Let's say I have these results from a subquery. They are are grouping by date with the MAX() of a unique identifier [xxxxx]. Assume the number appended to the unique identifer describes the highest number. This means the 05/08/13 unique identifer is the greatest.
05/05/13 xxxx1
05/07/13xxxx2
05/08/13 xxxx3
I have a table with the following two dates. I expect the results in bold italic
05/06/13 xxxx3
05/07/13 xxxx2
What I'm asking to occur is when there is a date match, provide me the associated unique identifer. If there is no match on date, provide me the greatest unique identifer.
How can I do this with a query?
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