CREATE DATABASE IF NOT EXISTS lda; USE lda; CREATE TABLE IF NOT EXISTS user( userName VARCHAR(255) NOT NULL PRIMARY KEY, password VARCHAR(255) NOT NULL, name VARCHAR(255), role VARCHAR(255) ); CREATE TABLE IF NOT EXISTS book ( title VARCHAR(255) NOT NULL PRIMARY KEY, author VARCHAR(255) NOT NULL, publisher VARCHAR(255), oldprice DECIMAL(10, 2), newprice DECIMAL(10, 2), href VARCHAR(255), created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ); INSERT INTO user VALUES ('admin', 'admin', 'admin', 'admin');