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Group-by processing for data containing singleton groups
Group-by processing for data containing singleton groups
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机译:分组处理包含单例组的数据
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摘要
According to one embodiment of the present invention, a system performs a grouping operation for a database query. The system assigns data elements to groups and aggregates information for a group in response to assigning the group two or more data elements. The system passes the aggregated information for a group of two or more data elements for processing in accordance with the query, and passes information for a data element of a single-member group in a received form for processing in accordance with the query. Embodiments of the present invention further include a method and computer program product for grouping data elements in substantially the same manners described above.
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