Sat Mar 29
Git practice
Author：Noritaka
**UNIQUE**
**CHECK**
DROP TABLE IF EXISTS posts;
CREATE TABLE posts (
message VARCHAR(140) UNIQUE,
like INT CHECK (likes >= 0 AND likes <= 100)
);
INSERT INTO posts (message, likes) VALUES
('Thanks', 12),
('Arigato', 4),
('Merci', 4);
INSERT INTO posts (message) VALUES ('Gracias');
SELECT * FROM posts;