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pro vyhledávání: '"Grigorev, Valentin"'
A window function is a generalization of the aggregation operation. Unlike aggregation, the cardinality of its output is always the same as the cardinality of input. That is, the semantics of this operator imply computing values for extra attributes
Externí odkaz:
http://arxiv.org/abs/2208.03586
In the age of big data, sorting is an indispensable operation for DBMSes and similar systems. Having data sorted can help produce query plans with significantly lower run times. It also can provide other benefits like having non-blocking operators wh
Externí odkaz:
http://arxiv.org/abs/2207.12713