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Add cost estimation of range @> and <@ operators.
The estimates are based on the existing lower bound histogram, and a newhistogram of range lengths.Bump catversion, because the range length histogram now needs to be presentin statistic slot kind 6, or you get an error on @> and <@ queries. (Are-ANALYZE would be enough to fix that, though)Alexander Korotkov, with some refactoring by me.1 parent788bce1 commit59d0bf9
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