Java Hibernate SQL语法异常

我已经为这样一个学生类创建了一个MySQL存储过程，我想在Hibernate中调用这个存储过程

存储过程：

DELIMITER $$

DROP PROCEDURE IF EXISTS `StudentProcedure`$$

CREATE  PROCEDURE `StudentProcedure`(IN studentNo varchar(12) )
BEGIN
SELECT SNAME FROM Student WHERE SNO=studentNo;
END$$

DELIMITER ;

我的Pojo课程：

package edu.model;

public class Student {
    private String studentNo;
    private String studentName;
    public String getStudentNo() {
        return studentNo;
    }
    public void setStudentNo(String studentNo) {
        this.studentNo = studentNo;
    }
    public String getStudentName() {
        return studentName;
    }
    public void setStudentName(String studentName) {
        this.studentName = studentName;
    }
}

HBM文件：

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC 
    "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
    "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
    <class name="edu.model.Student" table="Student">
        <id name="studentNo" column="SNO">
        <generator class="assigned"/>           
        </id>
        <property name="studentName">
            <column name="SNAME" />
        </property>
    </class>
    <sql-query name="StudentProcedure" callable="true">
    <return alias="student" class="edu.model.Student">
    <return-property name="studentName" column="SNAME">
    </return-property>
    </return>
    <![CDATA[CALL StudentProcedure(:studentNo)]]>   
    </sql-query>
</hibernate-mapping>

当我运行我的类时，我面临以下异常：

SEVERE: Column 'SNO0_0_' not found.
Hibernate Exception>>>org.hibernate.exception.SQLGrammarException..........+could not execute query

有人能帮我吗 谢谢

您还需要为SNO定义return属性

<return-property name="studentNo" column="SNO">
</return-property>

<return-property name="studentNo" column="SNO">
</return-property>