[英]Native SQL throwing Invalid Column Name Exception
I am using Hibernate 3.2.5 for my application. 我正在为我的应用程序使用Hibernate 3.2.5。
I have a Dept
table and an Employees
table. 我有一个
Dept
表和一个Employees
表。
Dept.java Dept.java
private int deptId;
private String deptName;
private Map empMap = new HashMap();
//Getters and Setters
Employees.java Employees.java
private int empId;
private String empName;
private int deptId;
private int age;
private String sex;
private Dept dept;
HBM Mapping file HBM映射文件
<class name="com.jdbc.Dept" table="dept">
<id name="deptId" type="integer" column="DEPT_ID">
<generator class="assigned"></generator>
</id>
<property name="deptName">
<column name="DEPT_NAME"></column>
</property>
<map name="empMap" inverse="false" cascade="all" lazy="true">
<key column="DEPT_ID"></key>
<map-key formula="EMP_ID" type="integer"></map-key>
<one-to-many class="com.jdbc.Employees"/>
</map>
Below is the code for Native SQL: 下面是Native SQL的代码:
SQLQuery query = session.createSQLQuery("Select d.DEPT_ID, e.EMP_NAME from Dept d,Emp e where d.DEPT_ID = e.DEPT_ID")
.addEntity(Dept.class);
List<Dept> departments = query.list();
for(Dept depart :departments)
System.out.println(depart.getDeptName());
I am getting the exception: 我得到了例外:
org.hibernate.exception.GenericJDBCException: could not execute query
at org.hibernate.exception.SQLStateConverter.handledNonSpecificException(SQLStateConverter.java:103)
at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:91)
at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43)
at org.hibernate.loader.Loader.doList(Loader.java:2223)
at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2104)
at org.hibernate.loader.Loader.list(Loader.java:2099)
at org.hibernate.loader.custom.CustomLoader.list(CustomLoader.java:289)
at org.hibernate.impl.SessionImpl.listCustomQuery(SessionImpl.java:1695)
at org.hibernate.impl.AbstractSessionImpl.list(AbstractSessionImpl.java:142)
at org.hibernate.impl.SQLQueryImpl.list(SQLQueryImpl.java:152)
at com.jdbc.HibernateStartup.main(HibernateStartup.java:75)
Caused by: java.sql.SQLException: Invalid column name
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:111)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:145)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:207)
at oracle.jdbc.driver.OracleStatement.getColumnIndex(OracleStatement.java:3295)
at oracle.jdbc.driver.OracleResultSetImpl.findColumn(OracleResultSetImpl.java:1913)
at oracle.jdbc.driver.OracleResultSet.getString(OracleResultSet.java:1514)
at org.hibernate.type.StringType.get(StringType.java:18)
at org.hibernate.type.NullableType.nullSafeGet(NullableType.java:163)
at org.hibernate.type.NullableType.nullSafeGet(NullableType.java:154)
at org.hibernate.type.AbstractType.hydrate(AbstractType.java:81)
at org.hibernate.persister.entity.AbstractEntityPersister.hydrate(AbstractEntityPersister.java:2096)
at org.hibernate.loader.Loader.loadFromResultSet(Loader.java:1380)
at org.hibernate.loader.Loader.instanceNotYetLoaded(Loader.java:1308)
at org.hibernate.loader.Loader.getRow(Loader.java:1206)
at org.hibernate.loader.Loader.getRowFromResultSet(Loader.java:580)
at org.hibernate.loader.Loader.doQuery(Loader.java:701)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:236)
at org.hibernate.loader.Loader.doList(Loader.java:2220)
... 7 more
When I run the query directly in the db, then I am getting the correct output but in hibernate, it is giving an Invalid COlumn name
. 当我直接在db中运行查询时,我得到了正确的输出,但在休眠时,它给出了一个
Invalid COlumn name
。 I have confirmed that the column names are correct only. 我已确认列名称只是正确的。
Kindly let me know how to fix this issue. 请告诉我如何解决这个问题。
you have this in your mapping: 你在映射中有这个:
<column name="DEPT_NAME"></column>
but there is no such column in your sql between Select
and from
: 但是在您的SQL中,
Select
和from
之间没有这样的列:
session.createSQLQuery("Select d.DEPT_ID, e.EMP_NAME from Dept d,Emp e where d.DEPT_ID = e.DEPT_ID")
Hibernate has no possibilitys to bind the attribute. Hibernate没有可能绑定属性。 Try it with this:
试试吧:
session.createSQLQuery("Select d.DEPT_ID, d.DEPT_NAME, e.EMP_NAME from Dept d,Emp e where d.DEPT_ID = e.DEPT_ID")
I had the same issue. 我遇到过同样的问题。
The reason is my column name in annotation is not correct. 原因是注释中的列名不正确。
@Column(name = "CUSTOMER_NAME", length = 200)
should be changed to 应改为
@Column(name = "CUST_NM", length = 200)
Here are my 2cents in addition to what Stefan Beike. 除了Stefan Beike之外,这里还有我的2件。
In your case, the table is small. 在您的情况下,表很小。 But if you are writing a similar query for a large table, and if you don't want the entire columns to be fetched into the memory, writing a new DataTransferObject to use as your resultset-ref would be ideal.
但是,如果您正在为大型表编写类似的查询,并且如果您不希望将整个列提取到内存中,则编写新的DataTransferObject以用作结果集-ref将是理想的。
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