SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Function arrayAUCPR (children 1)
     ExpressionList (children 3)
      Identifier x
      Identifier y
      Identifier z
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Subquery (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 2)
         SelectQuery (children 1)
          ExpressionList (children 3)
           Literal Array_[UInt64_1] (alias x)
           Literal Array_[UInt64_0] (alias y)
           Literal Array_[UInt64_0, UInt64_0] (alias z)
         SelectQuery (children 1)
          ExpressionList (children 3)
           Literal Array_[UInt64_1] (alias x)
           Literal Array_[UInt64_1] (alias y)
           Literal Array_[UInt64_0, UInt64_0, UInt64_0, UInt64_0] (alias z)
