Complex procedure to adjust data continously - oracle

Question

I solved this in SQL Server with a trigger. Now I face it on Oracle.
I have a big set of data that periodically increases with new items.
The item has these fundamental columns:
ID string identifier (not null)
DATETIME (not null)
optional (eventually null, always null for type 1) DATETIME_EMIS emission datetame equal to the DATETIME of the corresponding emission item
type (0 or 1)
value (only if type 1)
It is basically a logbook.
For example: An item with ID='FIREALARM' and datetime='2023-02-12 12:02' has closing like this:
ID='FIREALARM' in datetime='2023-02-12 15:11', emission datetime='2023-02-12 12:02' (equal to the emission item).
What I need is to obtain a final item in the destination table like this:
ID='FIREALARM' in DATETIME_BEGIN ='2023-02-12 12:02', DATETIME_END ='2023-02-12 15:11'
Not all the items have the closing datetime (the ones of Type=1 instead 0), in this case the next item should be use to close the previous one (with the problem of finding it). For example:
Item1:
ID='DEVICESTATUS', datetime='2023-02-12 22:11', Value='Broken' ;
Item2:
ID='DEVICESTATUS', datetime='2023-02-12 22:14', Value='Running'
Should result in
ID='DEVICESTATUS', DATETIME_BEGIN ='2023-02-12 22:11',DATETIME_END ='2023-02-12 22:14', Value='Broken'
The final data should be extracted by a select query as faster as possible.
The process of the elaboration should be independent from the order of inserting.
In SQL Server, I created a trigger with several operations which involve a temporary table, some queries on the inserted set and the entire destination table, so a complex procedure that is not worth to be shown to understand the problem.
Now I discovered that Oracle has some limitations and is not easy to port the trigger on it. For example is not easy to use a temporary table in the same way, and the operation are for each row.
I am asking what could be a good strategy in Oracle to elaborate the data in the final form considering that the set increase continuously and the open and the closure items must be reduce to a single item. I am not asking for a solution of the problem, I am trying to understand what could be the instrument in Oracle useful to achieve a complex elaboration like this. Thanks.

Answer 1

From Oracle 12, you can use MATCH_RECOGNIZE to perform row-by-row pattern matching:
SELECT *
FROM destination
MATCH_RECOGNIZE(
PARTITION BY id
ORDER BY datetime
MEASURES
FIRST(datetime) AS datetime_begin,
LAST(datetime) AS datetime_end,
FIRST(value) AS value
PATTERN ( ^ any_row+ $ )
DEFINE
any_row AS 1 = 1
)
Which, for the sample data:
CREATE TABLE destination (id, datetime, value) AS
SELECT 'DEVICESTATUS', DATE '2023-02-12' + INTERVAL '22:11' HOUR TO MINUTE, 'Broken' FROM DUAL UNION ALL
SELECT 'DEVICESTATUS', DATE '2023-02-12' + INTERVAL '22:14' HOUR TO MINUTE, 'Running' FROM DUAL;
Outputs:
ID
DATETIME_BEGIN
DATETIME_END
VALUE
DEVICESTATUS
2023-02-12 22:11:00
2023-02-12 22:14:00
Broken
fiddle