关于sap:如何使用-SAP-CDS-view-中的-currency-conversion-功能

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例如，我开发了一个 CDS view，并主动生成了一个 Fiori Elements 利用，外面显示的金额单位是欧元：

我冀望利用 CDS view 的货币转换性能，currency conversion，将这些金额的单位转换成美元。

能够应用这个文档里提到的转换函数。

应用如下高亮代码：

@AbapCatalog.sqlViewName: 'ZCTRAVELJERRY'
@AbapCatalog.compiler.compareFilter: true
@AbapCatalog.preserveKey: true
@AccessControl.authorizationCheck: #CHECK
@EndUserText.label: 'Consumption view from /DMO/I_TRAVEL_U'
@Metadata.allowExtensions: true
@Search.searchable: true
define 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.AgencyID
association [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
}

最初的成果：

转换成果如下：蓝色是原始的欧元单位，红色的是通过 currency_conversion 转换之后的新值：

更多 Jerry 的原创文章，尽在：” 汪子熙 ”:

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