-----------+------------+---------+-----+-----+---------+--------++-----+-----+---------+--------++-----+-----+---------+,
AVG(CASE WHEN rn IN (FLOOR((@tr+1)/2), FLOOR((@tr+2)/2))
那么,在Python中执行此操作的绝对最快方法是什么?2000x500和5个随机组):cols = 500groupsresult = np.zeros(data.shape) # Pre-allocating the result
f = lambda x: (x-np.average(x))/np.std(x)