I would like to check if a day is missing during the current month in my result set.The table looks like this.
date balance 2017-06-01 404.66 2017-06-03 392.41 2017-06-07 295.41 2017-06-10 275.41 2017-06-13 155.24 2017-06-15 151.74 2017-06-20 11.15 2017-06-21 -5.15
Since the result set is always within a month, only the difference in days is needed. I need to check the following two cases.
if the difference between dates is 1, then take the corresponding balance as it is,
if the date difference is bigger than 1, then multiply the number of day difference by the previous balance.
EDIT: For example, the day difference between the first two rows is 2. My desired output is 2*404,66. And then, the day difference between 2nd and 3rd row is 4. So 4*392.41.
Is there any short and efficient way of doing this?
I need to analyze more than 300.000 data.