CompareWith.cs

// I was just browsing the code, and there's a lot of this repetition.

if (!options.AreAllEnabled(Options.IgnoreKeys))
{
  foreach (var val in ForeignKeys.CompareWith(target.ForeignKeys, options))
  {
    yield return val.AddContext(this);
  }
}

if (!options.AreAllEnabled(Options.IgnoreChecks))
{
  foreach (var val in CheckConstraints.CompareWith(target.CheckConstraints, options))
  {
    yield return val.AddContext(this);
  }
}

// Is there a way to simplify this dramatically?

// Firstly, push the outer most if statement into the inner "CompareWith" so that the options check isn't done there
// Secondly, slap a select to add the context
// Finally, whack it all together with a giant concat statement.
return CheckConstraints.CompareWith(target.CheckConstraints, options).Select(x => x.AddContext(this)).Concat(
       ForeignKeys.CompareWith(target.ForeignKeys, options).Select(x => x.AddContext(this));