....

examcloud-core-basic-dao/src/main/java/cn/com/qmth/examcloud/core/basic/dao/entity/OrgEntity.java

@@ -51,7 +51,7 @@ public class OrgEntity extends JpaEntity {
 	@Column(nullable = true)
 	private String remark;
 
-	@Column(nullable = true)
+	@Column(nullable = true, unique = true)
 	private String domainName;
 
 	public Long getId() {