Of course if you have a very specific query you need to run, consider creating a stored procedure on your database. (LINQ to SQL can handle these well, and I’m sure the story is similar with LINQ to Entities).

Thanks for your response. one another query left/right outer join is possible in linq to entities ?. if not so is there any another way out for this. plz.

Regards
Brijesh

Using the partial class for your object, add a SubmitChanges(DataContext) method. The DataContext class provides a useful ExecuteCommand(string, params object[]) method. You can use this to execute a SQL command directly against your connection. Do not build a SQL string by concatenating the required bits together. Place all your parameters in the params portion of the method call. Here’s an example for the class above:

public partial class SimpleRecord
{
   public void SubmitChanges(DataContext db)
   {
      db.ExecuteCommand(@"UPDATE [dbo].[SimpleTable]
         SET [value] = {0}
         WHERE [identifier] = {1}",
         this.Value, this.Identifier);
   }
}

You will likely want to wrap some exception handling around that. By using the String.Format style in your command you are not simply substituting the values into your query. Instead you are building a parameterized query (e.g. {0} would be replaced with @p0). This way you are still separating the the data from the command.

But finally, define a primary key. Your database table should have one anyway.

i am having the same scenario where in a table there is no primary key.
In above suggested blog add a primary key in table but is there any othere wayout where without adding a new entity as primary key.
its urgent.
Thanks
brijesh