DROP TABLE IF EXISTS diaries;
CREATE TABLE diaries (
id INT PRIMARY KEY AUTO_INCREMENT,
title VARCHAR(40),
body VARCHAR(140)
) DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
INSERT INTO diaries (title, body) VALUES ("survey", "will start groonga!");
SELECT * FROM diaries;
id	title	body
1	survey	will start groonga!
ALTER TABLE diaries DROP COLUMN body;
SELECT * FROM diaries;
id	title
1	survey
INSERT INTO diaries (title) values ("groonga (1)");
INSERT INTO diaries (title) values ("groonga (2)");
SELECT * FROM diaries;
id	title
1	survey
2	groonga (1)
3	groonga (2)
DROP TABLE diaries;
