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Discrete and Continuous Data in SQL

Not all data is discrete; some data types represent a continuum. In SQL, we have to approximate them and live with the special problems of handling continuous data. We need to understand the problems associated with continuous data types, when these will happen, and how it affects constraints and the results of queries. Joe Celko explains.

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Distance Metric Algorithms

What are the distance metric algorithms that can be used in VECTOR_DISTANCE()?

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