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I think that SQLAlchemy behaves incorrectly when there is a primary key
constraint on multiple columns and one of the columns is of type Integer.
##
from sqlalchemy import schema, types, create_engine
metadata = schema.MetaData()
test = schema.Table(
'test', metadata,
schema.Column('x', types.String, nullable=False),
schema.Column('y', types.Integer, nullable=False),
schema.PrimaryKeyConstraint('x', 'y')
)
engine = create_engine('postgresql://...', echo=True)
try:
metadata.create_all(engine)
finally:
metadata.drop_all(engine)
##
The generated TABLE statament is:
CREATE TABLE test (
x VARCHAR NOT NULL,
y SERIAL NOT NULL,
PRIMARY KEY (x, y)
)
In my opinion, autoincrement should be assumed to be true *only* when
there is one primary key of type Integer.
Manlio
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