How to fix “No Dialect mapping for JDBC type: -1” error in java

Question

i\'m getting one error how to resolve this error i.e,

org.hibernate.MappingException: No Dialect mapping for JDBC type: -1
  at org.hibernate.dialect.TypeNam         


        

Answer 1

For my case the type was missing, so setting qu.addEntity(MyBean.class); worked, in your case String.class might work

Answer 2

With me I was having trouble with an unmapped MySQL table column.

Column Type: text

Then I had to use addScalar():

Query query =  em. createNativeQuery(originalQuery);
((SQLQuery) ((HibernateQuery) query).getHibernateQuery())
            .addScalar("column1", new LongType())
            .addScalar("column2", new IntegerType())
            .addScalar("column3", new StringType());
List<Object[]> values = query.getResultList();