Thank you very much, your answer is very detailed as always. I think that
this approach may fit to me, because this tables are read-only, because it
is kind of datawarehouse.
Thanks!
суббота, 3 марта 2018 г., 10:45:45 UTC+3 пользователь Stanislav Lobanov
написал:
>
> Hello!
>
> I have a database with 10 tables with same structure. This structure of a
> tables are always the same.
>
> I want to be able to query this tables using one declarative mapper
> instead of 10 similar mappers, but to do so i need a way to change table
> name somehow.
>
> Desired code:
>
> class T(Base):
> some_column = Column(Integer) # just an example
>
> table_a_results =
> session.query(T).select_from_table('table_a').filter(T.some_column >
> 10).count()
> table_b_results =
> session.query(T).select_from_table('table_b').filter(T.some_column >
> 10).count()
>
>
> Are there any possibility to implement such query feature? Are there any
> alternative variants to this feature?
>
> Thanks!
>
--
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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