According to the processing procedure of query pre-compiler, this paper givens the general design and implementation of syntax analysis, semantics analysis in MDBI query pre-compiler.

按照查询预处理的处理过程，分别描述了MDBI查询预处理器中词法分析、语法分析、语义分析的设计和实现。

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Another side effect to this scenario is that any form of materialization (pre-calculated aggregates) in the database may be ignored since no fact is included in the query.

此场景的另一个副作用是数据库中的任何形式的实体化(预计算聚合)可能会被忽略，因为查询中不包含任何事实。

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Because query results from the [HistoricSales] cube are pre-cached, the performance for queries that are run against the sales data of the entire time period is improved.

因为预先缓存了来自[HistoricSales]数据集的查询结果，所以整个时间段的销售数据执行的查询性能得到了改善。

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