数据库特有的SQL语法跟HQL有冲突怎么办

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MySQLExtendDialect.java

/**
 * MySQLExtendDialect.java of new_dlog_cn
 */
package com.dlog4j.tester;
 
import org.hibernate.Hibernate;
import org.hibernate.dialect.*;
import org.hibernate.dialect.function.SQLFunctionTemplate;
 
/**
 * MySQL扩展方言
 */
public class MySQLExtendDialect extends MySQLDialect {
 
    public MySQLExtendDialect(){
        super();
        registerFunction("convert_gbk",
                 new SQLFunctionTemplate(Hibernate.STRING, "convert(?1 using gbk)") );
    }
     
}