What is a Physical read?

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1. What is a Physical read?

Physical Reads: Physical read indicates total number of data pages that are read from disk. In case no data in data cache, the physical read will be equal to number of logical read. And usually it happens for first query request. And for subsequent same query request the number will be substantially decreased because the data pages have been in data cache.

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Interview Questions

1. What is a Physical read?

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