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: 8224
Venue: VLDB
Year: 1991
Pagerank: 0.00024797689
Overall Rank: 210 | 98.57%
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
58	The Merge/Purge Problem for Large Databases	1995	SIGMOD	0.00040116748
107	Approximate String Joins in a Database (Almost) for Free	2001	VLDB	0.00033511706
111	TelegraphCQ: Continuous Dataflow Processing for an Uncertain World	2003	CIDR	0.00032990214
175	Holistic Twig Joins: Optimal XML Pattern Matching	2002	SIGMOD	0.00027226333
193	Continuously Adaptive Continuous Queries over Streams	2002	SIGMOD	0.00025964286
200	Efficient set joins on similarity predicates	2004	SIGMOD	0.00025597287
356	Efficient Parallel Set-Similarity Joins Using MapReduce	2010	SIGMOD	0.00020303289
843	Processing Theta-Joins using MapReduce*	2011	SIGMOD	0.00013666161
1,544	Reducing the Braking Distance of an SQL Query Engine	1998	VLDB	0.00010410466
1,568	Evaluation of Main Memory Join Algorithms for Joins with Subset Join Predicates	1997	VLDB	0.0001034191
1,879	Predictable Performance for Unpredictable Workloads	2009	VLDB	9.5613416e-05
2,398	BigDansing: A System for Big Data Cleansing	2015	SIGMOD	8.631172e-05
2,655	Executing Stream Joins on the Cell Processor	2007	VLDB	8.2888851e-05
3,295	Lightning Fast and Space Efficient Inequality Joins	2015	VLDB	7.5477715e-05
3,641	Coalescing in Temporal Databases	1996	VLDB	7.2322209e-05
4,223	Accelerating Queries with Group-By and Join by Groupjoin	2011	VLDB	6.8224393e-05
5,066	Conjunctive Queries with Inequalities Under Updates	2018	VLDB	6.3771079e-05
5,321	High-Performance Row Pattern Recognition Using Joins	2023	VLDB	6.2659937e-05
5,402	Temporal Query Processing and Optimization in Multiprocessor Database Machines	1992	VLDB	6.2310833e-05
5,593	Beyond Equi-joins: Ranking, Enumeration and Factorization	2021	VLDB	6.1552328e-05
5,897	Skew Handling Techniques in Sort-Merge Join	2002	SIGMOD	6.0472244e-05
5,932	Spatial Join Selectivity Using Power Laws	2000	SIGMOD	6.0369275e-05
6,172	On Spatially Partitioned Temporal Join	1994	VLDB	5.9512937e-05
6,596	Near-Optimal Distributed Band-Joins through Recursive Partitioning	2020	SIGMOD	5.828647e-05
7,207	A Scalable and Generic Approach to Range Joins	2022	VLDB	5.6727648e-05
7,385	Algebraic Optimization of Computations over Scientific Databases	1993	VLDB	5.6278655e-05
12,225	D-Hive: Data Bees Pollinating RDF, Text, and Time	2013	CIDR	5.093636e-05
12,712	Scalable Continuous Query Processing by Tracking Hotspots	2006	VLDB	5.093636e-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	0.00083340894
45	Benchmarking Database Systems: A Systematic Approach	1983	VLDB	0.00045531113
55	Statistical Estimators for Relational Algebra Expressions	1988	PODS	0.00040746149
152	Multiprocessor Hash-Based Join Algorithms	1985	VLDB	0.00029038365
242	A Performance Evaluation of Four Parallel Join Algorithms in a Shared-Nothing Multiprocessor Environment	1989	SIGMOD	0.00023604323
467	Random Sampling from B+ trees	1989	VLDB	0.00018002218
1,206	Random Sampling from Hash Files	1990	SIGMOD	0.00011663837

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