Question

select id,name,amount,sort 
from 
(select id,name,amount,sort,gift_id,count(gift_id) 
from 
(select * from t_lpw_gift g join t_lpw_dianxin_gift d on g.id=d.gift_id) 
group by gift_id,id,name,amount,sort order by count(gift_id) desc) 
where rownum <=5;

how to use jpa createNativeQuery to select,database is oracle

table:

SQL> desc t_lpw_gift;
Name   Type         Nullable Default Comments 
------ ------------ -------- ------- -------- 
ID     INTEGER                                
NAME   VARCHAR2(32)                           
PRICE  NUMBER                                 
AMOUNT INTEGER                                
SORT   VARCHAR2(32) Y                         

SQL> desc t_lpw_dianxin_gift;
Name        Type    Nullable Default Comments 
----------- ------- -------- ------- -------- 
GIFT_ID     INTEGER                           
DIANXIN_ID  INTEGER                           
GIFT_NUMBER INTEGER Y  

return Entity is t_lpw_gift

public List<Gift> getHotGifts(int topHotGiftsNum) {
    String sql = "select id,name,amount,sort from (select id,name,amount,sort,gift_id,count(gift_id) from (select * from t_lpw_gift g join t_lpw_dianxin_gift d on g.id=d.gift_id) group by gift_id,id,name,amount,sort order by count(gift_id) desc) where rownum <= :topHotGiftsNum";
return (List<Gift>)em.createNativeQuery(sql,Gift.class).setParameter("topHotGiftsNum", topHotGiftsNum).getResultList();
}

18:55:11,473 WARN [org.hibernate.util.JDBCExceptionReporter] SQL Error: 17006, SQLState: 99999
18:55:12,992 ERROR [org.hibernate.util.JDBCExceptionReporter] 列名无效()

Answer 1

On native SQL parameters in JPA, you need to use a positional parameter instead of a named parameter. Named parameters are not supported according to the spec.

So, change :topHotGiftsNum to ?1, and setParameter(1, topHotGiftsNum).

See this answer

Edit: OK, that wasn’t it. This should be it: the select clause is missing some property from the entity, or one of the columns in the select clause is mis-typed. Your select clause needs to include all of the columns from the entity, without any difference in names. As per this thread from Hibernate forums.