this is a documented limitation: http://docs.sqlalchemy.org/en/rel_0_9/core/dml.html?highlight=from_select#sqlalchemy.sql.expression.Insert.from_select
Note A SELECT..INSERT construct in SQL has no VALUES clause. Therefore Column objects which utilize Python-side defaults (e.g. as described at metadata_defaults_toplevel) will not take effect when using Insert.from_select(). use a server-side default instead. On Oct 10, 2014, at 5:12 AM, gbr <[email protected]> wrote: > Given this example, I would expect that in both cases the default value of > user.admin gets set. > > from sqlalchemy import * > from sqlalchemy.ext.declarative import declarative_base > from sqlalchemy.orm import sessionmaker, scoped_session > > engine = create_engine('sqlite:///:memory:', echo=True) > Base = declarative_base(bind=engine) > Session = scoped_session(sessionmaker(engine)) > > metadata = Base.metadata > > user = Table('user', metadata, > Column('id', Integer), > Column('name', String), > Column('admin', Boolean, default=False) > ) > > metadata.create_all() > > print insert(user).values({'id': 1, 'name': 'Max'}) > > # this is a contrived example, but it demonstrates the problem > print insert(user).from_select([user.c.id, user.c.name], select([user.c.id, > user.c.name]).where(user.c.name=='Max')) > > > The first insert() gets resolved to > > INSERT INTO user (id, name, admin) VALUES (?, ?, ?) > > which is fine, but the second intert().from_select() does not gets admin set. > > INSERT INTO user (id, name) SELECT user.id, user.name FROM user WHERE > > user.name = ? > > > > -- > You received this message because you are subscribed to the Google Groups > "sqlalchemy" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at http://groups.google.com/group/sqlalchemy. > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/sqlalchemy. For more options, visit https://groups.google.com/d/optout.
