**** CubicPower OpenStack Study ****
def upgrade(migrate_engine):
meta = sqlalchemy.schema.MetaData()
meta.bind = migrate_engine
image_locations_table = sqlalchemy.Table('image_locations',
meta,
autoload=True)
meta_data = sqlalchemy.Column('meta_data',
schema.PickleType(),
default={})
meta_data.create(image_locations_table)
**** CubicPower OpenStack Study ****
def downgrade(migrate_engine):
meta = sqlalchemy.schema.MetaData()
meta.bind = migrate_engine
image_locations_table = sqlalchemy.Table('image_locations',
meta,
autoload=True)
image_locations_table.columns['meta_data'].drop()