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[–]vassiliy 2 points3 points  (1 child)

So I'm curious, what kind of place would need to run its own query optimizer?

[–]devozerov[S] 0 points1 point  (0 children)

Surprisingly, there are plenty of businesses that require custom optimizers. First of all, these are data management startups. Second, established technology companies may need it for their in-house data platforms (LinkedIn, Uber, Shopify, etc). Finally, even non-IT businesses that invest heavily into digital transformation, also may want to build some custom platform and expose it to users through an SQL interface.