dilipbiswal commented on a change in pull request #24209: [SPARK-27255][SQL]
Aggregate functions should not be allowed in WHERE
URL: https://github.com/apache/spark/pull/24209#discussion_r270036188
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/CheckAnalysis.scala
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@@ -172,13 +172,17 @@ trait CheckAnalysis extends PredicateHelper {
failAnalysis("Null-aware predicate sub-queries cannot be used in
nested " +
s"conditions: $condition")
+ case f @ Filter(condition, _) if
PlanHelper.specialExpressionInUnsupportedOperator(f) =>
Review comment:
@cloud-fan I thought, having a targeted error message for the user would be
better. If we do it generically, we would say "Filter" instead of "WHERE
clause", right ? Should i have it handled for Filter and have a general catcher
as the last case statement to issue a generic error message ?
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