Method and device for processing a query in a database management system
First Claim
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1. A method of processing a query in a database management system that generates an access plan to retrieve desired data from computer storage in response to the query, the method comprising:
- deriving an identification from at least a portion of a received query or representation thereof; and
generating the access plan in consideration of a hint associated with said identification, if such a hint is available from a repository of hints.
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Abstract
According to one aspect of the present invention, a method is provided for processing a query in a database management system that generates an access plan to retrieve desired data from computer storage in response to the query. An identification is derived from at least a portion of a received query or representation thereof. The access plan is generated in consideration of a hint associated with the identification, if such a hint is available from a repository of hints.
91 Citations
33 Claims
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1. A method of processing a query in a database management system that generates an access plan to retrieve desired data from computer storage in response to the query, the method comprising:
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deriving an identification from at least a portion of a received query or representation thereof; and
generating the access plan in consideration of a hint associated with said identification, if such a hint is available from a repository of hints. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A device for processing a query in a database management system that generates an access plan to retrieve desired data from computer storage in response to the query, the device comprising:
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a deriving component for deriving an identification from at least a portion of a representation of a received query; and
a generating component for generating the access plan in consideration of a hint associated with said identification, said hint found in a repository of hints. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A computer readable medium including program instructions for causing a computer to perform a method comprising:
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deriving an identification from at least a portion of a received predetermined representation of a query;
accessing a repository of user-specified hints in order to find a hint associated with said identification; and
generating the access plan in consideration of the user-specified hint, if a user-specified hint could be retrieved from said repository. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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Specification