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» Fuzzy queries and relational databases
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87
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SIGMOD
2010
ACM
187views Database» more  SIGMOD 2010»
15 years 5 months ago
PIQL: a performance insightful query language
Large-scale websites are increasingly moving from relational databases to distributed key-value stores for high request rate, low latency workloads. Often this move is motivated n...
Michael Armbrust, Stephen Tu, Armando Fox, Michael...
100
Voted
GIS
2008
ACM
15 years 1 months ago
Snapshot location-based query processing on moving objects in road networks
Location-based services are increasingly popular and it is a key challenge to efficiently support query processing. We present a novel design to process large numbers of location...
Haojun Wang, Roger Zimmermann
SIGMOD
1996
ACM
120views Database» more  SIGMOD 1996»
15 years 4 months ago
Query Execution Techniques for Caching Expensive Methods
Object-Relational and Object-Oriented DBMSs allow users to invoke time-consuming ("expensive") methods in their queries. When queries containing these expensive methods a...
Joseph M. Hellerstein, Jeffrey F. Naughton
ICDE
2007
IEEE
113views Database» more  ICDE 2007»
16 years 2 months ago
Reducing Order Enforcement Cost in Complex Query Plans
Algorithms that exploit sort orders are widely used to implement joins, grouping, duplicate elimination and other set operations. Query optimizers traditionally deal with sort ord...
Ravindra Guravannavar, S. Sudarshan
102
Voted
PODS
2001
ACM
143views Database» more  PODS 2001»
16 years 23 days ago
Pipelining in Multi-Query Optimization
Database systems frequently have to execute a set of related queries, which share several common subexpressions. Multi-query optimization exploits this, by finding evaluation plan...
Nilesh N. Dalvi, Sumit K. Sanghai, Prasan Roy, S. ...