fixup! Restore external_trigger value when downgrade

Author: jason810496

airflow/migrations/versions/0059_3_0_0_remove_external_trigger_field.py

@@ -47,3 +47,12 @@ def downgrade():
     """Unapply remove external_trigger field."""
     with op.batch_alter_table("dag_run", schema=None) as batch_op:
         batch_op.add_column(sa.Column("external_trigger", sa.BOOLEAN(), autoincrement=False, nullable=True))
+    # restore external_trigger field based on run_type
+    dag_run_table = sa.table(
+        "dag_run", sa.column("external_trigger", sa.BOOLEAN()), sa.column("run_type", sa.String())
+    )
+    op.execute(
+        dag_run_table.update().values(
+            external_trigger=sa.case([(dag_run_table.c.run_type == "manual", True)], else_=False)
+        )
+    )

docs/apache-airflow/img/airflow_erd.sha256

@@ -1 +1 @@
-79e5ecaacfd5de52192ca2e28a8586c5fc246c4a6b276930ae149022f5f6d03f
+7926c50f5d7526588adbd8017d50097392511315ec78f5a64301dbbf4b166de3