Select top 1 result using JPA

Question

I need to bring from DB only one single result  How can I do that with JPA   Select top 1   from table   I tried       select t from table t    query setMaxResults 1    query getSingleResult      but didn t work  Any other ideas

User · Answer

Use a native SQL query by specifying a  NamedNativeQuery annotation on the entity class  or by using the EntityManager createNativeQuery method  You will need to specify the type of the ResultSet using an appropriate class  or use a ResultSet mapping

User · Answer

Try like this  String sql    SELECT t FROM table t   Query query   em createQuery sql   query setFirstResult firstPosition   query setMaxResults numberOfRecords   List result   query getResultList      It should work  UPDATE   You can also try like this  query setMaxResults 1  getResultList

User · Answer

To use getSingleResult on a TypedQuery you can use  query setFirstResult 0   query setMaxResults 1   result   query getSingleResult

User · Answer

The easiest way is by using  Query with NativeQuery option like below    Query value  SELECT 1   FROM table ORDER BY anyField DESC LIMIT 1   nativeQuery   true

[java] Select top 1 result using JPA

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