Query RelationType

Select * from (Select [DBId], [Id], [Label], [Inverselabel] from [RelationType]) as [Res1] INNER JOIN (Select [DBId], [Id], [Label], [Inverselabel] from [RelationType]) as [Res2] ON ([Res1].[DBId] = [Res2].[DBId] and [Res1].[Label] = [Res2].[Inverselabel] and Not [Res1].[Id] = [Res2].[Id])