[GitHub] [airflow] easontm commented on issue #19397: Upgrading from 2.1.2 to 2.2.1 airflow db upgrade errors

[GitBox <gi...@apache.org>]

easontm commented on issue #19397:
URL: https://github.com/apache/airflow/issues/19397#issuecomment-961720395


   I also received this error with the following mysql packages:
   ```
   apache-airflow-providers-mysql==2.1.1
   mysql-connector-python==8.0.26
   mysqlclient==2.0.3
   ```
   
   Error:
   ```
   sqlalchemy.exc.OperationalError: (MySQLdb._exceptions.OperationalError) (1093, "You can't specify target table 'task_instance' for update in FROM clause")
   [SQL: delete from task_instance
           where (task_id, dag_id, execution_date) IN (
               select source.task_id, source.dag_id, source.execution_date
               from task_instance as source
               left join dag_run as dr
               on (source.dag_id = dr.dag_id and source.execution_date = dr.execution_date)
               where dr.id is null
           )
       ]
   ```


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