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

How to Install PostgreSQL 13 on Debian Gnu/Linux Distro

GNU/Linux Debian Installing PostgreSQL 13 Guide

Hi! The Tutorial shows you How to Install PostgreSQL 13 Database Server in Debian GNU/Linux Distribution.

And PostgreSQL 13 for Debian is a Powerful, Open Source Object-Relational Database System with a proven Architecture knows for its strong Reliability, Data Integrity, and Correctness.

Install PostgreSQL 13 on Debian - Featured

GNU/Linux Debian PostgreSQL 13 Database Installation Guide