SQLAlchemy:查找数组列之间的差异

from sqlalchemy import create_engine, select, func
from sqlalchemy.orm import sessionmaker
from sqlalchemy.ext.declarative import declarative_base

engine = create_engine('数据库连接字符串')
Session = sessionmaker(bind=engine)
session = Session()

Base = declarative_base()

class MyTable(Base):
    __tablename__ = 'my_table'
    id = Column(Integer, primary_key=True)
    array_column = Column(ARRAY(Integer))

diff_query = session.query(MyTable.array_column).distinct().\
    filter(MyTable.array_column != None).\
    group_by(MyTable.array_column).\
    having(func.count(MyTable.array_column) > 1)

diff_results = diff_query.all()

for result in diff_results:
    print(result.array_column)