On 05/03/2013 04:18 PM, Simon King wrote:
On Thu, May 2, 2013 at 11:43 PM, Paradox <para...@pobox.com> wrote:
CREATE TABLE user (lname string, fname string, email string,
unique(lname, fname) ON CONFLICT REPLACE);
This will allow me to add multiple rows with the same lname as long as
the fnames are different for each. Is there a way to define such unique
constraints in SqlAlchemy?
You need to put your UniqueConstraint in the __table_args__ class
attribute for SQLAlchemy to see it, something like this:
class User(Base):
__tablename__ = 'user'
__table_args__ = (
UniqueConstraint('lname', 'fname', name='full_name'),
)
See the examples at
http://docs.sqlalchemy.org/en/rel_0_8/orm/extensions/declarative.html#table-configuration.
Note that __table_args__ here is a 1-element tuple - the comma on the
end of the line is important.
Hope that helps,
Simon
Simon,
Thanks so much, that fixed it. I appreciate the links too, I was
following the below and it hadn't occurred to me that it was a different
situation (i.e. defining the table using MetaData rather than using the
class definition).
http://docs.sqlalchemy.org/en/rel_0_8/core/schema.html?highlight=uniqueconstraint#sqlalchemy.schema.UniqueConstraint
thomas
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