$schemamarkup = get_post_meta(get_the_ID(), 'schemamarkup', true); if(!empty($schemamarkup)) { echo $schemamarkup; }

Step by step – PostgreSQL 12 Installation on Ubuntu 20.04 Guide

December 11, 2019 | By the+gnu+linux+evangelist.

GNU/Linux Ubuntu 20.04 Install PostgreSQL 12 – Step by step Guide

How to Install PostgreSQL 12 on Ubuntu 20.04 Focal LTS GNU/Linux desktop/server.

And PostgreSQL 12 for Ubuntu 20.04 is a Powerful, Open Source Object-Relational Database System with a proven Architecture knows for its strong Reliability, Data Integrity, and Correctness.

Moreover, PostgreSQL 12 is a Major Release that contains a number of Extensive Changes that May affect Compatibility with Previous Releases.

Especially relevant: A dump/restore using pg_dumpall, or use of pg_upgrade, is Required for those wishing to Migrate Data from any previous release.

Step-by-step PostgreSQL 12 Ubuntu 20.04 Installation Easy Guide
  1. 1. Launching Terminal

    Open a Shell Terminal emulator window
    (Press “Enter” to Execute Commands)

    PostgreSQL 12 Ubuntu 20.04 Install - Open Terminal

    Or Login into Server Shell.