我可以这样做来将列类型设置为唯一字符串:
uuid = Column(String, default=lambda: str(uuid.uuid4()), unique=True)
但我想生成random-unique-integer,而不是random-unique-string。
知道怎么做吗?
uuid.uuid4().int
谢谢。如果我可以重新指定 :) 是否有办法将其放入 DB Integer 类型。
最佳答案
from random import randint
def random_integer():
min_ = 100
max_ = 1000000000
rand = randint(min_, max_)
# possibility of same random number is very low.
# but if you want to make sure, here you can check id exists in database.
from sqlalchemy.orm import sessionmaker
db_session_maker = sessionmaker(bind=your_db_engine)
db_session = db_session_maker()
while db_session.query(Table).filter(uuid == rand).limit(1).first() is not None:
rand = randint(min_, max_)
return rand
class Table(Base):
uuid = Column(String, default=random_integer, unique=True)
关于python - SQL炼金术 : random Unique integer?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/38754816/