[hibernate-issues] [Hibernate-JIRA] Closed: (HHH-5140) quoted column doesn't be quoted in sub-query

[Strong Liu (JIRA)]

     [ http://opensource.atlassian.com/projects/hibernate/browse/HHH-5140?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Strong Liu closed HHH-5140.
---------------------------


> quoted column doesn't be quoted in sub-query
> --------------------------------------------
>
>                 Key: HHH-5140
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-5140
>             Project: Hibernate Core
>          Issue Type: Bug
>          Components: core
>    Affects Versions: 3.5.1
>            Reporter: Strong Liu
>            Assignee: Strong Liu
>             Fix For: 3.5.x
>
>
> for example:
> {quote}
> 		<union-subclass name="Employee" table="UEmployee">
> 			<property name="title" column="`unique`"/>
> 			<property name="department" column="dept"/>
> 			<many-to-one name="manager" column="mgr_id" class="Employee" cascade="none"/>
> 			<set name="minions" inverse="true" lazy="true" cascade="all">
> 				<key column="mgr_id"/>
> 				<one-to-many class="Employee"/>
> 				<filter name="region" condition="region = :userRegion"/>
> 			</set>
> 		</union-subclass>
> {quote}
> note, that "title" property's column name is unique, and "unique" is a keyword in all DBs,
> hibernate generates the column quoted, like this:
> {quote}
>     create table UEmployee (
>         person_id bigint not null,
>         name varchar(255),
>         company varchar(255),
>         region varchar(255),
>         "unique" varchar(255),
>         dept varchar(255),
>         mgr_id bigint,
>         primary key (person_id),
>         unique (name)
>     )
> {quote}
> but with a simple hql query "from Person", which "Person" is the parent class of Employee, it will issue the following sql query:
> {quote}
>    select
>         person0_.person_id as person1_0_,
>         person0_.name as name0_,
>         person0_.company as company0_,
>         person0_.region as region0_,
>         person0_."unique" as unique1_1_,
>         person0_.dept as dept1_,
>         person0_.mgr_id as mgr3_1_,
>         person0_.contactOwner as contactO1_2_,
>         person0_.clazz_ as clazz_ 
>     from
>         ( select
>             person_id,
>             name,
>             company,
>             region,
>             null as unique,
>             null as dept,
>             null as mgr_id,
>             null as contactOwner,
>             0 as clazz_ 
>         from
>             UPerson 
>         union
>         select
>             person_id,
>             name,
>             company,
>             region,
>             unique,
>             dept,
>             mgr_id,
>             null as contactOwner,
>             1 as clazz_ 
>         from
>             UEmployee 
>         union
>         select
>             person_id,
>             name,
>             company,
>             region,
>             null as unique,
>             null as dept,
>             null as mgr_id,
>             contactOwner,
>             2 as clazz_ 
>         from
>             UCustomer 
>     ) person0_ 
> where
>     person0_.region = ?
> {quote}
> see this "null as unique"?
> this can be reproduced by org.hibernate.test.subclassfilter.UnionSubclassFilterTest

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