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我有以下的模型,其中表A和表B有1對1的關係:SQLAlchemy的批量插入有一對一的關係
class TableA(db.Model):
id = Column(db.BigInteger, primary_key=True)
title = Column(String(1024))
table_b = relationship('TableB', uselist=False, back_populates="table_a")
class TableB(db.Model):
id = Column(BigInteger, ForeignKey(TableA.id), primary_key=True)
a = relationship('TableA', back_populates='table_b')
name = Column(String(1024))
當我插入1記錄一切順利:
rec_a = TableA(title='hello')
rec_b = TableB(a=rec_a, name='world')
db.session.add(rec_b)
db.session.commit()
但當我嘗試做大量的記錄:
bulk_ = []
for title, name in zip(titles, names):
rec_a = TableA(title=title)
bulk_.append(TableB(a=rec_a, name=name))
db.session.bulk_save_objects(bulk_)
db.session.commit()
我收到以下例外:
sqlalchemy.exc.InternalError: (pymysql.err.InternalError) (1364, "Field 'id' doesn't have a default value")
我做錯了什麼?我配置模型錯了嗎? 有沒有辦法批量提交這種類型的數據?