通过比较两列上的相等值来连接两个表

Question

为简单明了，假设我有这三个表。

员工 [ ID ]

EmployeeName [ 员工ID， 名称 ]

EmployeeAddress [ 员工ID， 地址 ]

定义的唯一属性/关系位于'子表'EmployeeName＆amp; EmployeeAddress

• EmployeeName BelongsTo Employee
• EmployeeAddress BelongsTo Employee

主Employee表中没有属性/关系（集合），例如

• 员工HasMany EmployeeName
• 员工HasMany EmployeeAdress。

我想在EmployeeName和EmployeeAddress之间使用DetachedCriteria执行联接 （不涉及员工），因此

  

选择EmployeeName.name，EmployeeAddress.address
  来自EmployeeName内部联接EmployeeAddress
  EmployeeName.employeeId = EmployeeAddress.employeeId和         EmployeeAddress.address，如'％somelocation％'，按EmployeeAddress.address

排序

Answer 1

不完全是你正在寻找的查询，并且没有测试它是否确实有效..但它可能对你有帮助：

var addressCriteria = DetachedCriteria.For<EmployeeAddress>("ea")
                                      .Add(Restrictions.Like("ea.Address", "somelocation", MatchMode.Anywhere));
var nameCriteria = DetachedCriteria.For<EmployeeName>("en")
                                   .Add(Subqueries.PropertyIn("en.Employee", addressCriteria))
                                   .SetProjection(Projections.Property("en.Name"));