What if int PK is 0?

Question

Database

It never even occurred to me to sculpt 0 as the ID of the first record.
What happens if you put 0 as the ID for the first entry?
Possible mistakes?
Why does auto inc int PK start at 1?

Answer 1

Yes, at least start with INT_MIN, it doesn't matter for the counter to tick from 0, from 1, or from -2147483648.
One is just the default start value in most implementations (I'm not aware of examples of this, but they are possible).