dstandish opened a new pull request, #36566:
URL: https://github.com/apache/airflow/pull/36566

   Two changes here.
   
   First, previously we ended up with two joins to DagRun because the dag_run 
relationship attr is `lazy="joined"` and sqlalchemy was not using it.  By 
setting to be lazy, we eliminate the extra join and we also don't ask for any 
columns in dag run (previously the generated query asked for all of them, even 
though we try to limit via options further down).
   
   Second, we use inner join for queued by job.  The outer was only there to 
handle tasks in flight during upgrade to 2.0.
   


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