sayedkhalid99 (10/2/2012)
i have changed the my input and output and add date and comments to make it clear, for multiple entry with in a month it shall take the last entry.....
Please confirm that your desired results are correct for sector C, and add a few extra sample rows for B and C, including multiple rows for a single month. It will aid disambiguation. Thanks.
EDIT: more sample data requested.
For fast, accurate and documented assistance in answering your questions, please read this article.
Understanding and using APPLY, (I) and (II) Paul White
Hidden RBAR: Triangular Joins / The "Numbers" or "Tally" Table: What it is and how it replaces a loop Jeff Moden