'Hash phase' presentation slideshows

Parallel Query Optimization

Parallel Query Optimization. Memory. One tuple at a time. Bucket B. Bucket A. Bucket Sizes and I/O Costs. Bucket B does not fit in the memory in its entirety, It must be loaded several times. Memory. One tuple at a time. Bucket B(1). Bucket A(1). Bucket A(2). Bucket B(2). Bucket A(3).

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