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Scheufele et al., 1998 - Google Patents

Efficient dynamic programming algorithms for ordering expensive joins and selections

Scheufele et al., 1998

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Document ID
18296745709034982907
Author
Scheufele W
Moerkotte G
Publication year
Publication venue
International Conference on Extending Database Technology

External Links

Snippet

The generally accepted optimization heuristics of pushing selections down does not yield optimal plans in the presence of expensive predicates. Therefore, several researchers have proposed algorithms to compute optimal processing trees for queries with expensive …
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Classifications

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    • G06F17/30286Information retrieval; Database structures therefor; File system structures therefor in structured data stores
    • G06F17/30386Retrieval requests
    • G06F17/30424Query processing
    • G06F17/30442Query optimisation
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    • G06F17/30463Plan optimisation
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    • G06F17/30451Query rewriting and transformation of sub-queries or views
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