SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 2)
    Function parseDateTime32BestEffortOrNull (alias a) (children 1)
     ExpressionList (children 2)
      Literal \'1640649600123\'
      Literal \'UTC\'
    Function toTypeName (children 1)
     ExpressionList (children 1)
      Identifier a
