Laravel query - grouping results in a range of dates - php

Question

I have a table from which I'd like to pull a list of object_id that satisfy condition:
extended_data starts with "Text1" or "Text2",
time difference between records in table containing "Text1" and "Text2" for a given object_id is less than 2 seconds.
I'm sending code written so far and an example table with selected records that meet condition. As a result, the query for example should return [3, 7].
How should I expand code to get solution?
id
object_id
extended_data
timestamp
1
1
Text1 lorem
12.01.2023 11:01:22
2
2
Text2 lorem
12.01.2023 11:02:25
3
3
Text1 lorem
12.01.2023 11:03:04
4
3
Text2 lorem
12.01.2023 11:03:05
5
4
Lorem
12.01.2023 11:05:44
6
5
Text1 ipsum
12.01.2023 11:05:45
7
null
ipsum
12.01.2023 11:06:23
8
6
Text1 ipsum
12.01.2023 11:08:21
9
6
Text2 ipsum
12.01.2023 11:08:32
10
7
Text1 ipsum
12.01.2023 11:09:12
11
7
ipsum
12.01.2023 11:09:12
12
7
Text2 ipsum
12.01.2023 11:09:12
$logs = Logs::whereNotNull('object_id')->get();
$filtered = $logs->filter(function (Logs $log) {
return str_starts_with($log->extended_data, "Text1") || str_starts_with($log->extended_data, "Text2");
})->values();
foreach ($filtered as $index => $log) {
$unset = false;
$actualTimestamp = strtotime($log->timestamp);
if ($index > 0) {
$previousTimestamp = strtotime($filtered[$index - 1]->timestamp);
$differenceInSeconds = $actualTimestamp - $previousTimestamp;
if ($differenceInSeconds > 2) {
$unset = true;
}
}
if (count($filtered) - 1 > $index) {
$nextTimestamp = strtotime($filtered[$index + 1]->timestamp);
$differenceInSeconds = $nextTimestamp - $actualTimestamp;
if ($differenceInSeconds > 2) {
$unset = true;
}
}
if ($unset) {
$log->unset = true;
}
}
foreach ($filtered as $index => $log) {
if (isset($log->unset) && $log->unset) {
unset($filtered[$index]);
}
}

Answer 1

I have written this assuming that the timestamp column contains a valid datetime/timestamp (2023-01-12 11:01:22) and not the string format (12.01.2023 11:01:22) you have included in your sample data.
SELECT l1.object_id
FROM logs l1
JOIN logs l2
ON l1.object_id = l2.object_id
AND l2.extended_data LIKE 'Text2%'
AND l2.timestamp BETWEEN l1.timestamp AND l1.timestamp + INTERVAL 2 SECOND
WHERE l1.extended_data LIKE 'Text1%'
And, assuming the text of this query is static, to run it you can just do -
$logs = DB::select("
SELECT l1.object_id
FROM logs l1
JOIN logs l2
ON l1.object_id = l2.object_id
AND l2.extended_data LIKE 'Text2%'
AND l2.timestamp BETWEEN l1.timestamp AND l1.timestamp + INTERVAL 2 SECOND
WHERE l1.extended_data LIKE 'Text1%'
");
There would be no benefit in building up this query using Query Builder.