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    SIGMOD
    2007
    ACM
    219views Database» more  SIGMOD 2007»
    Efficient exploitation of similar subexpressions for query processing
    14 years 4 months ago
    Efficient exploitation of similar subexpressions for query processing
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    Complex queries often contain common or similar subexpressions, either within a single query or among multiple queries submitted as a batch. If so, query execution time can be imp...
    Jingren Zhou, Johann Christoph Freytag, Per-Å...
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    ICDE
    1997
    IEEE
    101views Database» more  ICDE 1997»
    Selectivity Estimation in the Presence of Alphanumeric Correlations
    14 years 5 months ago
    Selectivity Estimation in the Presence of Alphanumeric Correlations
    Download  www.research.ibm.com
    Query optimization is an integral part of relational database management systems. One important task in query optimization is selectivity estimation, that is, given a query P, we ...
    Min Wang, Jeffrey Scott Vitter, Balakrishna R. Iye...
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