Retrieve LINQ to sql statement (IQueryable) WITH parameters

Question

I\'m trying to figure out if there\'s a way to retrieve the (full) sql statement that gets executed on the database server.
I found something already, but it does not exactl

Answer 1

(SqlCommand)dataContext.GetCommand(query)

will give you access to Parameters collection.

Answer 2

You can also see the generated sql query if you have an instance of IQueryable<T> and call the .ToString() method.
For Example:

var db = new DbContext();
IQueryable<Blog> query = db.Blog.Where(tt=> tt.Id > 100).OrderByDescending(tt=>tt.Id);
var sqlString = query.ToString();
Console.WriteLine(sqlString);

This will generate an output of:

SELECT [Extent1].[Id] AS [Id], 
[Extent1].[Title] AS [Title], 
[Extent1].[Author] AS [Author], 
[Extent1].[Text] AS [Text], 
[Extent1].[CreatedAt] AS [CreatedAt], 
[Extent1].[UpdatedAt] AS [UpdatedAt]
FROM [dbo].[Blogs] AS [Extent1]
WHERE [Extent1].[Id] > 100
ORDER BY [Extent1].[Id] DESC

Answer 3

I'm using Datacontext.Log property to get the generated SQL Statement (it includes the statement text, and parameters).

Just set YourDataContext.Log = SomeTextWriter.

It can be written to a file (Log = new StreamWriter(@"c:\temp\linq.log")) or to debug window, see this post

Answer 4

Once you get the Command you can print the CommandText and then loop through the Parameters collection and print all the individual parameters.

Also there is the linq-to-sql debug visualizer which does the same in debug mode.

A really nice tool to view the queries as they are happening is the Linq-to-sql profiler