Method and apparatus for executing a query that specifies a sort

Details Method and apparatus for executing a query that specifies a sort Method and apparatus for executing a query that specifies a sort

1998-08-04

1999-10-26

Black, Thomas G.

Data processing: database and file management or data structures

Database design

Data structure types

707 1, 707 3, 707 4, 707 5, 707200, 707203, 706 45, 395685, 395700, G06F 1730

Patent

active

059744081

ABSTRACT:
Sort plus operations such as "group by" and "distinct" generally require sorting of the retrieved data before performing the sort plus operation. A method and apparatus is disclosed for executing a query specifying a sort plus operation without performing the sorting operation. To perform the sort plus operation, it is determined whether a sorted source exists that can be used to obtain the data specified in the query. If the sorted source does exist, it is then used to perform the sort plus operation.

REFERENCES:
patent: 4558413 (1985-12-01), Schmidt
patent: 5301317 (1994-04-01), Lohman
patent: 5339430 (1994-08-01), Lundin
patent: 5666526 (1997-09-01), Reiter
patent: 5668987 (1997-09-01), Schneider
patent: 5671403 (1997-09-01), Shekita
patent: 5680602 (1997-10-01), Bloem
patent: 5701400 (1997-12-01), Amado
patent: 5734884 (1998-03-01), Eberhard
patent: 5822748 (1998-10-01), Cohen

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