SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 2)
    Function equals (children 1)
     ExpressionList (children 2)
      Subquery (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 1)
         SelectQuery (children 1)
          ExpressionList (children 1)
           Subquery (children 1)
            SelectWithUnionQuery (children 1)
             ExpressionList (children 1)
              SelectQuery (children 1)
               ExpressionList (children 1)
                Subquery (children 1)
                 SelectWithUnionQuery (children 1)
                  ExpressionList (children 1)
                   SelectQuery (children 1)
                    ExpressionList (children 1)
                     Subquery (children 1)
                      SelectWithUnionQuery (children 1)
                       ExpressionList (children 1)
                        SelectQuery (children 1)
                         ExpressionList (children 1)
                          Subquery (children 1)
                           SelectWithUnionQuery (children 1)
                            ExpressionList (children 1)
                             SelectQuery (children 2)
                              ExpressionList (children 1)
                               Function count (children 1)
                                ExpressionList
                              TablesInSelectQuery (children 1)
                               TablesInSelectQueryElement (children 1)
                                TableExpression (children 1)
                                 Subquery (children 1)
                                  SelectWithUnionQuery (children 1)
                                   ExpressionList (children 1)
                                    SelectQuery (children 3)
                                     ExpressionList (children 1)
                                      Asterisk
                                     TablesInSelectQuery (children 1)
                                      TablesInSelectQueryElement (children 1)
                                       TableExpression (children 1)
                                        TableIdentifier system.numbers
                                     Literal UInt64_10
      Subquery (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 1)
         SelectQuery (children 1)
          ExpressionList (children 1)
           Literal UInt64_10
    Function arrayElement (children 1)
     ExpressionList (children 2)
      Function tupleElement (children 1)
       ExpressionList (children 2)
        Subquery (children 1)
         SelectWithUnionQuery (children 1)
          ExpressionList (children 1)
           SelectQuery (children 1)
            ExpressionList (children 3)
             Literal UInt64_1
             Literal \'Hello\'
             Literal Array_[UInt64_1, UInt64_2]
        Literal UInt64_3
      Literal UInt64_1