guan404ming commented on code in PR #54820:
URL: https://github.com/apache/airflow/pull/54820#discussion_r2294037534
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airflow-core/src/airflow/models/dagwarning.py:
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@@ -47,6 +48,8 @@ class DagWarning(Base):
message = Column(Text, nullable=False)
timestamp = Column(UtcDateTime, nullable=False, default=timezone.utcnow)
+ dag = relationship("DagModel", viewonly=True, lazy="selectin")
Review Comment:
> May I ask if there is any particular reason for using lazy="selectin"
instead of primaryjoin in this case?
lazy="selectin" is better for this simple foreign key relationship.
SQLAlchemy can automatically determine the join condition, making the code
cleaner and more maintainable. primaryjoin could be used for complex custom
conditions that SQLAlchemy can't infer automatically. So I think I could take a
look for previous alias pr and refactor them to maintain consistent and adopt
better implementation.
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