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Implement batch_update and batch_merge for var and stddev operator #1546

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realno opened this issue Jan 11, 2022 · 0 comments · Fixed by #1547
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Implement batch_update and batch_merge for var and stddev operator #1546

realno opened this issue Jan 11, 2022 · 0 comments · Fixed by #1547
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enhancement New feature or request

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@realno
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realno commented Jan 11, 2022

Is your feature request related to a problem or challenge? Please describe what you are trying to do.

We need to change stddev and var to use batch method for more efficient calculation.

Describe the solution you'd like

Implement batch_update and batch_merge for stddev and var.

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Additional context
Please find the discussions in #1525
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Add batch operations to stddev realno/arrow-datafusion
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