Is there a concurrency with UPDATE count=count+1?

Question

I wanted to know, will I run into any concurrency problem with this?

This is NOT in a transaction. This code is for Sqlite(prototype), but I plan to use it

Answer 1

not a problem You will have implicit transaction anyway. So it should not be a problem.

Even if you change TRANSACTION ISOLATION LEVEL, it should work just fine, at least on SQLServer.