Get the Roll up column type to save the result in one row only?

Hello all!

Just a quick question, I am struggling with the Rollup column type to display the results to one specific row, and not the whole column.

I am creating a Food tracker app where I have:

  • One tab to calculate the Calories/carbs with the quantities of the food I eat.

  • The other Tab - A calendar where I can see per day How much I have eaten.

So I found the Rollup Column type to sum the calories of all the ingredients I have entered in the calculator.But I am enable to tell the database that this calculation should be saved for one day only, and not applicable to everyday in my calendar :frowning:

I am guessing I need to save the Rollup Sum for one specific Day = one ID, but I am blocked.

Thanks for your help!

For reference.