How many solutions are in "https://github.com/derickbailey/presentations-and-training.git"?
solutions refers to Solution.Id; https://github.com/derickbailey/presentations-and-training.git refers to Url; Url; = 'https://github.com/derickbailey/presentations-and-training.git';
SELECT COUNT(T2.RepoId) FROM Repo AS T1 INNER JOIN Solution AS T2 ON T1.Id = T2.RepoId WHERE T1.Url = 'https://github.com/derickbailey/presentations-and-training.git'