How can I make an average of dates in MySQL?

Question

How can I make an average between dates in MySQL? I am more interested in the time values, hours and minutes.

On a table with:

| date_one   | datetime          


        

Answer 1

SELECT TIMESTAMPADD(MINUTE, TIMESTAMPDIFF(MINUTE, '2011-02-12 10:00:00', '2011-02-12 12:00:00')/2, '2011-02-12 10:00:00')

The result is '2011-02-12 11:00:00'