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Statistics defined by the CREATE STATISTICS command are only used to assist with the selectivity estimations of base relations, never for joins. Here we mention this fact in the notes section of the CREATE STATISTICS command. Discussion: https://postgr.es/m/CAApHDvrMuVgDOrmg_EtFDZ=AOovq6EsJNnHH1ddyZ8EqL4yzMw@mail.gmail.com Backpatch-through: 11