QUERY SUMMARY GENERATION USING ROW-COLUMN DATA STORAGE

摘要

A data storage system includes a column store and a row store. The data storage system may generate a query summary. The data storage system determines query summary fields comprised of a subset of fields from a schema used to store data in the row store. The data storage system searches the column store or the row store for query results in the query summary fields. A query summary field is generated from the query results in the query summary fields.

主权项

1. A method comprising:
receiving a query at a data storage system comprising a query engine, a column store, and a row store; in response to receiving the query, the query engine generating query results and a query summary, wherein generating the query summary comprises:
determining query summary fields comprised of a subset of fields from a schema used to store data in the row store;determining whether all of the query summary fields are stored in the column store;in response to a determination that all of the query summary fields are not stored in the column store, searching only the row store instead of the column store for a portion of the query results in the query summary fields; andgenerating the query summary from the portion of the query results in the query summary fields.