sql - 最佳实践 - 将 SQL 查询转换为 LINQ

Question

谁能建议如何将下面的 SQL 转换为 LINQ？

SELECT distinct EmployeeID
  FROM Employee,
       Business
 WHERE Administrator = 1 or 
         (BusinessID = 1 and
         (EmployeeID = Initiator or
          EmployeeID = Owner))

或者也许建议使用多个表达式实现相同结果的更好方法？我读过 LINQ 可能有问题，所以我认为查询越复杂，出现问题的可能性就越大？

Answer 1

听起来您只想：

var query = (from employee in db.Employee
             from business in db.Business
             where employee.Administrator == 1 ||
                 (business.BusinessId == 1 &&
                  (employee.EmployeeId == business.Initiator ||
                   employee.EmployeeId == business.Owner))
             select employee.EmployeeId).Distinct();

我已经猜到哪一列属于哪个表...