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Cost based transformations

Two candidates for the best logical query plan. Initial logical query plan. Cost based transformations. Cost based transformations. The (estimated) size of  a =10 ( R ) is 5000/50 = 100 The (estimated) size of ( a =10 ( R )) is min{1*100, 100/2} = 50

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298 views • 16 slides

Cost based transformations

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182 views • 16 slides

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