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    SIGMOD
    1996
    ACM
    132views Database» more  SIGMOD 1996»
    Cost-Based Optimization for Magic: Algebra and Implementation
    13 years 11 months ago
    Cost-Based Optimization for Magic: Algebra and Implementation
    Download  db.cs.berkeley.edu
    Magic sets rewriting is a well-known optimization heuristic for complex decision-support queries. There can be many variants of this rewriting even for a single query, which diffe...
    Praveen Seshadri, Joseph M. Hellerstein, Hamid Pir...
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    VLDB
    1998
    ACM
    82views Database» more  VLDB 1998»
    Reducing the Braking Distance of an SQL Query Engine
    13 years 11 months ago
    Reducing the Braking Distance of an SQL Query Engine
    Download  www-db.in.tum.de
    In a recent paper, we proposed adding a STOP AFTER clause to SQL to permit the cardinality of a query result to be explicitly limited by query writers and query tools. We demonstr...
    Michael J. Carey, Donald Kossmann
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