SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Function toDateTime (alias ts) (children 1)
     ExpressionList (children 2)
      Function fromUnixTimestamp64Micro (children 1)
       ExpressionList (children 1)
        Function toInt64 (children 1)
         ExpressionList (children 1)
          Literal UInt64_0
      Literal \'UTC\'
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Function numbers_mt (children 1)
       ExpressionList (children 1)
        Literal UInt64_2
   Function equals (children 1)
    ExpressionList (children 2)
     Function plus (children 1)
      ExpressionList (children 2)
       Identifier ts
       Literal UInt64_1
     Identifier ts