An Evaluation of Non-Equijoin Algorithms

Summary: Proposes a partitioned band join for non-equijoins; analyzes it against an optimized sort-merge baseline with analytical models and a WiSS implementation. Partitioned band join outperforms sort-merge unless memory is tight or inputs are equal size; a parallel Gamma DB version demonstrates scalable speedups. (summarized by gpt-5-nano on Feb 09 2026)

Paper ID: hf911a1d5f286804d
Venue: VLDB
Year: 1991
Pagerank: 0.00024344086
Overall Rank: 220 | 98.53%
DOI: -

Incoming Non-self Citations Over Time

Authors

BibTeX Citation

@article{dewitt_vldb91,
        title = {{An Evaluation of Non-Equijoin Algorithms}},
        author = {DeWitt, David J. and Naughton, Jeffrey F. and Schneider, Donovan A.},
        journal = {PVLDB},
        series = {{VLDB} '91},
        pages = {443--452},
        year = {1991}
}

Incoming Citations (Sorted by Pagerank)

Showing 28 of 28 citing papers.

Rank	Citing Paper	Year	Venue	Pagerank
60	The Merge/Purge Problem for Large Databases	1995	SIGMOD	0.000394583
108	Approximate String Joins in a Database (Almost) for Free	2001	VLDB	0.0003305531
112	TelegraphCQ: Continuous Dataflow Processing for an Uncertain World	2003	CIDR	0.00032459277
178	Holistic Twig Joins: Optimal XML Pattern Matching	2002	SIGMOD	0.00026628894
200	Continuously Adaptive Continuous Queries over Streams	2002	SIGMOD	0.000254553
201	Efficient set joins on similarity predicates	2004	SIGMOD	0.00025331535
360	Efficient Parallel Set-Similarity Joins Using MapReduce	2010	SIGMOD	0.00020009936
865	Processing Theta-Joins using MapReduce*	2011	SIGMOD	0.0001338765
1,574	Reducing the Braking Distance of an SQL Query Engine	1998	VLDB	0.00010194928
1,594	Evaluation of Main Memory Join Algorithms for Joins with Subset Join Predicates	1997	VLDB	0.00010133792
1,918	Predictable Performance for Unpredictable Workloads	2009	VLDB	9.3789552e-05
2,423	BigDansing: A System for Big Data Cleansing	2015	SIGMOD	8.4877894e-05
2,696	Executing Stream Joins on the Cell Processor	2007	VLDB	8.1205649e-05
3,295	Lightning Fast and Space Efficient Inequality Joins	2015	VLDB	7.448168e-05
3,724	Coalescing in Temporal Databases	1996	VLDB	7.0702677e-05
4,209	Accelerating Queries with Group-By and Join by Groupjoin	2011	VLDB	6.7339503e-05
5,145	Conjunctive Queries with Inequalities Under Updates	2018	VLDB	6.2566119e-05
5,449	High-Performance Row Pattern Recognition Using Joins	2023	VLDB	6.1254016e-05
5,482	Beyond Equi-joins: Ranking, Enumeration and Factorization	2021	VLDB	6.111411e-05
5,538	Temporal Query Processing and Optimization in Multiprocessor Database Machines	1992	VLDB	6.0918672e-05
6,023	Skew Handling Techniques in Sort-Merge Join	2002	SIGMOD	5.9126153e-05
6,052	Spatial Join Selectivity Using Power Laws	2000	SIGMOD	5.9028248e-05
6,287	On Spatially Partitioned Temporal Join	1994	VLDB	5.8228056e-05
6,721	Near-Optimal Distributed Band-Joins through Recursive Partitioning	2020	SIGMOD	5.6981399e-05
7,348	A Scalable and Generic Approach to Range Joins	2022	VLDB	5.5454832e-05
7,527	Algebraic Optimization of Computations over Scientific Databases	1993	VLDB	5.5016558e-05
12,516	D-Hive: Data Bees Pollinating RDF, Text, and Time	2013	CIDR	4.9793485e-05
13,002	Scalable Continuous Query Processing by Tracking Hotspots	2006	VLDB	4.9793485e-05

Outgoing Citations (Sorted by Pagerank)

Showing 7 of 7 cited papers.

Citations counted here include only citations to other VLDB/SIGMOD/CIDR/PODS papers in this database.

Rank	Cited Paper	Year	Venue	Pagerank
7	Implementation Techniques For Main Memory Database Systems	1984	SIGMOD	0.00081992507
46	Benchmarking Database Systems: A Systematic Approach	1983	VLDB	0.00044784799
58	Statistical Estimators for Relational Algebra Expressions	1988	PODS	0.00040035279
156	Multiprocessor Hash-Based Join Algorithms	1985	VLDB	0.00028522117
249	A Performance Evaluation of Four Parallel Join Algorithms in a Shared-Nothing Multiprocessor Environment	1989	SIGMOD	0.00023175253
477	Random Sampling from B+ trees	1989	VLDB	0.00017632787
1,229	Random Sampling from Hash Files	1990	SIGMOD	0.00011420642

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