Pretty much every RDBMS has this: https://www.postgresql.org/docs/current/explicit-locking.html https://www.postgresql.org/docs/current/explicit-locking.htm...

Pretty much every RDBMS has this: https://www.postgresql.org/docs/current/explicit-locking.html https://www.postgresql.org/docs/current/explicit-locking.htm... There are multiple flavors in PostgreSQL with different locking semantics. And the exact locking semantics may differ between database(for instance postgres does not have gap locks, while MySQL does) so you'd have to read the docs if that detail matters to you.