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Average number of rows

From: Peter Amberg <son42uk_at_yahoo.co.uk>
Date: 12 Nov 2003 02:47:50 -0800
Message-ID: <f8232d10.0311120247.3da5d273@posting.google.com> 





I have a table T with a column C. The values of C are not distinct,
ie. there are several rows with the same value of C. I want to
calculate the average number of rows with a distinct value of C. For
instance,



Row | C


----+---

  1 | 1
  2 | 1
  3 | 1
  4 | 2
  5 | 9
  6 | 9





The value I want to calculate is 6 rows / 3 distinct values = 2.
Received on Wed Nov 12 2003 - 04:47:50 CST












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