How do you extend Linq to SQL?

Question

Last year, Scott Guthrie stated “You can actually override the raw SQL that LINQ to SQL uses if you want absolute control over the SQL executed”, but I can’t find documentation

Answer 1

You want to translate an expression tree into SQL... You need to implement your own IQueryProvider

IQueryProvider Reference
How To

MSDN How To

Answer 2

DataContext x = new DataContext

Something like this perhaps?

var a = x.Where().with()...etc

It lets you have a much finer control over the SQL.

Answer 3

The ability to change the underlying provider and thus modify the SQL did not make the final cut in LINQ to SQL.

Answer 4

Matt Warren's blog has everything you need for that:

http://blogs.msdn.com/mattwar/