I would want to add another index column inside this table. is there an easier way to do it?
my intention was to find the difference between the dates. therefore i am thinking of using index - index2 to get the results.

I would want to add another index column inside this table. is there an easier way to do it?
my intention was to find the difference between the dates. therefore i am thinking of using index - index2 to get the results.