Github user hvanhovell commented on a diff in the pull request:

    https://github.com/apache/spark/pull/15763#discussion_r87814868
  
    --- Diff: 
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/Analyzer.scala
 ---
    @@ -1069,11 +1110,19 @@ class Analyzer(
             case a @ Aggregate(grouping, expressions, child) =>
               failOnOuterReference(a)
               val referencesToAdd = missingReferences(a)
    +          if (foundNonEqualCorrelatedPred) {
    +            failOnNonEqualCorrelatedPredicate(a)
    +          }
               if (referencesToAdd.nonEmpty) {
                 Aggregate(grouping ++ referencesToAdd, expressions ++ 
referencesToAdd, child)
               } else {
                 a
               }
    +        case w : Window =>
    +          if (foundNonEqualCorrelatedPred) {
    +            failOnNonEqualCorrelatedPredicate(w)
    +          }
    +          w
    --- End diff --
    
    Should we rewrite the aggregates in the window function? For example:
    ```sql
    select *
    from  tbl_x
    where value in (select max() over() from tbl_y where tbl_y.id = tbl_x.id)
    ```
    Should we rewrite `max() over()` into `max() over(partition by tbl_y.id)`?


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