如何删除所有匹配的记录？

Question

I have the code like:

from sqlalchemy import func
d = func.date('2021-6-23')
session.query(XCom).filter(XCom.execution_date <= d).delete()

feedback is :

File "/home/airflow/.local/lib/python3.6/site-packages/sqlalchemy/orm/query.py", line 3926, in delete
delete_op.exec_()

I have tried:

session.query(XCom).filter(XCom.execution_date <= d).all()

it worked.

I cannot find out a reference for this. Any helps would be appreciated!

Answer 1

I found in sqlalchemy page

just add synchronize_session=False inside delete()

session.query(XCom).filter(XCom.execution_date <= d).delete(synchronize_session=False)