Under data warehouse environment, the complex query of the mass data are met frequently, including the multi-tables join, gathers the computation and so on.
在数据仓库环境下，经常会碰到涉及大量数据的复杂查询，包括多表连接、聚集计算等。
Under data warehouse environment, the complex query of the mass data are met frequently, including the multi-tables join, gathers the computation and so on.
在数据仓库环境下，经常会碰到涉及大量数据的复杂查询，包括多表连接、聚集计算等。
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