MySQL统计函数记录——按月、按季度、按日、时间段统计

按年汇总，统计： select sum(mymoney) as totalmoney, count(*) as sheets from mytable group by date_format(col, '%Y'); 按月汇总，统计：  select sum(mymoney) as totalmoney, count(*) as sheets from mytable group by date_

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