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I think it used to be that one needs to write dedicated programs to go through large amount of data --- you need to know a programming language, all its toolchains, and the all the proper algorithms for doing the query __out-of-memory__ --- certainly above your ordinary analysts' paygrade.

With SQL you need none of those.



This. And if you look at the level of algorithms knowledge needed today to read the least amount of data from a set, it succeeded.




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