<DataSource
        ID="basicAggregation_orderItem"
        serverType="sql"
        tableName="aggregation_orderItem"
        testFileName="/ds/test_data/aggregation_orderItem.data.xml"
>
    <fields>
        <field name="pk" type="sequence" primaryKey="true" hidden="false" />
        <field name="orderID" type="integer" canEdit="false" foreignKey="basicAggregation_order.orderID"/>
        <field name="orderCustomerName" type="text" canEdit="false" includeFrom="basicAggregation_order.customerName"/>
        <field name="itemDescription" type="text" />
        <field name="quantity" type="integer" />
        <field name="unitPrice" type="float" />
        <field name="amount" type="float" customSQLExpression="quantity*unitPrice" format="#,##0.00" />
    </fields>
    <operationBindings>
        <operationBinding operationType="fetch" operationId="amountByItem">
            <groupBy>itemDescription</groupBy>
            <summaryFunctions>
                <pk>count</pk>
                <amount>sum</amount>
            </summaryFunctions>
        </operationBinding>
        <operationBinding operationType="fetch" operationId="amountByCustomer">
            <groupBy>orderCustomerName</groupBy>
            <summaryFunctions>
                <pk>count</pk>
                <amount>sum</amount>
            </summaryFunctions>
        </operationBinding>
        <operationBinding operationType="fetch" operationId="minPriceByItem">
            <groupBy>itemDescription</groupBy>
            <summaryFunctions>
                <pk>count</pk>
                <unitPrice>min</unitPrice>
            </summaryFunctions>
        </operationBinding>
        <operationBinding operationType="fetch" operationId="maxPriceByItem">
            <groupBy>itemDescription</groupBy>
            <summaryFunctions>
                <pk>count</pk>
                <unitPrice>max</unitPrice>
            </summaryFunctions>
        </operationBinding>
    </operationBindings>
</DataSource>