I cant solve error in database [duplicate]

问题

This question already has an answer here:

Closed 7 years ago.

Possible Duplicate:
I have mistake in database

create table Ticket (
ticket_id integer not null primary key,
AirlineName varchar not null,
CustomerName varchar,
fromCity varchar,
toCity varchar,
fltNo integer,
TicketDate date,
Dtime TIME,
Atime time,
price integer);

Please help me, I can't find the error. the program is my sql, and this is the error

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 'not null, CustomerName varchar, fromCity varchar, toCity varchar, fltNo inte' at line 3

回答1:

Now that I know it's MySQL:

Your varchars should have lengths (and phpMyAdmin appears to use INT instead of integer, but both seem to be valid)

CREATE TABLE Ticket(
ticket_id INT PRIMARY KEY ,
AirlineName VARCHAR( 255 ) NOT NULL ,
CustomerName VARCHAR( 255 ) ,
fromCity VARCHAR( 255 ) ,
toCity VARCHAR( 255 ) ,
fltNo INT,
TicketDate DATE,
Dtime TIME,
Atime TIME,
price INT
);

回答2:

Possible solution...
In your case, you use mysql, so this is the correct syntax.
Remember to put the VARCHAR length...

 create table Ticket (
        ticket_id int not null,
        AirlineName varchar(255) not null,
        CustomerName varchar(255),
        fromCity varchar(255),
        toCity varchar(255),
        fltNo integer,
        TicketDate date,
        Dtime TIME,
        Atime time,
        price int, 
        primary key (ticket_id)
    );

来源：https://stackoverflow.com/questions/11675565/i-cant-solve-error-in-database