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SIGMOD
1993
ACM
150views Database» more  SIGMOD 1993»
Predicate Migration: Optimizing Queries with Expensive Predicates
12 years 10 months ago
Predicate Migration: Optimizing Queries with Expensive Predicates
Download  db.cs.berkeley.edu
The traditional focus of relational query optimization schemes has been on the choice of join methods and join orders. Restrictions have typically been handled in query optimizers ...
Joseph M. Hellerstein, Michael Stonebraker
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SIGMOD
2002
ACM
112views Database» more  SIGMOD 2002»
Minimal probing: supporting expensive predicates for top-k queries
13 years 6 months ago
Minimal probing: supporting expensive predicates for top-k queries
Download  eagle.cs.uiuc.edu
This paper addresses the problem of evaluating ranked top-? queries with expensive predicates. As major DBMSs now all support expensive user-defined predicates for Boolean queries...
Kevin Chen-Chuan Chang, Seung-won Hwang
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