[Bug] Fix the loss of precision when Decimal calculates variance/stddev#4959

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morningman merged 1 commit intoapache:masterfrom

xinyiZzz:decimal_variance_stddev_cast_double

Dec 6, 2020

Commits on Dec 1, 2020

Fixed issue #3127: Support Decimal to calculate variance and standard deviation, and use DecimalValue to store intermediate results
Xinyi Zou
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