亚音速3忽略select()中的列

我有一张这样的桌子。

CREATE TABLE [dbo].[Locations_Hours](
  [LocationID] [int] NOT NULL,
  [sun_open] [nvarchar](10) NULL,
  [sun_close] [nvarchar](10) NULL,
  [mon_open] [nvarchar](10) NULL,
  [mon_close] [nvarchar](10) NULL,
  [tue_open] [nvarchar](10) NULL,
  [tue_close] [nvarchar](10) NULL,
  [wed_open] [nvarchar](10) NULL,
  [wed_close] [nvarchar](10) NULL,
  [thu_open] [nvarchar](10) NULL,
  [thu_close] [nvarchar](10) NULL,
  [fri_open] [nvarchar](10) NULL,
  [fri_close] [nvarchar](10) NULL,
  [sat_open] [nvarchar](10) NULL,
  [sat_close] [nvarchar](10) NULL,
  [StoreNumber] [int] NULL,
  [LocationHourID] [int] IDENTITY(1,1) NOT NULL,
 CONSTRAINT [PK_Locations_Hours] PRIMARY KEY CLUSTERED 
(
  [LocationHourID] ASC
)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]
) ON [PRIMARY]

亚音速3正在生成一个具有以下性质的类

int LocationID
string monopen
string monclose
string tueopen 
string tueclose
string wedopen 
string wedclose
string thuopen 
string thuclose
string friopen 
string friclose
string satopen 
string satclose
string sunopen 
string sunclose
int? StoreNumber
int LocationHourID

当我试图对这个类执行这样的查询时..

var result = DB.LocationHours.Where(o => o.LocationID == _locationId);

这是亚音速生成的结果sql查询。

SELECT [t0].[LocationHourID], [t0].[LocationID], [t0].[StoreNumber]
FROM [dbo].[Locations_Hours] AS t0
WHERE ([t0].[LocationID] = 4019)

我不明白为什么亚音速忽略了 nvarchar 生成select语句时的字段。有人有什么想法吗?