如何使用sqlachemy更新mysql表中的列？

以下是我尝试过的所有不同的事情：

1. 2. 3. 4.

---

它们都不会抛出任何错误，但trackingId列不会使用值进行更新。

在我调用execute之后，第二个列的一个小变化就起作用了

stmt = sqlalchemy.update(Table1).\
            values(trackingId = 'UPSTXNID1').\
            where(Table1.id == '12345')
db.engine.execute(stmt)

# If you want to see the underlying SQL statement that is created
print str(stmt.compile(dialect=sqlalchemy.dialects.mysql.dialect()))

sqlalchemy.update(Table1)\
    .values({Table1.trackingId: 'UPSTXNID1'})\
    .where(Table1.id == '12345)

session.query(Table1)\
        .filter(Table1.id == '12345')\
        .update({Table1.trackingId: 'UPSTXNID1'})
session.commit()

db.engine.execute(
   "UPDATE Table1 SET trackingId=:trackingId WHERE id=:id",
   {'id': '12345', 'trackingId': 'UPSTXNID1'}
)

stmt = sqlalchemy.update(Table1).\
            values(trackingId = 'UPSTXNID1').\
            where(Table1.id == '12345')
db.engine.execute(stmt)

# If you want to see the underlying SQL statement that is created
print str(stmt.compile(dialect=sqlalchemy.dialects.mysql.dialect()))