feat(sql): add covariance and corr built-in functions #4012
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puzpuzpuz
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Nov 28, 2023
...main/java/io/questdb/griffin/engine/functions/groupby/AbstractRegressionGroupByFunction.java
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Closes #3826
Resolves questdb/roadmap#55
Model after Postgres:
covar_samp(),covar_pop(),corr()