SQLGrammarException with native Query in spring boot - sql

Question

I tried to run a GettMapping with Postman. But it's not working and I am getting the error:
Status 500 error. SQLGrammarException: could not extract ResultSet
#GetMapping("/clients/month/{month}")
public Meter getAllMeterByMonth(#PathVariable (value = "month") String month) {
return meterRepository.findByMonth(month);
}
Repository:
public interface MeterRepository extends JpaRepository<Meter, Long> {
Meter findByClientId(Long clientId);
#Query(value = "select * from meter where month = :month", nativeQuery = true)
Meter findByMonth(#Param("month")String month);
}
Client Entity:
#Entity
#Table(name = "clients")
public class Client {
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;
#NotNull
#Size(max = 100)
private String name;
Meter entity:
#Entity
#Table(name = "meters")
public class Meter{
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;
#NotNull
#Column(name="year")
private int year;
#NotNull
#Column(name="month")
private String month;
#NotNull
private int value;
#ManyToOne(fetch = FetchType.LAZY, optional = false)
#JoinColumn(name = "client_id", nullable = false)
#OnDelete(action = OnDeleteAction.CASCADE)
#JsonIdentityInfo(generator=ObjectIdGenerators.PropertyGenerator.class, property="id")
#JsonIdentityReference(alwaysAsId=true)
#JsonProperty("client_id")
private Client client;
Do you have any ideas about my issue ?

Answer 1

You are facing this error just because of a simple typo. Replace meter with meters in the query mentioned in MeterRepository.java.
Something like this:
package com.stackoverflow;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.data.jpa.repository.Query;
import org.springframework.data.repository.query.Param;
public interface MeterRepository extends JpaRepository<Meter, Long> {
#Query(value = "select * from meters where month = :month", nativeQuery = true)
Meter findByMonth(#Param("month")String month);
}