SELECT SUM(金额) AS 累计金额
FROM "表名"
WHERE YEAR(日期)=YEAR(NOW())
WHERE {if(MONTH(NOW()) = 1 ,YEAR(日期)=YEAR(NOW())-1,YEAR(日期)=YEAR(NOW()))}
数据集里面可以写if,跟公式里面的差不多,if语句包含在{}里面就行
WHERE YEAR(日期)=YEAR(NOW())-1