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by mjibson 2193 days ago
Which version of CockroachDB was that? A few years ago it had a rudimentary heuristic optimizer that made plenty of poor choices. Today it has a quickly improving cost-based optimizer that makes much better choices. Each release now has significant jumps in which kinds of queries it can produce fast plans for.
1 comments

It was indeed a few years ago, maybe end of 2018!