select `dateTime`, 
	sum(`result`=(case when result='勝' then '勝'
		 end)) as '勝',
	 sum(`result`=(case when result='負' then '負'
	 	end)) as '負' 
	 from exam  group by `dateTime`, 
	 `result`=(case when result='勝' then '勝'
		when result='負' then '負'
	 	end)

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