At 13:18 +0200 6/29/03, Mark Rowlands wrote:
I have a tabletheres a surprise
month protocol port utime
06 tcp21 12
06 tcp21 13
05 udp 43 100232
05 udp 21 100245
what I would like to do is select by month and by protocol but within
protocol limit to the top 5 by count of port.
In other words,I want the 5 most common instances of port per instance of
protocol per instance of month.
is this actually possible with a single query (mysql 4.0)?
I have tried vairious combinations of group by and order by but however I do
it, limit n, seems to do just that...limit the results to n rows...
LIMIT is applied after all the other stuff. It won't do what you want.
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Paul DuBois, Senior Technical Writer
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