I have a query of a table of completed Preventive Maintenance with dates, serial #'s and hour meter readings. I group that query using group by last date and end up with the most recent PM date for each serial number. I need to query for the next to last PM, so I can subtract the next to last...
I am working on a Preventive Maintenance Database and want to compare the last date of PM to the previous date of PM from a table with completed PM data. I can query to get the date of the last PM, but how do I query to get the date of first PM previous to the last?
I am working on a Preventive Maintenance Database and want to take the last date of PM and compare it to the previous date of PM. How can I get a query to return the first previous date of PM from a table of completed pm dates?
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