输出是:
CREATE TABLE users (
id INTEGER NOT NULL,
name VARCHAR,
fullname VARCHAR,
PRIMARY KEY (id)
然后当我第二次运行时,输出更改:
2019-04-18 21:07:17,156 INFO sqlalchemy.engine.base.Engine PRAGMA table_info("users")
2019-04-18 21:07:17,157 INFO sqlalchemy.engine.base.Engine ()
2019-04-18 21:07:17,161 INFO sqlalchemy.engine.base.Engine PRAGMA table_info("addresses")
2019-04-18 21:07:17,166 INFO sqlalchemy.engine.base.Engine ()
为什么这里有变化?库恩有人为我解释吗?