"I think the author did not understand Kimball in First place"
Well you're entitled to your opinion. As am I. I think I understand Kimball's prescriptive methods pretty well and am well qualified to question them.
"The date ranges in the example are overlapping and that is not correct. You can not have a record ending on 27/11/2009 and next record starting on the same day"
Says who? The difference is simply the choice between "less then" versus "less than or equal to" in one's query. Thanks for making the same mistake as many previous commenters. You've fundamentally misunderstood the point of the post.
"it does work if you are a experienced practitioner"
Sure it does. And it doesn't warrant one being an "experienced practitioner" as you clearly believe yourself to be in order to do so. That said I wholly believe there is value in questioning the legitimacy of ivory tower solutions when applied to real-world scenarios and that is what I did here.
Thank you for the comment.
