yes, for example with select():
s1 = select([t.c.c1, t.c.c2, t.c.c3])
s2 = select([t2.c.c1, t.c.c2, null().label('col4'), null.label('col5')])
u1 = union(s1, s2)
I'd recommend using union() and select() to create these queries. the ORM
Query.union() method is not as easy to use and long term the above technique
with union() and select() will be how it's done.
On Tue, Jun 2, 2020, at 2:09 PM, Justvuur wrote:
> Hi All,
>
> I would like to do a union between 3 or 4 tables using the all powerful
> sqlalchemy. The tables have about 3 columns that are the same but each table
> has 2 different columns.
>
> Is it possible to do a query as below in sqlalchemy?
>
> Select Col1, Col2, Col3, Col4, Col5 from Table1
> Union
> Select Col1, Col2, Col3, Null as Col4, Null as Col5 from Table2
>
>
>
> --
> SQLAlchemy -
> The Python SQL Toolkit and Object Relational Mapper
>
> http://www.sqlalchemy.org/
>
> To post example code, please provide an MCVE: Minimal, Complete, and
> Verifiable Example. See http://stackoverflow.com/help/mcve for a full
> description.
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--
SQLAlchemy -
The Python SQL Toolkit and Object Relational Mapper
http://www.sqlalchemy.org/
To post example code, please provide an MCVE: Minimal, Complete, and Verifiable
Example. See http://stackoverflow.com/help/mcve for a full description.
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