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read_snowflake casts string columns to objects #63

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phofl opened this issue Jul 23, 2024 · 0 comments
Open

read_snowflake casts string columns to objects #63

phofl opened this issue Jul 23, 2024 · 0 comments

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@phofl
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phofl commented Jul 23, 2024

the snowflake reader casts string columns in the to_pandas call to object, which is bad for memory, Gil contention and performance. We should utilise the same strategy as for read_parquet over in dask to preserve the string dtype when the option is set.
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