How do I store orders?

Question

I have an app which has tasks in it and you can reorder them. Now I was woundering how to best store them. Should I have a colomn for the ordernumber and recalculate all of

Answer 1

Out of your answers I came up with a mixture which goes as follows:

Say we have:

• 1Example (1)
• 2Example (2)
• 3Example (3)
• 4Example (4)
• 5Example (5)

Now if I sort something between 4 and 5 it would look like this:

• 2Example (2)
• 3Example (3)
• 4Example (4)
• 1Example (4.5)
• 5Example (5)

now again something between 1 and 5

• 3Example (3)
• 4Example (4)
• 1Example (4.5)
• 2Example (4.75)
• 5Example (5)

it will always take the half of the difference between the numbers

I hope that works please do correct me ;)