ContributionsMost RecentMost LikesSolutionsRe: Sum product in one column by day/date in another columnThis is close to what I'm after but i need to go one step further. Using the attached picture, I'd like to sum the numbers in the left column according to the days in the right column. Sum product in one column by day/date in another columnI have a column with dates and time in one column and in the adjacent column there are corresponding production numbers. What I would like to do is sum the corresponding production numbers BY DAY in the first column. i.e one total at the end of each day in a third column. This is the parent table.