How to use '::' in spring boot? - postgresql

Question

how to use a query from the Postgre to Spring boot?
I used this query to get data in postgre
"SELECT * FROM mytable WHERE delivery_date::date = '2019-10-28' limit 10;"
I'm trying to make a rest fire with an entity like this
#Entity
#Table(name ="mytable")
public class DeliveryDataEntity implements Serializable {
#Column(name="delivery_date")
private Date delivery_date;
#Column(name="delivery_name")
private String delivery_name;
#Id
#Column(name="delivery_id")
private int delivery_id;
}
and my repo code like this
#Repository
public interface DeliveryDataRepository extends PagingAndSortingRepository<DeliveryDataEntity, Date>{
#Query(value="SELECT * FROM mytable WHERE delivery_date = ?1", nativeQuery = true)
Page<DeliveryDataEntity> findByUserAndStatusOrderByCreatedAtDesc(Date delivery_date, PageRequest pageRequest
);
}
If I run there are no errors, but the data isn't readable.
I tried changing the query to be like this
#Query(value="SELECT * FROM mytable WHERE delivery_date >= ?1", nativeQuery = true)
and
Query(value="SELECT * FROM accounts_data WHERE updated \\= ?1", nativeQuery = true)
but, if I run it will get null results.
how do i solve this problem?
thanks

Answer 1

Assuming that the likely problem be the double colon (::) cast operator, which Spring Boot doesn't like, you could try refactoring your query to use a range instead:
SELECT *
FROM mytable
WHERE delivery_date >= '2019-10-28' AND delivery_date < '2019-10-29'
ORDER BY <some column>
LIMIT 10;
The logic in the WHERE clause simply states to find all records whose delivery dates occur on or after midnight of 28-OCT-2019, and strictly before midnight of the following day.
JPA/Hibernate might also support using the CAST function, since Postgres does implement CAST, so this version might also work:
SELECT *
FROM mytable
WHERE (CAST delivery_date AS date) = '2019-10-28'
ORDER BY <some column>
LIMIT 10;

Answer 2

I think you do not need the (::) operator. If you want to consider only dates (without times), you can use the #Temportal annotation, as explained in this Baeldung tutorial.
Also, I think you don't need to use native queries.