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    ICDE
    2005
    IEEE
    113views Database» more  ICDE 2005»
    On the Optimal Ordering of Maps and Selections under Factorization
    15 years 5 months ago
    On the Optimal Ordering of Maps and Selections under Factorization
    Download  pi3.informatik.uni-mannheim.de
    The query optimizer of a database system is confronted with two aspects when handling user-defined functions (UDFs) in query predicates: the vast differences in evaluation costs b...
    Thomas Neumann, Sven Helmer, Guido Moerkotte
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