Linq to sql "Root level data invalid" error for xml null column

Question

I created a table like

CREATE TABLE [dbo].[tab1]( 
 [Id] [int] NOT NULL, 
 [Name] [varchar](100) NOT NULL, 
 [Meta] [xml] NULL, 


CONSTRAINT [PK_tab1] PRIMARY KEY CLUSTERED  
( 
     [Id] ASC 
)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY] 
) ON [PRIMARY] TEXTIMAGE_ON [PRIMARY]

When I do linq for a sql query to retrieve data, it throws an error "data at the root level is invalid linq". In further research, I find out that the meta column in this case is null. In reality, this value is null. Should I remove the nullable value and set the empty node to empty by default or is there another way to get rid of the error.

---

My Linq query that causes an error

     var obj1= (from obj in dbContext.tab1s
  where obj.id== 123
select obj).FirstOrDefault<Tab1>();

Answer 1

, XML NULL.

, XML, .

SQL Server :

UPDATE tab1
SET Meta = 'blah'
WHERE id = 123

, "blah" XML, SQL Server . Linq to SQL , XML XElement. , ​​ , .

, XML, .

Answer 2

[tab1], [tab1s]