SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function transform (children 1)
     ExpressionList (children 4)
      Function arrayJoin (children 1)
       ExpressionList (children 1)
        Literal Array_[\'c\', \'b\', \'a\']
      Literal Array_[\'a\', \'b\']
      Function array (children 1)
       ExpressionList (children 2)
        Function toDateTime64 (children 1)
         ExpressionList (children 2)
          Literal \'2023-01-01\'
          Literal UInt64_3
        Function toDateTime64 (children 1)
         ExpressionList (children 2)
          Literal \'2023-02-02\'
          Literal UInt64_3
      Function toDateTime64 (children 1)
       ExpressionList (children 2)
        Literal \'2023-03-03\'
        Literal UInt64_3
