percious wrote:
> Here is the dump:
> ...<snip>...
> sqlalchemy.exceptions.SQLError: (OperationalError) (1071,
> 'Specified key was too long; max key length is 999 bytes')
> '\nCREATE TABLE `Album` (\n\tid INTEGER NOT NULL
> AUTO_INCREMENT, \n\tname VARCHAR(128), \n\tdirectory
> VARCHAR(512), \n\t`imageOrder` VARCHAR(512), \n\t`coverImage`
> INTEGER, \n\tPRIMARY KEY (id), \n\t UNIQUE (directory), \n\t
> FOREIGN KEY(`coverImage`) REFERENCES `Image` (id)\n)\n\n' ()
>
> Here is the table code:
> AlbumTable = Table('Album', metadata,
> Column('id', Integer, primary_key=True),
> Column('name', Unicode(128)),
> Column('directory', Unicode(512), unique=True),
> Column('imageOrder', Unicode(512)),
> Column('coverImage', Integer, ForeignKey('Image.id')),
> )
> Mysql version 5.0.27
>
> TIA
> -chris
I think this is because of your 'unique=True' on your Unicode directory
column. MySQL is building a unique index on that column, and the number
of bytes that it uses per character varies depending on the encoding. If
it is UTF-16, for example, it will use 2 bytes per character, so your
VARCHAR(512) column would be 1024 bytes, and as the error message says,
the max key length is 999 bytes. This is a MySQL problem, not
SQLAlchemy.
I don't know what the solution is - you may need to play with MySQL's
character encoding.
See for example things like:
http://www.xaprb.com/blog/2006/04/17/max-key-length-in-mysql/
Hope that helps,
Simon
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