Niels commented on an issue
Hibernate ORM / Bug HHH-8120
Update schema doesn't create unique constraints.
Update schema doesn't create unique constraints.

When property *hibernate.hbm2ddl.auto* is set to *update*, unique constraints will not be generated, when set to
*create* unique constraints will be generated.

Description of source code which produces this error
When schema is updated the method
{noformat}
org.hibernate.cfg.Configuration.gene...