“Named query not known” for named Hibernate query?


Shrek Qian
HOME ยป Programming Languages

What might be the problem?


@Entity
@NamedQueries( {
@NamedQuery(name = User.ALL,
query = "SELECT u FROM User u")
})
public class User {
public static final String ALL = "User.all";
}
public class Service {
find... with ... User.ALL
}

Stacktrace:


Caused by: org.hibernate.MappingException: Named query not known: User.all
at org.hibernate.impl.AbstractSessionImpl.getNamedQuery(AbstractSessionImpl.java:93)
at org.hibernate.impl.SessionImpl.getNamedQuery(SessionImpl.java:1407)
at $Session_

Related to : “Named query not known” for named Hibernate query?
“Named query not known” for named Hibernate query?

What might be the problem?


@Entity
@NamedQueries( {
@NamedQuery(name = User.ALL,
query = "SELECT u FROM User u")
})
public class User {
public static final String ALL = "User.all";
}
public class Service {
find... with ... User.ALL
}

Stacktrace:


Caused by: org.hibernate.MappingException: Named query not known: User.all
at org.hibernate.impl.AbstractSessionImpl.getNamedQuery(AbstractSessionImpl.java:93)
at org.hibernate.impl.SessionImpl.getNamedQuery(SessionImpl.java:1407)
at $Session_
Query error for query containing a column named “order”

For the life of me i can seem to figure it out


INSERT INTO category SET CategoryName = 'Hardware_1',
Category = 'HARDWARE', Status = '1', Order = '1'
You have an error in your SQL syntax; check the manual that
corresponds to your MySQL server version for the right syntax
to use near 'Order = '1' at line 1
CREATE TABLE `category` (
`CategoryID` int(11) NOT NULL AUTO_INCREMENT,
`CategoryName` varchar(255) NOT NULL,
`Category` varchar(255) NOT NULL,
`Status` tinyint(4) NOT NULL,
`Order` int(11) NOT NULL,
PRIMARY KEY (`CategoryID`)
) ENGINE=MyISAM DEFAULT CHARSET=latin
JPA Named Query “o”?

I am just curious what the o stands for when I am trying to query.


By default my query is coming out as
@NamedQuery (name="newName" query=SELECT o FROM tableView o)


I am just curious what the o stands for. I have seen several instances of using the letter x and c as well. Just wondering what the difference, if any. Also, why can't I just use a * to select and entire row?


SQL: how to query a column named “Sysdate”

I have a column named Sysdate in several tables, which is causing SQL errors when I try to Select it. It works if "Sysdate" is enclosed in double-quotes, e.g.


SELECT "Sysdate" FROM table1

When I try to use aliases it causes syntax errors:


SELECT t1."Sysdate" FROM table1 AS t1

Please advise.


Thank you,


Max.




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