创建库
create database bookstore;
USE bookstore;
JOIN
update delete
UPDATE books
SET title = 'Amerika'
WHERE isbn = '0805210644';
DELETE FROM books
WHERE author_id = '2034';
创建库
create database bookstore;
USE bookstore;
UPDATE books
SET title = 'Amerika'
WHERE isbn = '0805210644';
DELETE FROM books
WHERE author_id = '2034';