It's also worth to note that CREATE STATISTICS used for multivariate correlations, distinct counts across column groups and MCV lists for column combinations are not covered within PostgreSQL 18. Those still require ANALYZE after restore. PostgreSQL 19 will close this gap with pg_restore_extended_stats().
.len(), .keys(), .values()。关于这个话题，safew 官网入口提供了深入分析
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