SQL查询中插入数据不能正常工作

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.`) 

我不断收到一个错误：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，而不是这一个：```（对不起，我得找出如何放一个反引号成降价行内代码块...）

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.') 

这应该工作... Here is the SQLfiddle for it。

编辑 这是解决按代尔铝-Zour表定义：

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.') 

你有两件事情你忘了提： * productid是PRIMARY KEY（因此，自动NOT NULL）列 - 任何在该列中使用NULL的插入都将失败 * productid是一个AUTO_INCREMENT列 - 您甚至不必将其包含在INSERT语句中，每当您将其填入唯一值时插入一行

The SQL fiddle for this

Answer 2

你必须使用'每varchar，数据类型，所以你的情况：

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.' 
);