Slow materialization sort of partially ordered inputs in a...

Details Slow materialization sort of partially ordered inputs in a... Slow materialization sort of partially ordered inputs in a...

G - Physics

06

F

G06F 17/30 (2006.01) G06F 7/24 (2006.01) G06F 9/44 (2006.01)

Patent

CA 2427216

The invention improves performance of a query in a database system when a plan for the query includes sorting an input that is at least partially sorted such that a slow materialization sort can be applied. The invention applies the slow materialization sort by determining a sequence of subsets in accordance with the partially sorted input. As each of the subsets is determined, the subset is output for further processing. Advantageously, the invention reduces the waiting period for obtaining results from a sorting operation under certain circumstances.

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