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以下是我與工作模式:SQL鍊金術查詢過濾器語法不工作
class User(db.Model):
__tablename__ = 'user'
uid = db.Column(db.Integer, primary_key=True, index=True)
firstName = db.Column(db.String(100))
lastName = db.Column(db.String(100))
emailAddress = db.Column(db.String(120), unique=True, index=True)
pwHash = db.Column(db.String(256))
userLevel = db.Column(db.Integer())
userAccountType = db.Column(db.Integer())
isUserActive = db.Column(db.Boolean())
isUserLockedOut = db.Column(db.Boolean())
userLastLogin = db.Column(db.DateTime())
lastInvalidLogin = db.Column(db.DateTime())
userCreatedAt = db.Column(db.DateTime())
userConfirmedAt = db.Column(db.DateTime())
userUpdatedAt = db.Column(db.DateTime(), onupdate=datetime.datetime.now())
userAddress = db.relationship('Address', backref='user', lazy='dynamic')
userContactMethod = db.relationship('UserContactMethod', backref='user', lazy='dynamic')
userSensor = db.relationship('Sensor', backref='user', lazy='dynamic')
userReading = db.relationship('Reading', backref='user', lazy='dynamic')
deliveryEvents = db.relationship('logSMTPDeliveryEvents', backref='user', lazy='dynamic')
class Reading(db.Model):
__tablename__ = 'reading'
rid = db.Column(db.Integer, primary_key=True)
uid = db.Column(db.Integer, db.ForeignKey('user.uid'))
sid = db.Column(db.Integer, db.ForeignKey('sensor.sid'))
readingTimestamp = db.Column(db.DateTime())
readingLightValue = db.Column(db.Integer)
readingLightStatus = db.Column(db.String(6))
readingTemp1 = db.Column(db.Float)
readingTemp2 = db.Column(db.Float)
readingHumidity = db.Column(db.Float)
所以我的讀數表有用戶ID設置爲讀數表的外鍵。現在,當我嘗試發出像這樣的查詢:
queryResult = db.session.query(Reading).filter(Reading.uid == User.uid)
我得到所有的行,這是不正確的。我應該如何構建這個查詢?
謝謝! C