The Containment Problem for Real Conjunctive Queries with Inequalities
Summary: Proves undecidability of conjunctive-query containment with inequalities under bag semantics (and bag-set), resolving a long-standing open problem about bag containment. Undecidability holds even with a single binary relation and a fixed bound on inequalities. (summarized by gpt-5-mini on Feb 09 2026)
Incoming Non-self Citations Over Time
Authors
- 1. T.S. Jayram (IBM)
- 2. Phokion G. Kolaitis (IBM; University of California Santa Cruz)
- 3. Erik Vee (IBM)
BibTeX Citation
@inproceedings{jayram_pods06,
address = {New York, NY, USA},
series = {{PODS} '06},
title = {{The Containment Problem for Real Conjunctive Queries with Inequalities}},
url = {https://dl.acm.org/doi/10.1145/1142351.1142363},
doi = {10.1145/1142351.1142363},
booktitle = {Proceedings of the {ACM} {SIGMOD} Symposium on {Principles} of {Database} {Systems}},
publisher = {Association for Computing Machinery},
author = {Jayram, T.S. and Kolaitis, Phokion G. and Vee, Erik},
year = {2006}
}
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Citations counted here include only citations to other VLDB/SIGMOD/CIDR/PODS papers in this database.
| Rank | Cited Paper | Year | Venue | Pagerank |
|---|---|---|---|---|
| 309 | Optimization of Real Conjunctive Queries | 1993 | PODS | 0.00021768596 |
| 869 | Rewriting Aggregate Queries Using Views | 1999 | PODS | 0.00013503594 |
| 2,238 | Deciding Equivalences among Aggregate Queries | 1998 | PODS | 8.8882317e-05 |
| 3,801 | On the Complexity of the Containment Problem for Conjunctive Queries with Built-in Predicates | 1998 | PODS | 7.1130194e-05 |
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