You're making this much more complicated than it needs to be.  You're 1) adding a column, 2) updating the column, 3) deleting rows based on the column values, and presumably...

This is one of the cases where changing your point of reference greatly simplifies your calculations.  If your...

You didn't say what results you were expecting.  John pivoted the table, but I did not.

The issue you were having duplicating the article is that it depends on...

Scrap the whole thing and use the right tool for the job.  You're trying to use a database to replicate a spreadsheet.  Just use a spreadsheet in the first place.

The main problem that you're encountering here is that your MeetingDetails table is a weird hybrid of an...