title: Hibernate @Formula doesn't include Schema
body: <p>I have an entity with a property <strong>@Formula</strong> like this:</p>
  
  <pre><code>@Entity
  @Table(name = "areasAuxiliar")
  public final class AreaAuxiliar implements Serializable {
  
      @Id
      @Column(name = "idArea")
      private Integer idArea;
  
      @Formula("RUTAAREA(idArea)")
      private String ruta;
  </code></pre>
  
  <p>when I configure my hibernate to point to an Oracle DB I have no problem,
  BUT, when I switch to an SQLServer, hibernate is not including the <em>shema</em> and the query fails,</p>
  
  <p>the query generated for hibernate looks like this:</p>
  
  <pre><code>select
      areaauxili4_.idArea as idArea1_6_4_,
      rutaArea(areaauxili4_.idArea) as formula2_4_
  from
      SIGAP.areasAuxiliar areaauxili4_ 
  </code></pre>
  
  <p>the param <em>hibernate.default_schema=SIGAP</em> is being read and included in the table but not in the function,</p>
  
  <p>is there an option/annotation to force the shema in in that function?</p>
  
  <p>I have tried hibernate 5.1 and 5.2 with the same result :(</p>