Spreading data over time

Let's say I have a table with 3 columns:

Hours, StartDate, EndDate

If I want to show a graph with on the X dates and on the Y hours, how can I spread hours over time?

For example:

400, 2019-01-01, 2019-01-29

Graph with X on weekly basis should look like:

100, 100, 100, 100

Are there visuals that can do this? Or do I have to create seperate rows for every date in the data model devided by the amount of days? It would add tons of rows for every existing row. I hope there is a better solution...