ms access 2007 - SQL Average Count of records over n months -


I am trying to do something that sounds simple but I do not understand that it is in SQL How to write. I have a table of records with a date field, I would like to get an average average record per month using the date field, it is not AVG which is grouped by month, but an overall average .

So if there are quotes in my table, and in that table there are 7 different months of data, then I have to get: <

records / N months total months

Now I need to get it in SQL.

You can set the DateDiff function to min and < Code> maximum of your date field

: 

  datediff (interval, date1, date2, [first day] Example:  
  SELECT count (*) / dateDiff ('m', minimum (date), max (date), first [first author] ) ...  
 
 How does this work? / P> 
  count  will give you the number of total rows (# of excerpts in your quotation table) and  DateDiff  will be the first and last date

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