SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Function runningAccumulate (children 1)
     ExpressionList (children 1)
      Identifier string_state
   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 argMaxState (alias string_state) (children 1)
            ExpressionList (children 2)
             Function repeat (children 1)
              ExpressionList (children 2)
               Literal \'a\'
               Literal UInt64_48
             Literal UInt64_1