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Issue 升级 PostgreSQL 9.1 的一个集群，由于该集群用到了 PostGIS，在升级 PostgreSQL 时也需要升级一下 PostGIS。PostGIS 相关软件安装好后，在 PostgreSQL 11 中创建 postgis extension 时失败，如下： alvindb= 阅读全文
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Background In many cases applications need to get current Unix timestamp (seconds since 1970-01-01 00:00:00 UTC, also called Unix epoch or Unix time o 阅读全文
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Steinar H. Gunderson Leaving MySQL About one month ago, Steinar H. Gunderson wrote a blog rubbishing MySQL and recommending PostgreSQL. Here is the or 阅读全文
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Easy Dump While you are upgrading from PostgreSQL earlier releases like PostgreSQL 9.1 to later releases like PostgreSQL 11, pg_dump and pg_upgrade pr 阅读全文