PRODUCT JOIN DYNAMIC PARTITION ELIMINATION FOR MULTILEVEL PARTITIONING

摘要

A method of searching a multilevel partitioned database includes receiving a query data from the multilevel partitioned database. At least for one level partitions are dynamically included. For some levels, partitions may also be statically included for execution of the query. The query is the executed over the partitions that are both dynamically and statically included. In one example, the cost of joining two tables in a multilevel partitioned database includes determining level partitions that can be statically included, estimating level partitions that will be dynamically considered for the join, and determining a cost as a function of the estimated statically included level partitions and estimated dynamically included level partitions.