String() needs a length with Oracle, MySQL, and several others.

On Feb 9, 2011, at 10:39 AM, Eduardo wrote:

> Hi,
> I want to create the following table:
> 
> Table('Error', metadata,
>        Column('Type', String),
>        Column('reference', String),
>        Column('context', String),
>        Column ('Timestamp', DateTime, primary_key=True),)
> 
> with the oracle DB. I receive this:
> 
> sqlalchemy.exc.Error: (DatabaseError) ORA-00910: specified length too
> long for its datatype
> '\nCREATE TABLE "Error" (\n\t"Type" VARCHAR(None CHAR), \n
> \t"reference" VARCHAR(None CHAR), \n\t"context" VARCHAR(None CHAR), \n
> \t"Timestamp" DATE\n)\n\n' {}
> 
> I tried it with the postgres it works.
> Is there any configuration option that makes the oracle accept this
> table without changing the given data types?
> Thanks
> 
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