as per https://docs.jboss.org/hibernate/orm/5.4/userguide/html_single/Hibernate_User_Guide.html#configurations-mapping, there is a configuration to enable automatic keyword quoting (by default it is disabled), i.e. hibernate.auto_quote_keyword. If you found enabling it doesn’t work as expected, for sure this is a bug. Also, I found the rank function has been registered in MySQL8 dialect.