srowen commented on code in PR #37137: URL: https://github.com/apache/spark/pull/37137#discussion_r916811045
########## sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/aggregate/linearRegression.scala: ########## @@ -278,7 +278,8 @@ case class RegrSlope(left: Expression, right: Expression) extends DeclarativeAgg covarPop.mergeExpressions ++ varPop.mergeExpressions override lazy val evaluateExpression: Expression = { - If(covarPop.n === 0.0, Literal.create(null, DoubleType), covarPop.ck / varPop.m2) + If(Or(covarPop.n === 0.0, varPop.m2 === 0.0), Review Comment: I think we need to remove the check on covarPop - it's fine if that is 0, the slope is just 0. I think it was a typo and was meant to be only varPop.m2 checked for 0 -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org