breezejs SubQuery一對多關系

Question

我正在使用AngularJS / Breeze，並且需要使用Breeze格式在SQL后面編寫（ http://www.breezejs.com/documentation/query-examples ）：

SELECT * FROM CONTACT WHERE ID IN（從pharmacy_contact中選擇contact_id，其中pharmacy_id ='11855'。

我的模型類如下：

[Table("pharmacy_contact")]
public class PharmacyContact
{
    [Key]
    public int Id { get; set; }
    public int? PharmacyId { get; set; }
    public int? ContactId { get; set; }

}

[Table("contact")]
public class Contact
{
    [Key]
    public int Id { get; set; }
    public string First_Name { get; set; }
    public string Last_Name { get; set; }
    public string Title { get; set; }
    public string Phone { get; set; }
    public string Extn { get; set; }
    public string Fax { get; set; }
    public string Email { get; set; }
    public string Contact_Daytime { get; set; }
    public string Contact_Method { get; set; }
    public string Contact_Type { get; set; }

}

請讓我知道如何在微風中編寫以上查詢

Answer 1

您可能需要重新編寫SQL語句，如下所示：

SELECT * FROM CONTACT inner join pharmacy_contact  on ID = contact_id where pharmacy_id=11855. 

您可以輕松實現：

 var query = EntityQuery.from('CONTACTS')
    .expand('pharmacy_contacts')
    .where('pharmacy_contacts','any','pharmacy_id', '==', 11855);

假設您修改了contact類別以包括其pharmacy_contacts：

  [Table("contact")]
public class Contact
{
    [Key]
    public int Id { get; set; }
    public string First_Name { get; set; }
    public string Last_Name { get; set; }
    public string Title { get; set; }
    public string Phone { get; set; }
    public string Extn { get; set; }
    public string Fax { get; set; }
    public string Email { get; set; }
    public string Contact_Daytime { get; set; }
    public string Contact_Method { get; set; }
    public string Contact_Type { get; set; }
    public  ICollection<pharmacy_contact> pharmacy_contacts { get; set; }

}

編輯

也是pharmacy_contact類，包括導航回Contact

[Table("pharmacy_contact")]
public class PharmacyContact
{
    [Key]
    public int Id { get; set; }
    public int? PharmacyId { get; set; }
    [ForeignKey("Contact")]
    public int? ContactId { get; set; }
    public contact contact { get; set; }
}