Searching for "Duplicates in SQL." – sorted by Relevance.
7 documents found, showing 1 through 7.
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Managing Temporal Data - A Five-Part Series
- … of preventing duplicate rows, via a constraint in a table definition. Preventing duplicates using SQL is thought…
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Parallel database systems: the future of high performance database systems
- … duplicates. SQL defines several aggregate operators to summarize attributes into a single value, for example…
- Cited by 387 (7 self) – Add To MetaCart
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Parallel Database Systems: The Future of Database Processing or a Passing Fad?
- … criteria, optionally eliminating duplicates. SQL defines several aggregate operators to summarize…
- Cited by 41 (5 self) – Add To MetaCart
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Processing Queries Over Generalization Hierarchies in a Multidatabase System
- … true, since DAPLEX queries do not usually remove duplicates. (SQL [CAEG76] has similar semantics…
- Cited by 30 (0 self) – Add To MetaCart
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Optimizing Relational Queries by Materializing Natural Joins
- … duplicates in SQL, the removal process is expensive when the results are very large. We developed a technique…
- Cited by 1 (1 self) – Add To MetaCart
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Mapping Methods and Query for Aggregation and Association in ObjectRelational
- … collection that allows duplicates. A multiset is an unordered collection that allows duplicates. SQL…
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Dataflow Parallel Database Systems
- … on an attribute sort criteria, optionally eliminating duplicates. SQL defines several aggregate operators…
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Showing 1 through 7.
