>I have this very long SQL command which is wrapped into 336 lines. While finishing it, Visual Studio starts crashing as soon as I try to add more lines. Is this a limit?

How exactly you're constructing it? Are you using StringBuilder ?

One alternative will be to use View (on inline table valued function) and another to use stored procedure.

Also in C# you can easily write long block of code with

string LongString = @"This is very long SQL
                                    statement
                                    it may spawn
                                    many lines";

Unfortunately, I don't think there is VB.NET analogue for the same.