ABAP Select data from SAP table SPAOC_TRV_MILEAGE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SPAOC_TRV_MILEAGE
*  INTO TABLE @DATA(IT_SPAOC_TRV_MILEAGE2).
*--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_SPAOC_TRV_MILEAGE INDEX 1 INTO DATA(WA_SPAOC_TRV_MILEAGE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SPAOC_TRV_MILEAGE>-TRAVELANDEXPENSEHEADERID = 1.
<SPAOC_TRV_MILEAGE>-MILEAGEID = 1.
<SPAOC_TRV_MILEAGE>-ISROUNDTRIP = 1.
<SPAOC_TRV_MILEAGE>-MILEAGEDATE = 1.
<SPAOC_TRV_MILEAGE>-TOTALDISTANCE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SPAOC_TRV_MILEAGE-VALUE, sy-vline,
  WA_SPAOC_TRV_MILEAGE-UNIT, sy-vline,
  WA_SPAOC_TRV_MILEAGE-ADDITIONALINFO, sy-vline,
  WA_SPAOC_TRV_MILEAGE-ADDITIONALFLATRATE, sy-vline,
  WA_SPAOC_TRV_MILEAGE-CALCULATEDAMOUNT, sy-vline,
  WA_SPAOC_TRV_MILEAGE-VALUE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SPAOC_TRV_MILEAGE 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_SPAOC_TRV_MILEAGE 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_SPAOC_TRV_MILEAGE INTO WA_SPAOC_TRV_MILEAGE.


*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 CUNIT, internal->external for field UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_SPAOC_TRV_MILEAGE-UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SPAOC_TRV_MILEAGE-UNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_SPAOC_TRV_MILEAGE-UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SPAOC_TRV_MILEAGE-UNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_SPAOC_TRV_MILEAGE-UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SPAOC_TRV_MILEAGE-UNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_SPAOC_TRV_MILEAGE-UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SPAOC_TRV_MILEAGE-UNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CITYCODE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_SPAOC_TRV_MILEAGE-CITYCODE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SPAOC_TRV_MILEAGE-CITYCODE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CITYCODE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_SPAOC_TRV_MILEAGE-CITYCODE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SPAOC_TRV_MILEAGE-CITYCODE.
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_SPAOC_TRV_MILEAGE_STR, 
TRAVELANDEXPENSEHEADERID TYPE STRING,
MILEAGEID TYPE STRING,
ISROUNDTRIP TYPE STRING,
MILEAGEDATE TYPE STRING,
TOTALDISTANCE TYPE STRING,
VALUE TYPE STRING,
UNIT TYPE STRING,
ADDITIONALINFO TYPE STRING,
ADDITIONALFLATRATE TYPE STRING,
CALCULATEDAMOUNT TYPE STRING,
VALUE TYPE STRING,
CURRENCYCODE TYPE STRING,
DECIMALS TYPE STRING,
CALCULATEDDISTANCE TYPE STRING,
VALUE TYPE STRING,
UNIT TYPE STRING,
DOMESTICDISTANCE TYPE STRING,
VALUE TYPE STRING,
UNIT TYPE STRING,
CARMODEL TYPE STRING,
LICENSEPLATE TYPE STRING,
ENTERPRISETYPEDESCRIPTION TYPE STRING,
ENTERPRISETYPE TYPE STRING,
MEMO TYPE STRING,
VEHICLETYPEID TYPE STRING,
VEHICLECLASSID TYPE STRING,
VEHICLECLASSDESCRIPTION TYPE STRING,
VEHICLETYPEDESCRIPTION TYPE STRING,
PASSENGERS TYPE STRING,
WEIGHT TYPE STRING,
VALUE TYPE STRING,
UNIT TYPE STRING,
FROMADDRESS TYPE STRING,
FULLNAME TYPE STRING,
CITY TYPE STRING,
DISTRICT TYPE STRING,
POSTALCODE TYPE STRING,
CITYCODE TYPE STRING,
STREETNAME TYPE STRING,
STREETNUMBER TYPE STRING,
COUNTRY TYPE STRING,
REGION TYPE STRING,
LOCATION TYPE STRING,
COUNTRYDESCRIPTION TYPE STRING,
REGIONDESCRIPTION TYPE STRING,
FULLNAME_FC TYPE STRING,
CITY_FC TYPE STRING,
DISTRICT_FC TYPE STRING,
POSTALCODE_FC TYPE STRING,
CITYCODE_FC TYPE STRING,
STREETNAME_FC TYPE STRING,
STREETNUMBER_FC TYPE STRING,
COUNTRY_FC TYPE STRING,
REGION_FC TYPE STRING,
LOCATION_FC TYPE STRING,
FROMPERDIEMREGION TYPE STRING,
FROMPERDIEMREGIONDESCRIPTION TYPE STRING,
TOADDRESS TYPE STRING,
FULLNAME TYPE STRING,
CITY TYPE STRING,
DISTRICT TYPE STRING,
POSTALCODE TYPE STRING,
CITYCODE TYPE STRING,
STREETNAME TYPE STRING,
STREETNUMBER TYPE STRING,
COUNTRY TYPE STRING,
REGION TYPE STRING,
LOCATION TYPE STRING,
COUNTRYDESCRIPTION TYPE STRING,
REGIONDESCRIPTION TYPE STRING,
FULLNAME_FC TYPE STRING,
CITY_FC TYPE STRING,
DISTRICT_FC TYPE STRING,
POSTALCODE_FC TYPE STRING,
CITYCODE_FC TYPE STRING,
STREETNAME_FC TYPE STRING,
STREETNUMBER_FC TYPE STRING,
COUNTRY_FC TYPE STRING,
REGION_FC TYPE STRING,
LOCATION_FC TYPE STRING,
TOPERDIEMREGION TYPE STRING,
TOPERDIEMREGIONDESCRIPTION TYPE STRING,
MILEAGENUMBER TYPE STRING,
ENTERPRISETYPE_FC TYPE STRING,
ISROUNDTRIP_FC TYPE STRING,
PASSENGERS_FC TYPE STRING,
TOTALDISTANCE_FC TYPE STRING,
VEHICLECLASS_FC TYPE STRING,
VEHICLETYPE_FC TYPE STRING,
LICENSEPLATE_FC TYPE STRING,
DOMESTICDISTANCE_FC TYPE STRING,
MILEAGEDATE_FC TYPE STRING,
CARMODEL_FC TYPE STRING,
CALCULATEDDISTANCE_FC TYPE STRING,
ADDITIONALINFO_FC TYPE STRING,
ADDITIONALFLATRATE_FC TYPE STRING,
WEIGHT_FC TYPE STRING,
MEMO_FC TYPE STRING,
MILEAGENUMBER_FC TYPE STRING,
FROMPERDIEMREGION_FC TYPE STRING,
TOPERDIEMREGION_FC TYPE STRING,
DUMMY_MILEAGE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SPAOC_TRV_MILEAGE_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_SPAOC_TRV_MILEAGE_STR-TRAVELANDEXPENSEHEADERID sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-MILEAGEID sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-ISROUNDTRIP sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-MILEAGEDATE sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-TOTALDISTANCE sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-VALUE sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-UNIT sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-ADDITIONALINFO sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-ADDITIONALFLATRATE sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-CALCULATEDAMOUNT sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-VALUE sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-CURRENCYCODE sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-DECIMALS sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-CALCULATEDDISTANCE sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-VALUE sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-UNIT sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-DOMESTICDISTANCE sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-VALUE sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-UNIT sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-CARMODEL sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-LICENSEPLATE sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-ENTERPRISETYPEDESCRIPTION sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-ENTERPRISETYPE sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-MEMO sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-VEHICLETYPEID sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-VEHICLECLASSID sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-VEHICLECLASSDESCRIPTION sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-VEHICLETYPEDESCRIPTION sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-PASSENGERS sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-WEIGHT sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-VALUE sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-UNIT sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-FROMADDRESS sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-FULLNAME sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-CITY sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-DISTRICT sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-POSTALCODE sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-CITYCODE sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-STREETNAME sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-STREETNUMBER sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-COUNTRY sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-REGION sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-LOCATION sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-COUNTRYDESCRIPTION sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-REGIONDESCRIPTION sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-FULLNAME_FC sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-CITY_FC sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-DISTRICT_FC sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-POSTALCODE_FC sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-CITYCODE_FC sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-STREETNAME_FC sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-STREETNUMBER_FC sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-COUNTRY_FC sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-REGION_FC sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-LOCATION_FC sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-FROMPERDIEMREGION sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-FROMPERDIEMREGIONDESCRIPTION sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-TOADDRESS sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-FULLNAME sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-CITY sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-DISTRICT sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-POSTALCODE sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-CITYCODE sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-STREETNAME sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-STREETNUMBER sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-COUNTRY sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-REGION sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-LOCATION sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-COUNTRYDESCRIPTION sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-REGIONDESCRIPTION sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-FULLNAME_FC sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-CITY_FC sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-DISTRICT_FC sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-POSTALCODE_FC sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-CITYCODE_FC sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-STREETNAME_FC sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-STREETNUMBER_FC sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-COUNTRY_FC sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-REGION_FC sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-LOCATION_FC sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-TOPERDIEMREGION sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-TOPERDIEMREGIONDESCRIPTION sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-MILEAGENUMBER sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-ENTERPRISETYPE_FC sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-ISROUNDTRIP_FC sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-PASSENGERS_FC sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-TOTALDISTANCE_FC sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-VEHICLECLASS_FC sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-VEHICLETYPE_FC sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-LICENSEPLATE_FC sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-DOMESTICDISTANCE_FC sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-MILEAGEDATE_FC sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-CARMODEL_FC sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-CALCULATEDDISTANCE_FC sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-ADDITIONALINFO_FC sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-ADDITIONALFLATRATE_FC sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-WEIGHT_FC sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-MEMO_FC sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-MILEAGENUMBER_FC sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-FROMPERDIEMREGION_FC sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-TOPERDIEMREGION_FC sy-vline 
WA_SPAOC_TRV_MILEAGE_STR-DUMMY_MILEAGE sy-vline      INTO ld_text SEPARATED BY SPACE.

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