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Move Covariance (Population) covar_pop to be a User Defined Aggregate Function
Which issue does this PR close?
Closes #10389 .
Rationale for this change
What changes are included in this PR?
Are these changes tested?
Are there any user-facing changes?
I agree once we port over the tests this PR should be good to go 🙏
Would you prefer moving test in a separate PR or in this PR? I'm good either way. :)
I agree once we port over the tests this PR should be good to go 🙏
Would you prefer moving test in a separate PR or in this PR? I'm good either way. :)
If the test can be verified one by one less than 5min, than it is fine for me to see them in one PR.
Thanks @yyy1000 and @jayzhan211