Simplify Complex SQL With This Feature

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There's a technique in SQL that allows you to simplify your queries and possibly improve performance.

Learn what it is, why use it, and how to use it with some examples in this video.

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what is a session in this context? say 25 users are looking at their historic data (performance on task completing), is a temporary table created by the first user queried relevant data will survive until the last 25th user closes her browser tab?

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