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A Deep Dive into German Strings

Our last post on our "German Strings" has received tremendous attention. We want to follow up on some of your comments and dive deeper into the reasons behind some of our string optimizations.

This high prevalence undoubtedly applies to many other companies as well, as the paper’s dataset consists of data analyzed by Tableau’s users. Our string format, simulated here with a small struct, is passed directly via CPU registers, resulting in only 4 instructions to execute. And with the amount of data that a database system processes on a daily basis, such small differences add up quickly!

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