[hibernate-issues] [Hibernate-JIRA] Updated: (HBX-1067) [SchemaExport] Duplicate unique constraint with unique="true" and natural-id

[SchemaExport] Duplicate unique constraint with unique="true" and natural-id ---------------------------------------------------------------------------- Key: HBX-1067 URL: http://opensource.atlassian.com/projects/hibernate/browse/HBX-1067 Project: Hibernate Tools Issue Type: Patch Affects Versions: 3.2.0.GA Environment: Hibernate 3.2.5, MySQL 5.0.51 (InnoDB), Java 1.5 Reporter: Vincent Ricard Priority: Minor Attachments: HBX-1067.patch In my foo.hbm.xml, if i put this: <natural-id> <property name="barId" column="bar_id" not-null="true" length="128"/> </natural-id> SchemaExport creates this: create table foo (id bigint not null auto_increment, version integer not null, bar_id varchar(128) not null, primary key (id), unique (bar_id)) ENGINE=InnoDB; And MySQL creates only one index for bar_id. But, if my foo.hbm.xml contains this: <natural-id> <property name="barId" column="bar_id" not-null="true" unique="true" length="128"/> </natural-id> SchemaExport generates this: create table foo (id bigint not null auto_increment, version integer not null, bar_id varchar(128) not null unique, primary key (id), unique (bar_id)) ENGINE=InnoDB; And MySQL creates 2 indices for bar_id. So, i think it'd be cool if schemaexport was smarter (even if MySQL could be too).