错误1064（42000）：您的SQL语法有错误；

Question

我有一个MySQL命令：

CREATE DATABASE IF NOT EXISTS courses;

USE courses

CREATE TABLE IF NOT EXISTS teachers(
    id INT(10) UNSIGNED PRIMARY KEY NOT NULL AUTO_INCREMENT,
    name VAR_CHAR(50) NOT NULL,
    addr VAR_CHAR(255) NOT NULL,
    phone INT NOT NULL,
);

当我运行它时，我得到一个错误：

ERROR 1064 (42000): 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 'VAR_CHAR(50) NOT NULL, addr VAR_CHAR(255) NOT
NULL, phone INT NOT NULL, )' at line 3

Answer 1

是varchar不是var_char

CREATE DATABASE IF NOT EXISTS courses;

USE courses;

CREATE TABLE IF NOT EXISTS teachers(
    id INT(10) UNSIGNED PRIMARY KEY NOT NULL AUTO_INCREMENT,
    name VARCHAR(50) NOT NULL,
    addr VARCHAR(255) NOT NULL,
    phone INT NOT NULL
);

您应该使用SQL工具来可视化可能出现的错误，例如 MySQL Workbench 。