Window Aggregation

Window Aggregation is…​FIXME

From Structured Query to Physical Plan

Spark Analyzer uses ExtractWindowExpressions logical resolution rule to replace (extract) WindowExpression expressions with Window logical operators in a logical query plan.

Note
 Window —> (BasicOperators) —> WindowExec —> WindowExec.adoc#doExecute (and windowExecBufferInMemoryThreshold + windowExecBufferSpillThreshold)

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