package com.odiparpack.back.odiparback.student; import org.springframework.data.jpa.repository.JpaRepository; import org.springframework.data.jpa.repository.Query; import org.springframework.stereotype.Repository; import java.util.Optional; @Repository public interface StudentRepository extends JpaRepository { // Transforms to an SQL such as: select * from student where email = ? //@Query("SELECT s FROM Student s WHERE s.email = ?1") // ^ JPQL Optional findStudentByEmail(String email); }