DROP TABLE IF EXISTS memos;
SET SESSION binlog_format = 'ROW';
CREATE TABLE memos (
title varchar(20) PRIMARY KEY,
content varchar(140) NOT NULL
) COLLATE=utf8mb4_general_ci
DEFAULT CHARSET=utf8mb4;
INSERT INTO memos (title, content) VALUES ('Mroonga', 'Mroonga is great!');
SELECT * FROM memos;
title	content
Mroonga	Mroonga is great!
UPDATE memos SET content = 'Mroonga is very great!' WHERE title = 'Mroonga';
SELECT * FROM memos;
title	content
Mroonga	Mroonga is very great!
DROP TABLE memos;
