如何使用Distinct（id）将Sql转换为Linq

Question

从MT_Vehicle中选择IsDeleted = 0且CreatedBy = 1

的计数（不同的LicencePlate）

Answer 1

您可以这样写：

var count = db.MT_Vehicle
    .Where( v => v.IsDeleted == 0 && v.CreatedBy == 1 )
    .Select(v => v.LicencePlate)
    .Distinct()
    .Count();

Answer 2

var count = MT_Vehicle.Where(x => x.IsDeleted==0 && x.CreatedBy == 1)
                      .Select(x => x.LicencePlate)
                      .Distinct()
                      .Count();