Thanks Mike! You are the man!
On Wednesday, 3 June 2020 00:12:19 UTC+2, Mike Bayer wrote:
>
> 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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