zhiqiang-hhhh commented on code in PR #39187:
URL: https://github.com/apache/doris/pull/39187#discussion_r1797617518
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be/src/vec/aggregate_functions/aggregate_function_regr_union.h:
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@@ -97,6 +103,42 @@ struct AggregateFunctionRegrData {
Float64 slope = (count * sum_of_x_mul_y - sum_x * sum_y) / denominator;
return slope;
}
+
+ Float64 get_regr_sxx_result() const {
+ Float64 result = sum_of_x_squared - (sum_x * sum_x) / count;
Review Comment:
what if count is zero
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