Formatted local time in a virtual generated column of SQLite - sqlite

Question

I want to store date in milliseconds, but also I want to see the formatted representation of it.
In order to not waste the drive space it makes sense to use a virtual generated column for this.
I wrote it:
DROP TABLE IF EXISTS example;
CREATE TABLE IF NOT EXISTS example (
time INTEGER,
formatted_time GENERATED ALWAYS AS (strftime('%Y.%m.%d %H:%m', time/1000, 'unixepoch')) VIRTUAL
);
INSERT INTO example (time) VALUES (1605960000000);
INSERT INTO example (time) VALUES (1615413202000);
It works, but I can't set the second modifier of strftime(format,timestring,modifier,modifier...) to get the local time. (It returns UTC time by default.)
When I use:
formatted_time GENERATED ALWAYS AS (strftime('%Y.%m.%d %H:%m', time/1000, 'unixepoch', 'localtime')) VIRTUAL
It throws Result: non-deterministic use of strftime() in a generated column when I insert a data.
While it works as expected:
select strftime('%Y.%m.%d %H:%m', 1615413202000/1000, 'unixepoch', 'localtime');
How to create a virtual column with formatted local time?

Answer 1

It's not possible.
Based on this answers:
Creating generate column based on today's date in SQLite
Computed column 'Month' in table cannot be persisted because the column is non-deterministic
SQLite requires to the value of a generated column would be the same on any machine in any time zone (be deterministic). Even for a virtual generated column.
In my case for time value 1615413202000 the formatted_time would be different for the same table opened in different time zones, so the the table would be "non-deterministic".
As a workaround it possible to create a view:
CREATE VIEW example_view AS
SELECT time, strftime('%Y.%m.%d %H:%m', time/1000, 'unixepoch', 'localtime') as formatted_time_local
FROM example;
(based on Shawn's answer)