_MTE_S_TRAVEL_EXPENSE_FC.


*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_MTE_S_TRAVEL_EXPENSE_FC_STR, 
DATEDEP_FC TYPE STRING,
TIMEDEP_FC TYPE STRING,
DATEARR_FC TYPE STRING,
TIMEARR_FC TYPE STRING,
CUSTOMER_FC TYPE STRING,
LOCATION_FC TYPE STRING,
COUNTRY_FC TYPE STRING,
REGION_FC TYPE STRING,
TT_COMSP_FC TYPE STRING,
TT_STATU_FC TYPE STRING,
T_ACTYPE_FC TYPE STRING,
PLAN_ACTIVITY_TYPE_FC TYPE STRING,
ESTIMATED_COST_FC TYPE STRING,
ESTIMATED_COST_CURR_FC TYPE STRING,
FM_POSTING_DATE_FC TYPE STRING,
DEPARTURE_WORK_FC TYPE STRING,
ARRIVAL_WORK_FC TYPE STRING,
DATECOW_FC TYPE STRING,
TIMECOW_FC TYPE STRING,
DATEEOW_FC TYPE STRING,
TIMEEOW_FC TYPE STRING,
CITYADR_FC TYPE STRING,
CITY_DISTRICTADR_FC TYPE STRING,
POST_CODEADR_FC TYPE STRING,
CITY_CODEADR_FC TYPE STRING,
STREETADR_FC TYPE STRING,
HOUSE_NUMADR_FC TYPE STRING,
COUNTRYADR_FC TYPE STRING,
REGIONADR_FC TYPE STRING,
EDITOR_FC TYPE STRING,
CARRY_OTH_FC TYPE STRING,
CARRIED_BY_OTH_FC TYPE STRING,
EXCHANGE_DATE_FC TYPE STRING,
ROUNDING_FC TYPE STRING,
PLAN_ACTIVITY_TYPE_NAME_FC TYPE STRING,
APPROVERNAME_FC TYPE STRING,
TT_COMSP_NAME_FC TYPE STRING,
TT_STATU_NAME_FC TYPE STRING,
T_ACTYPE_NAME_FC TYPE STRING,
DATEOUT_FC TYPE STRING,
TIMEOUT_FC TYPE STRING,
DATEFAR_FC TYPE STRING,
TIMEFAR_FC TYPE STRING,
DATEFDP_FC TYPE STRING,
TIMEFDP_FC TYPE STRING,
DATERET_FC TYPE STRING,
TIMERET_FC TYPE STRING,
RET_COUN_FC TYPE STRING,
RET_RGIO_FC TYPE STRING,
ABROAD_LANDING_FC TYPE STRING,
PD_MEALS_FC TYPE STRING,
PD_ACCOM_FC TYPE STRING,
REASON_FC TYPE STRING,
REASON_LIST_FC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MTE_S_TRAVEL_EXPENSE_FC_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_MTE_S_TRAVEL_EXPENSE_FC_STR-DATEDEP_FC sy-vline 
WA_MTE_S_TRAVEL_EXPENSE_FC_STR-TIMEDEP_FC sy-vline 
WA_MTE_S_TRAVEL_EXPENSE_FC_STR-DATEARR_FC sy-vline 
WA_MTE_S_TRAVEL_EXPENSE_FC_STR-TIMEARR_FC sy-vline 
WA_MTE_S_TRAVEL_EXPENSE_FC_STR-CUSTOMER_FC sy-vline 
WA_MTE_S_TRAVEL_EXPENSE_FC_STR-LOCATION_FC sy-vline 
WA_MTE_S_TRAVEL_EXPENSE_FC_STR-COUNTRY_FC sy-vline 
WA_MTE_S_TRAVEL_EXPENSE_FC_STR-REGION_FC sy-vline 
WA_MTE_S_TRAVEL_EXPENSE_FC_STR-TT_COMSP_FC sy-vline 
WA_MTE_S_TRAVEL_EXPENSE_FC_STR-TT_STATU_FC sy-vline 
WA_MTE_S_TRAVEL_EXPENSE_FC_STR-T_ACTYPE_FC sy-vline 
WA_MTE_S_TRAVEL_EXPENSE_FC_STR-PLAN_ACTIVITY_TYPE_FC sy-vline 
WA_MTE_S_TRAVEL_EXPENSE_FC_STR-ESTIMATED_COST_FC sy-vline 
