Is it possible to transfer the database from mysql to postgresql without rewriting queries?

Question

MySQL

Tell me how difficult it is to switch from one database to another, is it possible to do this without rewriting queries (or rewriting a small part of them) and how efficient postgresql will be if I have a kvm server with 4 cores and 4 gigs of RAM and ssd disks

Answer 1

depends on the task (what kind of requests you have, simple ones are easy to transfer, complex ones are difficult).

Answer 2

unconfigured postgres will not be effective anywhere, if queries are not rewritten or rewritten, but not all, why then change mysql to postgresql ?