Using SqlQuery to get IQueryable

Question

Is there something that can return IQueryablefor a dynamic sql query in Entity Framework 6?

This is what I am using now but it is pulling all the record

Answer 1

I know this question is about EF6 but in case somebody else stumbles upon this question but interested in EFCore, this is actually possible there.

• Source from Docs

Most simple example:

var user = new SqlParameter("user", "johndoe");

var blogs = context.Blogs
    .FromSqlRaw("EXECUTE dbo.GetMostPopularBlogsForUser @user", user)
    .ToList();

Parameters:

var user = new SqlParameter("user", "johndoe");

var blogs = context.Blogs
    .FromSqlRaw("EXECUTE dbo.GetMostPopularBlogs @filterByUser=@user", user)
    .ToList();

More complex example (this is more specifically what this question is asking for):

var searchTerm = ".NET";

var blogs = context.Blogs
    .FromSqlInterpolated($"SELECT * FROM dbo.SearchBlogs({searchTerm})")
    .Where(b => b.Rating > 3)
    .OrderByDescending(b => b.Rating)
    .ToList();

Resulting query for more complex example:

SELECT [b].[Id], [b].[Name], [b].[Rating]
        FROM (
            SELECT * FROM dbo.SearchBlogs(@p0)
        ) AS b
        WHERE b."Rating" > 3
        ORDER BY b."Rating" DESC

A few notes about this method:

• You effectively have to do a SELECT * to make sure all columns are returned from the table.
• Joins to pull back additional data don't work, but Include does in normal SQL queries (not necessarily stored proc/function calls).
• Often times your raw Sql will be put into a subquery. So make sure it's valid for such things (i.e. semicolons, order bys, hints, etc. can cause problems).