text: DROP TABLE IF EXISTS t1;
  DROP TABLE IF EXISTS t2;
  DROP TABLE IF EXISTS t3;
  
  CREATE TABLE t1(c1 int) ENGINE = Null;
  CREATE TABLE t2(c1 int) ENGINE = Null;
  CREATE TABLE t3(c1 int) ENGINE = Null;
  
  DROP DATABASE IF EXISTS ss;
  DROP DATABASE IF EXISTS ss1;
  DROP DATABASE IF EXISTS ss2;
  
  CREATE DATABASE ss;
  CREATE DATABASE ss1;
  CREATE DATABASE ss2;
  
  
  SHOW TABLES;
  
  SHOW TABLES LIKE 't%';
  SHOW TABLES LIKE 't2';
  SHOW TABLES LIKE 't';
  
  SHOW TABLES WHERE name LIKE 't%';
  SHOW TABLES WHERE name = 't%' AND 1 = 0;
  SHOW TABLES WHERE name = 't2' OR 1 = 1;
  SHOW TABLES WHERE name = 't2' AND 1 = 1;
  
  SHOW DATABASES WHERE DATABASE = 'ss';
  SHOW DATABASES WHERE DATABASE like 'ss%';
  SHOW DATABASES like 'ss%';
  SHOW DATABASES like SUBSTRING('ss%' FROM 1 FOR 3);
  
  DROP DATABASE IF EXISTS ss;
  DROP DATABASE IF EXISTS ss1;
  DROP DATABASE IF EXISTS ss2;
  
  DROP TABLE IF EXISTS t1;
  DROP TABLE IF EXISTS t2;
  DROP TABLE IF EXISTS t3;
  