[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-5173) hql - average returns double but looses the decimal part

[Sébastien Peters (JIRA)]

    [ http://opensource.atlassian.com/projects/hibernate/browse/HHH-5173?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=36776#action_36776 ] 

Sébastien Peters commented on HHH-5173:
---------------------------------------

Average function called from inside a NamedQuery:

@Entity
@Table(name = "review")
@Cache(usage = CacheConcurrencyStrategy.READ_ONLY)
@NamedQueries( { 
 @NamedQuery(name = "Review.getAverageRatingForSite", query="SELECT AVG(r.rating) FROM Review r WHERE r.site.mySiteId = :mySiteId AND r.active=true")
 ...
} )
public class Review {
 @Id
 @GeneratedValue(strategy = GenerationType.IDENTITY)
 @Column(name = "id", nullable = false)
 private Long id;

...

 @Column(nullable = false, columnDefinition = "INT DEFAULT 3")
 @javax.persistence.Enumerated()
 private Integer rating;
...
}

> hql - average returns double but looses the decimal part
> --------------------------------------------------------
>
>                 Key: HHH-5173
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-5173
>             Project: Hibernate Core
>          Issue Type: Bug
>    Affects Versions: 3.5.0-Final
>         Environment: Database driver: hsqldb
> OS: Mac-Os
> Hibernate: 3.5.0-Final
>            Reporter: Sébastien Peters
>
> HQL:
>  select avg(r.rating) from Review r
>  for the values 2,2,2,1,2 it should return 1.8 instead of 1.0
> type of rating: integer

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