SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function equals (children 1)
     ExpressionList (children 2)
      Function parseDateTime64OrZero (children 1)
       ExpressionList (children 2)
        Literal \'2021-01-04 23:12:34.11811235\'
        Literal \'%Y-%m-%d %H:%i:%s.%f\'
      Function toDateTime64 (children 1)
       ExpressionList (children 2)
        Literal \'1970-01-01 00:00:00\'
        Literal UInt64_6
