Efficient partitioned joins in a database with column-major layout
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United States of America Patent
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Jan 23, 2018
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app pub date -
Aug 24, 2012
filing date -
Jun 29, 2012
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Abstract
Embodiments of the present invention provide a database processing system for efficient partitioning of a database table with column-major layout for executing one or more join operations. One embodiment comprises a method for partitioning a database table with column-major layout, partitioning only the join-columns by limiting the partitions by size and number, executing one or more join operations for joining the partitioned columns, and optionally de-partitioning the join result to the original order by sequentially writing and randomly reading table values using P cursors.
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