SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 2)
    Function hex (children 1)
     ExpressionList (children 1)
      Function groupArraySortedState (alias t) (children 2)
       ExpressionList (children 1)
        Function CAST (children 1)
         ExpressionList (children 2)
          Function if (children 1)
           ExpressionList (children 3)
            Function less (children 1)
             ExpressionList (children 2)
              Identifier number
              Literal UInt64_3
            Literal NULL
            Identifier number
          Literal \'Nullable(Decimal(3))\'
       ExpressionList (children 1)
        Literal UInt64_10
    Function toTypeName (children 1)
     ExpressionList (children 1)
      Identifier t
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Function numbers (children 1)
       ExpressionList (children 1)
        Literal UInt64_10
