1072 - Key column 'UserID' doesn't exist in table

Question

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Hey guys I need your help creating these SQL's, I don't know why I am running into this trouble. it creates the first 2 tables, but when it gets to the Driver table, it throws a fit
Error:

MySQL said: Documentation
#1072 - Key column 'UserID' doesn't exist in table

SQL

CREATE TABLE User (
UserID int(11) NOT NULL AUTO_INCREMENT,
FirstName varchar(50) default NULL,
LastName varchar(50) default NULL,
Email varchar(50) default NULL,
Password varchar(50)default NULL,
PRIMARY KEY (UserID)
)ENGINE=INNODB;


CREATE TABLE Car (
CarID int(11) NOT NULL AUTO_INCREMENT,
Make varchar(50) default NULL,
Year int(11) default NULL,
Color varchar(50) default NULL,
PRIMARY KEY (CarID)
)ENGINE=INNODB;

CREATE TABLE Driver (
DriverID int(11) NOT NULL AUTO_INCREMENT,
PRIMARY KEY (DriverID),
FOREIGN KEY (UserID) REFERENCES User (UserID),
FOREIGN KEY (CarID) REFERENCES Car (CarID)
)ENGINE=INNODB;

CREATE TABLE Request (
RequestID int(11) NOT NULL AUTO_INCREMENT,
From varchar(50) default NULL,
To varchar(50) default NULL,
RequestDate Date default NULL,
PRIMARY KEY (RequestID),
FOREIGN KEY (UserID) REFERENCES User (UserID),
FOREIGN KEY (CarID) REFERENCES Car (CarID)
)ENGINE=INNODB;

Thanks for your help.

Posted 3-Nov-13 6:36am

rudolph098

Updated 9-Jun-23 1:41am

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3 solutions

Solution 3

you just write id in the primary key not write userid, carid

Posted 1-Jul-21 8:11am

Member 15272509

Comments

Richard Deeming 2-Jul-21 4:30am

This question was solved nearly eight years ago, and you have added nothing new to the discussion.

CHill60 2-Jul-21 5:38am

Completely inaccurate. The problem was because the OP was trying to use non-existing columns as FOREIGN keys to another table. There was no problem with their aptly named primary key at all

Solution 4

you just write id int in primary number you change the #id as #userid then work by:-shivam mandal

Posted 9-Jun-23 1:41am

Member 16025648

Comments

Richard Deeming 9-Jun-23 7:47am

The question was solved ten years ago, and your "solution" is virtually identical to solution 3 - which was already not a good solution to the question.

Stick to answering new questions unless you have something new and interesting to add to the discussion.

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CHill60 · Accepted Answer · 2013-11-03T06:54:00

You are trying to set up a Foreign key on a column that you have not yet created. Try this ...

SQL

CREATE TABLE Driver (
DriverID int(11) NOT NULL AUTO_INCREMENT,
UserID int,
CarID int,
PRIMARY KEY (DriverID),
FOREIGN KEY (UserID) REFERENCES User (UserID),
FOREIGN KEY (CarID) REFERENCES Car (CarID)
)ENGINE=INNODB;