This was not clear enough in Mike's post: `Foo.__table__` is the same type
of object as `_foo = table(...)`. SQLAlchemy ORM is built on top of
SQLAlchemy's Core, so the ORM's `.__table__` attribute is the Core's
`table()` object.
Since they're the same, the two will have the same performance within
`conn.execute(`.
On Wednesday, November 25, 2020 at 4:18:46 PM UTC-5 Kata Char wrote:
> I see, does that mean there is no difference in performance if one or the
> other is used? In other words
> from sqlalchemy.sql import table
>
> _foo = table(...)
> conn.execute(_foo.insert(), [{...}, ...])
>
> Would have the same performance as `conn.execute(Foo.__table__.insert(),
> [{...}, ...])`
>
> On Wednesday, November 25, 2020 at 8:27:53 AM UTC-8 Mike Bayer wrote:
>
>>
>>
>> On Wed, Nov 25, 2020, at 10:30 AM, Kata Char wrote:
>>
>> Hi, sorry if this post is a duplicate, my first one didn't seem to make
>> it.
>>
>> I was reading the documentation:
>> - https://docs.sqlalchemy.org/en/13/core/tutorial.html#execute-multiple
>>
>> -
>> https://docs.sqlalchemy.org/en/13/_modules/examples/performance/bulk_inserts.html
>>
>> Is there any difference between conn.execute(TableClause.insert(), [...])
>> vs conn.execute(Model.__table__.insert(), [...])?
>>
>> The first one is documented to use execumany(), but what about the second
>> one?
>>
>>
>> Any conn.execute() that passes a list of dictionaries as the second
>> argument, where there is more than one entry in the list, will use the
>> executemany() style with the DBAPI connection.
>>
>> With the ORM the Model.__table__ attribute is a Table object. That
>> tutorial seems to be referencing TableClause which is the base class for
>> Table, but all the examples there are using Table objects.
>>
>>
>>
>> --
>> SQLAlchemy -
>> The Python SQL Toolkit and Object Relational Mapper
>>
>> http://www.sqlalchemy.org/
>>
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--
SQLAlchemy -
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http://www.sqlalchemy.org/
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