"PostgreSQL is great at a lot of things, but if you try to use it for analytics, you hit a wall pretty quickly. That is, it is great at creating, finding and locating individual rows, but if you want to understand what is going on in a data set, it can be painfully slow."
"People have tried to add Band-Aids to improve PostgreSQL analytical performance but they haven't been particularly successful, because being good at analytics requires different techniques for running your queries... typically, that takes a purpose-built analytical engine, which takes a ton of effort."
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