How to use the current conversion function in SAP CDs view

function CURRENCY_CONVERSION To pass to the formal parameter amount To perform currency conversion . The data type of the result CURR Have and pass to amount The actual parameters of the same technical properties .

Currency conversion is based on database tables TCUR System specific logins saved in client Rules are enforced , This database table is stored in SFIB Development kit . These rules can use transaction codes OB08 Editing .

The transformation is performed on the database , This means that part of the calculation is done using the ABAP Different rounding rules . No matter what conversion , Can not expect to get and use the standard Function Module The same result for currency conversion , Because these latter are usually less accurate , And rounding the intermediate result accordingly .

Here is a concrete example .

for example , I developed a CDS view, And automatically generates a Fiori Elements application , The monetary unit shown in it is Euro ：

I expect to use CDS view Currency conversion function ,currency conversion, Convert the units of these amounts into US dollars .

You can use this file The conversion function mentioned in .

Use the following highlighted code ：

@AbapCatalog.sqlViewName: 'ZCTRAVELJERRY'@AbapCatalog.compiler.compareFilter: [e-mail]: [e-mail]: #[e-mail]: 'Consumption view from /DMO/I_TRAVEL_U'@Metadata.allowExtensions: [e-mail]: truedefine view Z_C_TRAVEL_DATA_JERRY as select from /DMO/I_Travel_U association [1..1] to /DMO/I_Agency as _Agency on $projection.AgencyID = _Agency.AgencyIDassociation [1..1] to /DMO/I_Customer as _Customer on $projection.CustomerID = _Customer.CustomerID{           key TravelID,    @ObjectModel.text.association: '_Agency'    AgencyID,    CustomerID,    concat_with_space(_Customer.Title, _Customer.LastName, 1) as Addressee,    BeginDate,    EndDate,    BookingFee,    TotalPrice,    CurrencyCode,    currency_conversion(        amount => TotalPrice,        source_currency => CurrencyCode,        round => 'X',        target_currency => cast('USD' as abap.cuky( 5 )),        exchange_rate_date => cast('20200429' as abap.dats),        error_handling => 'SET_TO_NULL' )    as PriceInUSD,      @Search.defaultSearchElement: true    @Search.fuzzinessThreshold: 0.90    Memo,    Status,    LastChangedAt,    /* Associations */    _Agency,    _Booking,    _Currency,    _Customer}

The final effect ：

The conversion effect is as follows ： Blue is the original Euro unit , The red one is through currency_conversion New value after conversion ：