Question

以下是我的SQL查询：

尝试1

INSERT INTO `product`(`productid`, `title`, `category`, `description`) 
VALUES (NULL,`iMac`,`Desktop`,`With its enhanced, big and beautiful display, the new Apple iMac M-D093-B/A 21.5 Desktop Computer renders your movies, photos, web pages and other graphics in truly jaw-dropping detail.`)

尝试2

INSERT INTO `product`(`productid`, `title`, `category`, `description`) 
VALUES(` `,`iMac`,`Desktop`,`With its enhanced, big and beautiful display, the new Apple iMac M-D093-B/A 21.5 Desktop Computer renders your movies, photos, web pages and other graphics in truly jaw-dropping detail.`)

我一直收到错误：MySQL returned an empty result set (i.e. zero rows). ( Query took 0.0003 sec )

我不明白我做错了什么。这是我的列名列表

1  productid int(11)    
2  title varchar(100)
3  category varchar(100)
4  description varchar(2000)

表名：产品

Answer 1

对于值，使用'字符，而不是这个：`````抱歉，我必须找到如何在Markdown中将单个反引号放入内联代码块...

INSERT INTO `product`(`productid`, `title`, `category`, `description`) 
VALUES (NULL,'iMac','Desktop','With its enhanced, big and beautiful display, the new Apple iMac M-D093-B/A 21.5 Desktop Computer renders your movies, photos, web pages and other graphics in truly jaw-dropping detail.')

这应该有用...... Here is the SQLfiddle for it。

修改这是根据zour表定义的解决方案：

INSERT INTO `product`(`title`, `category`, `description`) VALUES ('iMac','Desktop','With its enhanced, big and beautiful display, the new Apple iMac M-D093-B/A 21.5 Desktop Computer renders your movies, photos, web pages and other graphics in truly jaw-dropping detail.')

你有两件事你忘记提及： * productid是PRIMARY KEY（因此，自动NOT NULL）列 - 该列中NULL的任何插入都将失败 * productid是一个AUTO_INCREMENT列 - 您甚至不必将其包含在INSERT语句中，每次插入行时都会填充唯一值

The SQL fiddle for this

Answer 2

您必须对每个'数据类型使用varchar，因此在您的情况下：

INSERT INTO product(productid, title, category, description) VALUES 
(
    NULL,
    'iMac',
    'Desktop', 
    'With its enhanced, big and beautiful display, the new Apple iMac M-D093-B/A 21.5 Desktop Computer renders your movies, photos, web pages and other graphics in truly jaw-dropping detail.'
);

PHPMyAdmin上的SQL查询插入数据不起作用

2 个答案: