SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Function arrayMap (alias q) (children 1)
     ExpressionList (children 2)
      Function lambda (children 1)
       ExpressionList (children 2)
        Function tuple (children 1)
         ExpressionList (children 1)
          Identifier y
        Function round (children 1)
         ExpressionList (children 2)
          Identifier y
          Literal UInt64_1
      Function quantilesExactInclusive (children 2)
       ExpressionList (children 1)
        Identifier x
       ExpressionList (children 2)
        Literal Float64_0.1
        Literal Float64_0.9
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Subquery (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 1)
         SelectQuery (children 1)
          ExpressionList (children 1)
           Function arrayJoin (alias x) (children 1)
            ExpressionList (children 1)
             Literal Array_[Int64_-2147483648, UInt64_1, UInt64_2]