I use this query to get a grand total of a number of counts:

  (1) SELECT TOTAL(count) as grandTotalCount FROM History

Next, I step through the counts, grouped by column 'hour:

  (2a) SELECT TOTAL(count) as subTotalCount, hour FROM History GROUP BY hour

I use grandTotalCount in the loop to compute percentages of the whole for each 
subTotalCount.  I also need to scale (normalize) the percentages, and for that 
I need to know the largest subTotalCount in advance of the loop.  I can do that 
by ordering the results by the subtotals and saving the subTotalCount of the 
first result row as largestSubTotalCount: 

  (2b) SELECT TOTAL(count) as subTotalCount, hour FROM History GROUP BY hour 
ORDER BY 1 DESC

But, I'd prefer that last query be "ORDER BY hour", and thus I need a separate 
query to get the largest subTotalCount.  This works:

  (3) SELECT TOTAL(count) as largestSubTotalCount FROM History GROUP BY hour 
ORDER BY 1 DESC LIMIT 1

Can (1) and (3) be combined to return grandTotalCount and largestSubTotalCount?


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