CROSS APPLY function in Presto/AWS - sql-server

Question

I'm trying to convert 4 date columns titled Created, Approved, Processed & Realized to a single column with all 4 dates AND a second column with the status of each of those dates.
The image at the end shows the data issue visually (apologies I'm still figuring out how to attach tables in textual form on stackoverflow)
To solve this, I successfully executed the CROSS APPLY
function in SQL server (see below), but I now need to do the same in AWS Simba
Athena or the Presto language. Can someone please guide me on what is the AWS/Presto equivalent of a CROSS APPLY function? Thank you in advance
SELECT
V.Date,
V.Status
From Table C
CROSS APPLY
(VALUES
(C.Created, 'Opened'),
(C.Approved, 'Approved'),
(C.Processed, 'Processed'),
(C.Realized, 'Realized')
) AS V([Date], Status)
I want to convert the following table:

Answer 1

You should be able to use UNNEST for this:
SELECT v.date, v.status
FROM m_table
CROSS JOIN UNNEST(ARRAY[
ROW(C.Created, 'Opened'),
ROW(C.Approved, 'Approved'),
ROW(C.Processed, 'Processed'),
ROW(C.Realized, 'Realized')
]) AS v(date, status);
This works in the latest Presto version, 337.
In Athena you probably still cannot UNNEST array or ROW
in ANSI SQL manner, so you may need some modifications.