不具有在 URL 中指定的值的参数将使用在报表设计器中设置的默认值，因此刚才展示的示例销售汇总报表使用的 ReportYear 值是 2003。

Parameters that don't have a value specified in the URL will use the default value that is set in the report designer, so the sample sales summary report just shown uses a ReportYear value of 2003.

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本系统可以记录汽车零部件的进货入库和销售出库，可以对库存情况进行简单查询、汇总操作。

The system can record the purchase of auto parts warehousing and sales, and you can check the information of the auto parts easily, and make the summary of operation.

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例如，可以明显地对销售量进行汇总，但单位价格应当是平均值。

For example sales amount can sensibly be summed but unit price should be averaged.

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