I have 2 databases. They are internet speed tests. The address table and the speedtest table don't have a unique identifier to link them together (whoops!), but they do have time stamps. I'd like to use the timestamps as a (sort of) identifier.
How do I do a lookup that tests for Time Stamp values that e.g. occur 15 minutes before or after the lookup value.
How do I do a lookup that tests for Time Stamp values that e.g. occur 15 minutes before or after the lookup value.
