…ve to separate module (#642)

* refactor: split `read_gbq_table` implementation into functions and move to separate module

add todos

* refactor progress

* add index_cols function

* maybe ready for review

* Update bigframes/session/__init__.py

…uery.array_length` function (#630)

* feat: creats bigquery namespace and adds bigquery.array_length function

* add docs

* minor fix

* fixing docs

* add more doc tests

* sentence-case

* TODO for null arrays

---------

Co-authored-by: Tim Sweña (Swast) <[email protected]>

Thank you for opening a Pull Request! Before submitting your PR, there are a few things you can do to make sure it goes smoothly:
- [ ] Make sure to open an issue as a [bug/issue](https://togithub.com/googleapis/python-bigquery-dataframes/issues/new/choose) before writing your code!  That way we can discuss the change, evaluate designs, and agree on the general idea
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Fixes internal #333480290 🦕

This avoids some warnings we see and ignore in our tests.

It might also address some flakiness in
`tests/system/small/ml/test_llm.py::test_create_text_generator_model`
and
`tests/system/small/ml/test_llm.py::test_create_text_generator_32k_model`,
but the root cause of that flakiness is still TBD.

This is to avoid running into conflict with the global session which may
have different options (e.g. location, connection etc.) set.

)

… functionality (#585)

* create_single_timeseries_forecasting_model_test.py code sample

* fix: forecast method to forecast time series

* pair programming PR draft creation

* feature: insoect coefficients

* update tests for new feature

* add arima_model.coef_ to fetch coefficients

* updated tests for coefficients feature

* feature update for arima_coefficients

* updates to output cols

* docstring updates

---------

Co-authored-by: Salem Boyland <[email protected]>
Co-authored-by: Tim Sweña (Swast) <[email protected]>

…ioned tables with no `index_col` or `filters` set (#631)

This should help customers better discover the best practices for working with large tables.

feat: support `index_col=False` in `read_csv` and `engine="bigquery"`

…ns (#553)

- temporary tables will have the session id in their names
- session.close() will delete temporary tables that were created using the session.
- add pandas.get_default_session_id()
- add manual_cleanup_by_session_id(session_id: str). this is slow but allows users to clean up if they lost the session object

* feat: support gcf max instance count in `remote_function`

* fix comment in test

* enable back the retry annotation

* feat: Custom query labels for compute options

* Update docstring

* Update test

* Code example update.

* ignore type

* update format

…ead-local variables to prevent context managers in separate threads from affecting each other (#652)

* feat: `bigframes.options` and  `bigframes.option_context` now uses thread-local variables
to prevent context managers in separate threads from affecting each other

In our tests, this allows us to actually test things like
`bf.option_context("display.repr_mode", "deferred"):` without always
having some other test change the display mode and break the test.

Fixes internal issue 308657813

* catch close errors on thread-local session too
* use presence of _local.bigquery_options to indicate thread locality

feat: always do a query dry run when `option.repr_mode == "deferred"` (#652)

)

* docs: add python code sample to multiple timeseries forecasting

---------

Co-authored-by: Tim Sweña (Swast) <[email protected]>

Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>