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An evaluation of whether a system works well enough to be fit for purpose. Normally performance refers to the speed with which a system completes an operation or set of operations over time.

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I have two tables: table1 with 61 million rows and table2 with 59 millions rows. The columns in both are the same (name and type). Both are imported from backup files. I want to merge these two table …
asked Nov 4 '15 by Ewerton