I have a database for a direct mail project that contains a field to identify the specific letter for each recipient. This field contains both numbers and numbers with letters. Example: 21353231 and 33233021BOA.
I need a query to identify the total number of records processed for each letter...
I have a database based on airplane usage. When the airplane returns from use a reading (hour meter) is taken and placed in the log. I have been trying to develop a query that will take the current reading and subtract the reading from the previous record. The result would be the flight time...
I am new to this board and have a question.
I have a database set to log hours of use based on an hour meter. To calculate current record usage I would subtract the previous record meter reading from the current record meter reading. Entering a beginning meter reading would seem redundant but...
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