SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Function toTime (alias a) (children 1)
     ExpressionList (children 1)
      Function toDateTime (children 1)
       ExpressionList (children 1)
        Literal UInt64_12
   ExpressionList (children 2)
    Function toTypeName (children 1)
     ExpressionList (children 1)
      Identifier a
    Identifier a
