如何在 ubuntu 20.04 上安装 postgreSQL 10.15 版本

Question

我想在我的 Ubuntu 设备上安装 PostgreSQL 10.15 版本，

参考以下链接并尝试安装相同但显示错误： https://www.postgresql.org/download/linux/ubuntu/

Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package postgresql-10.15
E: Couldn't find any package by glob 'postgresql-10.15'
E: Couldn't find any package by regex 'postgresql-10.15'

对于以下命令

sudo apt-get -y install postgresql-10.15

或以下命令

sudo apt-get -y install postgresql=10.15

我收到以下错误

Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Version '10.15' for 'postgresql' was not found

请帮忙，情况紧急，需要安装并调查问题。

先感谢您