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I thought hibernate takes into consideration only instance variables that are annotated with @Column . But strangely today when I added a variable (that is not mapped to any column, just a variable i need in the class), it is trying to include that variable in the select statement as a column name and throws the error - Unknown column 'team1_.agencyName' in 'field list' My class - @Entity @Table(name="team") public class Team extends BaseObject implements Serializable { @Id @GeneratedValue(strategy=GenerationType.AUTO) private Long id; @Column(length=50) private String name; @Column(length=10) private String code; @Column(name = "agency_id") private Long agencyId; private String agencyName; //note: not annotated. } FYI...I use the above class in another class with many to many mapping @ManyToMany(fetch = FetchType.EAGER) @JoinTable( name="user_team", joinColumns = { @JoinColumn( name="user_id") }, inverseJoinColumns = @JoinColumn( name="team_id") ) public Set<Team> getTeams() { return teams; } Why is this happening?!

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