#SQL is easy thanks to the SQL Standard:
mariadb> SELECT 'Hello World';
mysql> SELECT 'Hello World';
postgresql> SELECT 'Hello World';
mssql> SELECT 'Hello World';
sqlite> SELECT 'Hello World';
oracle> SELECT 'Hello World' FROM dual;
It's _almost_ universally implemented ...!
https://twitter.com/FakeRyanGosling/status/1126267592803360768 …
Lacking F641, one could use optional feature S091: sql> select * from unnest(array['Hello World']) as u(h);