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[ACM Press the 35th SIGMOD international conference - Providence, Rhode Island, USA (2009.06.29-2009.07.02)] Proceedings of the 35th SIGMOD international conference on Management of data - SIGMOD '09 - DDE

โœ Scribed by Xu, Liang; Ling, Tok Wang; Wu, Huayu; Bao, Zhifeng

Book ID
125499026
Publisher
ACM Press
Year
2009
Weight
769 KB
Category
Article
ISBN
1605585513

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[ACM Press the 35th SIGMOD international
[ACM Press the 35th SIGMOD international conference - Providence, Rhode Island, USA (2009.06.29-2009.07.02)] Proceedings of the 35th SIGMOD international conference on Management of data - SIGMOD '09 - Query simplification
โœ Neumann, Thomas ๐Ÿ“‚ Article ๐Ÿ“… 2009 ๐Ÿ› ACM Press โš– 492 KB

Join ordering is one of the most important, but also most challenging problems of query optimization. In general finding the optimal join order is NP-hard. Existing dynamic programming algorithms exhibit exponential runtime even for the restricted, but highly relevant class of star joins. Therefore,