AQuery: Query Language for Ordered Data, Optimization Techniques, and Experiments

@inproceedings{Lerner2003AQueryQL,
  title={AQuery: Query Language for Ordered Data, Optimization Techniques, and Experiments},
  author={Alberto Lerner and Dennis Shasha},
  booktitle={VLDB},
  year={2003}
}
An order-dependent query is one whose result (interpreted as a multiset) changes if the order of the input records is changed. In a stock-quotes database, for instance, retrieving all quotes concerning a given stock for a given day does not depend on order, because the collection of quotes does not depend on order. By contrast, finding a stock’s fiveprice moving-average in a trades table gives a result that depends on the order of the table. Query languages based on the relational data model… CONTINUE READING
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Querying Ordered Databases with AQuery.

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1 Excerpt

Advanced SQL:1999 – Understanting Object-Relational and Other Advanced Features.

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