语法错误CREATE TABLE

Question

我想打一个表中的phpmyadmin，我使用的SQL命令为

CREATE TABLE userdetail( 
detailid INT(255) UNSIGNED AUTO_INCREMENT PRIMARY, 
name varchar(255) NOT NULL, 
address text, 
phone varchar(13) NOT NULL, 
email_id varchar(255), 
userId int(20) NOT NULL, 
reg_date TIMESTAMP 
) 

我收到此错误：

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 ' name varchar(255) NOT NULL, address text, phone varchar(13) NOT ' at line 2

Answer 1

它应该是这样的

CREATE TABLE userdetail( 
    detailid INT(255) UNSIGNED AUTO_INCREMENT PRIMARY KEY, 
    name varchar(255) NOT NULL, 
    address text, 
    phone varchar(13) NOT NULL, 
    email_id varchar(255), 
    userId int(20) NOT NULL, 
    reg_date TIMESTAMP); 

Answer 2

你失踪KEYPRIMARY：

CREATE TABLE userdetail ( 
    detailid INT(255) UNSIGNED AUTO_INCREMENT PRIMARY KEY, 
    name varchar(255) NOT NULL, 
    address text, 
    phone varchar(13) NOT NULL, 
    email_id varchar(255), 
    userId int(20) NOT NULL, 
    reg_date TIMESTAMP 
) 

注意int(255)真的没有本质NSE。您是否熟悉整数数据类型以及括号中的值是什么意思？您可以查看文档here。