SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function has (children 1)
     ExpressionList (children 2)
      Function materialize (children 1)
       ExpressionList (children 1)
        Function CAST (children 1)
         ExpressionList (children 2)
          Literal Array_[\'2021-07-14\']
          Literal \'Array(LowCardinality(Nullable(DateTime)))\'
      Function materialize (children 1)
       ExpressionList (children 1)
        Literal NULL
