Please run the command with the --dump-sql option instead of --force each time before launching it for real, to be able to see which SQL queries are executed in both cases

I'm not sure how to roll back the changes so that I can reproduce this.

Got it after a little poking around with git. Rolling back to a commit in my code before the one given here didn't didn't show this reproduce this.

$ php app/console doctrine:schema:create
ATTENTION: This operation should not be executed in a production environment.

Creating database schema...
Database schema created successfully!

$ git checkout d686a39fb664dca540167e1b3e96ea0ffd67bc00
Previous HEAD position was 0510a59... * First round of Customer-to-Accounts (1:n) mapping done * Start of Customer-to-Tn and Tn-to-Account mapping
HEAD is now at d686a39... * A little debugging for Entity::Customer::hasEntitlement * Add FK for Customer to Tn

$ php app/console doctrine:schema:update --dump-sql
ALTER TABLE Account CHANGE guid guid VARCHAR(255) NOT NULL;
ALTER TABLE Tn DROP FOREIGN KEY FK_3504C6F09B6B5FBA;
DROP INDEX IDX_3504C6F09B6B5FBA ON Tn;
ALTER TABLE Tn ADD tnType VARCHAR(10) NOT NULL, CHANGE account_id customer INT DEFAULT NULL;
ALTER TABLE Tn ADD CONSTRAINT FK_3504C6F07D3656A4 FOREIGN KEY (account) REFERENCES Account (id);
ALTER TABLE Tn ADD CONSTRAINT FK_3504C6F081398E09 FOREIGN KEY (customer) REFERENCES Customer (id);
CREATE INDEX IDX_3504C6F07D3656A4 ON Tn (account);
CREATE INDEX IDX_3504C6F081398E09 ON Tn (customer);
ALTER TABLE Customer CHANGE guid guid VARCHAR(255) NOT NULL, CHANGE authGuid authGuid VARCHAR(255) NOT NULL
mah@debian:~/comcast$ php app/console doctrine:schema:update --force
Updating database schema...

[Doctrine\DBAL\DBALException]
An exception occurred while executing 'ALTER TABLE Tn ADD CONSTRAINT FK_3504C6F07D3656A4 FOREIGN KEY (account)
REFERENCES Account (id)':

SQLSTATE[42000]: Syntax error or access violation: 1072 Key column 'account' doesn't exist in table

[PDOException]
SQLSTATE[42000]: Syntax error or access violation: 1072 Key column 'account' doesn't exist in table

doctrine:schema:update [--complete] [--dump-sql] [--force] [--em[="..."]]

$ php app/console doctrine:schema:update --dump-sql
ALTER TABLE Account CHANGE guid guid VARCHAR(255) NOT NULL;
ALTER TABLE Tn ADD account INT DEFAULT NULL;
ALTER TABLE Tn ADD CONSTRAINT FK_3504C6F07D3656A4 FOREIGN KEY (account) REFERENCES Account (id);
ALTER TABLE Tn ADD CONSTRAINT FK_3504C6F081398E09 FOREIGN KEY (customer) REFERENCES Customer (id);
CREATE INDEX IDX_3504C6F07D3656A4 ON Tn (account);
CREATE INDEX IDX_3504C6F081398E09 ON Tn (customer);
ALTER TABLE Customer CHANGE guid guid VARCHAR(255) NOT NULL, CHANGE authGuid authGuid VARCHAR(255) NOT NULL

$ php app/console doctrine:schema:update --force
Updating database schema...
Database schema updated successfully! "7" queries were executed

$

hmm, the first update seems to miss the addition of the account field, which is done the second time through ALTER TABLE Tn ADD account INT DEFAULT NULL;