engine : Memory CREATE DATABASE default\nENGINE = Memory()\nCOMMENT \'Test DB with comment\' comment= Test DB with comment engine : Atomic CREATE DATABASE default\nENGINE = Atomic\nCOMMENT \'Test DB with comment\' comment= Test DB with comment engine : Ordinary CREATE DATABASE default\nENGINE = Ordinary\nCOMMENT \'Test DB with comment\' comment= Test DB with comment engine : Lazy(1) CREATE DATABASE default\nENGINE = Lazy(1)\nCOMMENT \'Test DB with comment\' comment= Test DB with comment