1--disable_warnings 2DROP DATABASE IF EXISTS d1; 3--enable_warnings 4CREATE DATABASE d1; 5SHOW DATABASES; 6SHOW DATABASES LIKE 'd%'; 7SHOW DATABASES LIKE '%'; 8USE d1; 9DROP DATABASE d1; 10CREATE SCHEMA d1; 11SHOW SCHEMAS; 12SHOW SCHEMAS LIKE 'd%'; 13SHOW SCHEMAS LIKE '%'; 14USE d1; 15DROP SCHEMA d1; 16 17