Wordpress new re-install won't update

I had this little issue wherein I wanted a new re-install of Wordpress or migrating a wordpress database, the site won't update.

The problem exists if the site uses any caching plugins like W3 Cache or WP-Cache.

If this happens to you even you've already deleted the database, try logging in to wp-admin and try to disable the cache plugin.

And you'll see that the Wordpress will go to installation phase.

Problem solved.