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MySQL: Get Range Where there are Two or More Matches

Posted on 2013-05-16
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Last Modified: 2013-05-16
Using MySQL, I would like to get the range ( max - min ) for values.

The problem with my query is that I want it to return NULL if there are less than 2 matches for the time period.

In this example, the value of "BIDRANGE4" should be NULL not 0.

http://sqlfiddle.com/#!2/94d35/1
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Question by:hankknight
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