WA_MTE_S_TRAVEL_EXPENSE_FC_STR-ESTIMATED_COST_CURR_FC sy-vline 
WA_MTE_S_TRAVEL_EXPENSE_FC_STR-FM_POSTING_DATE_FC sy-vline 
WA_MTE_S_TRAVEL_EXPENSE_FC_STR-DEPARTURE_WORK_FC sy-vline 
WA_MTE_S_TRAVEL_EXPENSE_FC_STR-ARRIVAL_WORK_FC sy-vline 
WA_MTE_S_TRAVEL_EXPENSE_FC_STR-DATECOW_FC sy-vline 
WA_MTE_S_TRAVEL_EXPENSE_FC_STR-TIMECOW_FC sy-vline 
WA_MTE_S_TRAVEL_EXPENSE_FC_STR-DATEEOW_FC sy-vline 
WA_MTE_S_TRAVEL_EXPENSE_FC_STR-TIMEEOW_FC sy-vline 
WA_MTE_S_TRAVEL_EXPENSE_FC_STR-CITYADR_FC sy-vline 
WA_MTE_S_TRAVEL_EXPENSE_FC_STR-CITY_DISTRICTADR_FC sy-vline 
WA_MTE_S_TRAVEL_EXPENSE_FC_STR-POST_CODEADR_FC sy-vline 
WA_MTE_S_TRAVEL_EXPENSE_FC_STR-CITY_CODEADR_FC sy-vline 
WA_MTE_S_TRAVEL_EXPENSE_FC_STR-STREETADR_FC sy-vline 
WA_MTE_S_TRAVEL_EXPENSE_FC_STR-HOUSE_NUMADR_FC sy-vline 
WA_MTE_S_TRAVEL_EXPENSE_FC_STR-COUNTRYADR_FC sy-vline 
WA_MTE_S_TRAVEL_EXPENSE_FC_STR-REGIONADR_FC sy-vline 
WA_MTE_S_TRAVEL_EXPENSE_FC_STR-EDITOR_FC sy-vline 
WA_MTE_S_TRAVEL_EXPENSE_FC_STR-CARRY_OTH_FC sy-vline 
WA_MTE_S_TRAVEL_EXPENSE_FC_STR-CARRIED_BY_OTH_FC sy-vline 
WA_MTE_S_TRAVEL_EXPENSE_FC_STR-EXCHANGE_DATE_FC sy-vline 
WA_MTE_S_TRAVEL_EXPENSE_FC_STR-ROUNDING_FC sy-vline 
WA_MTE_S_TRAVEL_EXPENSE_FC_STR-PLAN_ACTIVITY_TYPE_NAME_FC sy-vline 
WA_MTE_S_TRAVEL_EXPENSE_FC_STR-APPROVERNAME_FC sy-vline 
WA_MTE_S_TRAVEL_EXPENSE_FC_STR-TT_COMSP_NAME_FC sy-vline 
WA_MTE_S_TRAVEL_EXPENSE_FC_STR-TT_STATU_NAME_FC sy-vline 
WA_MTE_S_TRAVEL_EXPENSE_FC_STR-T_ACTYPE_NAME_FC sy-vline 
WA_MTE_S_TRAVEL_EXPENSE_FC_STR-DATEOUT_FC sy-vline 
WA_MTE_S_TRAVEL_EXPENSE_FC_STR-TIMEOUT_FC sy-vline 
WA_MTE_S_TRAVEL_EXPENSE_FC_STR-DATEFAR_FC sy-vline 
WA_MTE_S_TRAVEL_EXPENSE_FC_STR-TIMEFAR_FC sy-vline 
WA_MTE_S_TRAVEL_EXPENSE_FC_STR-DATEFDP_FC sy-vline 
WA_MTE_S_TRAVEL_EXPENSE_FC_STR-TIMEFDP_FC sy-vline 
WA_MTE_S_TRAVEL_EXPENSE_FC_STR-DATERET_FC sy-vline 
WA_MTE_S_TRAVEL_EXPENSE_FC_STR-TIMERET_FC sy-vline 
WA_MTE_S_TRAVEL_EXPENSE_FC_STR-RET_COUN_FC sy-vline 
WA_MTE_S_TRAVEL_EXPENSE_FC_STR-RET_RGIO_FC sy-vline 
WA_MTE_S_TRAVEL_EXPENSE_FC_STR-ABROAD_LANDING_FC sy-vline 
WA_MTE_S_TRAVEL_EXPENSE_FC_STR-PD_MEALS_FC sy-vline 
WA_MTE_S_TRAVEL_EXPENSE_FC_STR-PD_ACCOM_FC sy-vline 
WA_MTE_S_TRAVEL_EXPENSE_FC_STR-REASON_FC sy-vline 
WA_MTE_S_TRAVEL_EXPENSE_FC_STR-REASON_LIST_FC sy-vline      INTO ld_text SEPARATED BY SPACE.

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