SNOW-2387227: Use session-scoped session.#3831
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…al column names (#3501)
Signed-off-by: sfc-gh-mvashishtha <mahesh.vashishtha@snowflake.com>
Signed-off-by: sfc-gh-mvashishtha <mahesh.vashishtha@snowflake.com> Co-authored-by: Jonathan Shi <149419494+sfc-gh-joshi@users.noreply.github.com>
…#3488) Co-authored-by: Jonathan Shi <149419494+sfc-gh-joshi@users.noreply.github.com> Co-authored-by: Hazem Elmeleegy <hazem.elmeleegy@snowflake.com>
…ndas methods (#3512) When AutoSwitchBackend (hybrid execution PrPr) is enabled, the client will automatically switch to the pandas backend when a method registered via a register_*_not_implemented annotation is called.
Co-authored-by: Jonathan Shi <149419494+sfc-gh-joshi@users.noreply.github.com>
Make `__len__()` an alias for `ngroups`. Signed-off-by: sfc-gh-mvashishtha <mahesh.vashishtha@snowflake.com>
…ctions ( part 1) (#3811) Co-authored-by: Jamison Rose <Jamison.Rose@snowflake.com>
…e-op switching for joins (#3818)
Add some changes that we need to support Modin 0.37.0: - add a Snowflake extension for `Series.to_json` that raises `NotImplementedError`. - `test_inplace_false_with_assignment_does_not_mutate_df` now passes - change some expectations relating to merges Signed-off-by: sfc-gh-mvashishtha <mahesh.vashishtha@snowflake.com> Co-authored-by: Jonathan Shi <jonathan.shi@snowflake.com>
…t. (#3820) To implement to_snowflake() for a Snowpark pandas dataframe on the pandas backend with large enough data, upload data via a parquet file instead of via a Snowpark dataframe. The Snowpark dataframe typically inserts values through parametrized SQL queries. Benchmarking showed that a good threshold to switch to parquet was roughly 3 MB, so I've set that as the configurable default switching threshold. Performance of this approach seems to improve with dataset size. Exporting an 800 MB dataframe took about 55 seconds via parquet versus about 429 seconds via the old method, so we get over 7x speedup. We can take a similar approach to speed up pandas_backend_df.move_to('snowflake'). Here are benchmark results with a 3XL warehouse: <img width="571" height="432" alt="to_snowflake_timing_2" src="https://github.com/user-attachments/assets/0f652f6e-4510-4a94-9a75-028f5e09f2b0" /> Signed-off-by: sfc-gh-mvashishtha <mahesh.vashishtha@snowflake.com> Co-authored-by: Jonathan Shi <149419494+sfc-gh-joshi@users.noreply.github.com>
Signed-off-by: sfc-gh-mvashishtha <mahesh.vashishtha@snowflake.com>
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