为什么我的SQL语句抛出语法错误？

Question

I tried to create a table like so:

CREATE TABLE Persons
(
id int PRIMARY KEY AUTOINCREMENT,
metalId varchar(255),
colorId varchar(255)
)

but it get an error:

1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'AUTOINCREMENT, metalId varchar(255), colorId varchar(255) )' at line 3

Anyone know what's wrong with my code?

Answer 1

You missed an underscore. AUTOINCREMENT should be AUTO_INCREMENT .

• Using AUTO_INCREMENT

Answer 2

Try

CREATE TABLE Persons
(
id int PRIMARY KEY AUTO_INCREMENT,
metalId varchar(255),
colorId varchar(255)
)

Here is main source.

Syntax for MySQL

The following SQL statement defines the "P_Id" column to be an auto-increment primary key field in the "Persons" table:

CREATE TABLE Persons
(
P_Id int NOT NULL AUTO_INCREMENT,
LastName varchar(255) NOT NULL,
FirstName varchar(255),
Address varchar(255),
City varchar(255),
PRIMARY KEY (P_Id)
)

MySQL uses the AUTO_INCREMENT keyword to perform an auto-increment feature.

By default, the starting value for AUTO_INCREMENT is 1, and it will increment by 1 for each new record.

To let the AUTO_INCREMENT sequence start with another value, use the following SQL statement: ALTER TABLE Persons AUTO_INCREMENT=100