SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 1)
    WithElement (children 1)
     Subquery (children 1)
      SelectWithUnionQuery (children 1)
       ExpressionList (children 1)
        SelectQuery (children 3)
         ExpressionList (children 2)
          Identifier n
          Literal NULL (alias b)
         TablesInSelectQuery (children 1)
          TablesInSelectQueryElement (children 1)
           TableExpression (children 1)
            TableIdentifier with_test
         Function or (children 1)
          ExpressionList (children 2)
           Function isNull (children 1)
            ExpressionList (children 1)
             Identifier b
           Function equals (children 1)
            ExpressionList (children 2)
             Literal UInt64_1
             Literal UInt64_1
   ExpressionList (children 1)
    Function max (children 1)
     ExpressionList (children 1)
      Identifier n
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier test1
   Function equals (children 1)
    ExpressionList (children 2)
     Identifier n
     Literal UInt64_45
