Error creating table: You have an error in your SQL syntax near 'order( order_id INT UNSIGNED NOT NULL AUTO_INCREMENT, user_id ' at line 1 [duplicate]

问题

This question already has an answer here:

Syntax error due to using a reserved word as a table or column name in MySQL (1 answer)

Closed 5 years ago.

I am trying to create 2 tables in the same MySQL database with a PHP-script: table \'user\' with primary key \'user_id\' and table \'order\' with primary key \'order_id\' and foreign key \'user_id\' from the \'user\' table (1 to many relationship).

Table user creates successfully without problems:

$sql=\"CREATE TABLE user(
    user_id INT UNSIGNED NOT NULL AUTO_INCREMENT,
    type ENUM(\'member\',\'admin\') NOT NULL,
    username VARCHAR(30) NOT NULL,
    email VARCHAR(80) NOT NULL,
    pass VARBINARY(32) NOT NULL,
    first_name VARCHAR(40) NOT NULL,
    last_name VARCHAR(40) NOT NULL,
    date_expires DATE NOT NULL,
    date_created TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
    date_modified TIMESTAMP NOT NULL DEFAULT \'0000-00-00 00:00:00\',
    PRIMARY KEY (user_id),
    UNIQUE (username),
    UNIQUE (email) 
    )ENGINE=InnoDB DEFAULT CHARSET=utf8\";

However, I am not able to create table order:

$sql=\"CREATE TABLE order(
    order_id INT UNSIGNED NOT NULL AUTO_INCREMENT,
    user_id INT UNSIGNED NOT NULL,
    transaction_id VARCHAR(19) NOT NULL,
    payment_status VARCHAR(15) NOT NULL,
    payment_amount DECIMAL(6,2) UNSIGNED NOT NULL,
    payment_date_time TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
    PRIMARY KEY (order_id),
    FOREIGN KEY (user_id) REFERENCES user (user_id)
    )ENGINE=InnoDB DEFAULT CHARSET=utf8\";

I get the following error:

Error creating table: 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 \'order( order_id INT UNSIGNED NOT NULL AUTO_INCREMENT, user_id \' at line 1

Already checked the syntax and cannot find the mistake. Could you please advise what went wrong? Thanks a lot.

回答1:

You need to escape reserved words like order with backticks

CREATE TABLE `order` ( ...

or better use another name instead.

回答2:

order is keyword used by mysql like (select from tbl_name order by id ASC) so for escaping from using keywords you have to use quotes `` to avoid my sql error

so your query should by

$sql="CREATE TABLE `order` (
order_id INT UNSIGNED NOT NULL AUTO_INCREMENT,
user_id INT UNSIGNED NOT NULL,
transaction_id VARCHAR(19) NOT NULL,
payment_status VARCHAR(15) NOT NULL,
payment_amount DECIMAL(6,2) UNSIGNED NOT NULL,
payment_date_time TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
PRIMARY KEY (order_id),
FOREIGN KEY (user_id) REFERENCES user (user_id)
)ENGINE=InnoDB DEFAULT CHARSET=utf8";

enjoy :D

来源：https://stackoverflow.com/questions/19318866/error-creating-table-you-have-an-error-in-your-sql-syntax-near-order-order-id