org.postgresql.util.PSQLException: ERROR: column user0_.id does not exist - Hibernate

Question

I have a model class that is mapped to a postgres database using hibernate. My model class is:

@Entity
@Table(name=\"USER\")
public class User {

    @Id 
    @G         


        

Answer 1

I obtained using general names like user are making troubles in the app.

I got the same issue as reported here with the following simple entity.

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.SequenceGenerator;

@Entity
public class User implements Serializable {

    private static final long serialVersionUID = 6843302791607583447L;

    @Id
    @SequenceGenerator(name = "user_id_seq", sequenceName = "user_id_seq", allocationSize = 1)
    @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "user_id_seq")
    private Long id;

    @Column
    private String name;

    @Column
    private String password;

    @Override
    public String toString() {
        return name;
    }

    public Long getId() {
        return id;
    }

    public String getName() {
        return name;
    }

    public void setName(final String name) {
        this.name = name;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(final String password) {
        this.password = password;
    }

}

All i did was renaming the entity from User to Sessionxuser (and renaming the datatable from user to sessionxuser to fix this issue.

Schema was still public.

Since pre- or postfix some names like mycoolappuser or usermycoolapp to avoid troubles like this.

Find below a list with reserved keywords and literals preventing using as table, column, and further customized names.

https://www.postgresql.org/docs/8.1/sql-keywords-appendix.html

In this case user is preserved for PostgreSQL, SQL:2003, SQL:1999 and SQL-92.