aeiou - We can tomatoes, tomato sauce, homemade tomato puree, etc.
When you say "tomato sauce" are you looking for a seasoned sauce, pasta sauce, etc.??????
Tomato sauce can be raw, cooked slightly or cooked for a length of time - it is your preference.
The longer the sauce cooks the thicker it becomes as the water cooks out of it.
Depending on the amount of tomatoes and the size of your pot - I have simmered tomatoes to make puree for up to 2 days non-stop. Yes - the pot was so big and it was one huge batch - no sleeping for 2 days. Unseasoned, plain roma tomatoes.
Regular plain tomato sauce can take 2 to 20 hours depending on the pot.
I have canned pints, quarts, and 1 1/2 qt. jars. Seasoned and unseasoned. Unseasoned gives me the versatality to do what I want with it. Seasoned can set some limitations.
I can spaghetti sauce, with and without meat. Also pizza sauce and other sauces that I use for certain dishes (with peppers and onions or carmalized onions and garlic for instance)
Remember - the longer it simmers - the thicker it gets. Season if you want or you can leave plain. And plain, unseasoned tomatoes can be used in any dish.
So you type of sauce is up to you.