Фото: Majid Asgaripour / Reuters
The feature was driven by the upgrade use case. In the past, major version upgrades used to leave pg_statistic empty, forcing you to run ANALYZE. Which might take hours on large clusters. With PostgreSQL 18 upgrades now transfer statistics automatically. But that's just the beginning. The same logic lets you export statistics from production and inject them anywhere - test database, local debugging, or as part of CI pipelines.
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Winter 2021 was a full lockdown, I assume this reduced the risk of getting sick，详情可参考手游
很难想象的是，今天仍然有2亿以上中国人不会操作复制粘贴，有超过4亿人不会上网发表观点。