DROP TABLE IF EXISTS users;
SET NAMES utf8mb4;
CREATE TABLE users (
first_name VARCHAR(32) NOT NULL,
last_name  VARCHAR(32) NOT NULL,
KEY (first_name, last_name)
);
INSERT INTO users VALUES("Taro",   "Yamada");
INSERT INTO users VALUES("Hanako", "Tanaka");
INSERT INTO users VALUES("Joe",    "Honda");
SELECT * FROM users;
first_name	last_name
Hanako	Tanaka
Joe	Honda
Taro	Yamada
ALTER TABLE users DISABLE KEYS;
TRUNCATE users;
SELECT * FROM users;
first_name	last_name
DROP TABLE users;
