How to perform a left join in SQLALchemy?

Question

I have a SQL query which perfroms a series of left joins on a few tables:

SELECT

FROM table1 t1
INNER JOIN table2 t2
      ON attr =          


        

Answer 1

Here is how to use isouter:

select_from(db.join(Table1, Table2, isouter=True).join(Table3, isouter=True))