疼死我了
发表于 2025-4-1 02:25:14
Yun Liu,Li Zhang,Stephen DesiderioThe problem of rewriting queries using views is closely related to the problem of checking for query containment or equivalence. For most classes of problems, containment tests enable simple algorithms to rewrite queries using views. Rewriting queries is one of the techniques that is most often used to answer queries using views.
Explosive
发表于 2025-4-1 06:17:25
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