MySQL locate first and last event per day - mysql

Question

I have a string of events being logged on a 5 minute basis throughout the day in a MySQL DB. I need to identify the first event (where logid > 0) of the day as well as the last (where logid=0), but struggling to find a simple SQL solution.
A 0 will be stored in the logid field in every row starting at midnight until the first event is triggered, at which point it will change to a number > 0. Then various events will be triggered logging a number > 0 for the remainder of the day, at which point the field will once again be logged as 0 until midnight, when the process starts over again.
Is there a quick and simple way to pull the rows identifying the time when the events start, and another result showing when the events end?
CREATE TABLE logs(
id INT AUTO_INCREMENT,
date DATETIME,
logid INT,
PRIMARY KEY (id)
) ENGINE=INNODB;
This is the test data:
id date logid
1 2018-11-12 01:05:00 0
2 2018-11-12 01:10:00 0
3 2018-11-12 01:15:00 0
4 2018-11-12 01:20:00 0
5 2018-11-12 01:05:00 0
…
84 2018-11-12 06:35:00 0
85 2018-11-12 06:35:00 1
86 2018-11-12 06:40:00 1
87 2018-11-12 06:45:00 1
88 2018-11-12 06:50:00 1
…
164 2018-11-12 15:20:00 1
165 2018-11-12 15:25:00 0
166 2018-11-12 15:30:00 0
167 2018-11-12 15:35:00 0
Desired Result set:
85 2018-11-12 06:35:00 1
165 2018-11-12 15:25:00 0
I'm not concerned about logid up until the first instance where it is greater than 0. But I need to identify the first instance where logid > 0, and then the next chronological instance where logid = 0 again.
My primary attempt was to group and order on the date and logid (edit: failed attempt removed for clarity)
Here's my latest attempt
(SELECT *
FROM logs
WHERE logid>0
GROUP BY date
ORDER BY date
limit 1
)UNION ALL(
SELECT *
FROM logs
WHERE logid>0
GROUP BY date
ORDER BY date DESC
limit 1)
Getting closer, but not quite there. This gives me the correct first row where logid = 1, but it gives me the last row where logid = 1 (id 164) rather than the following row where logid = 0 (id=165).
Is it possible to select the penultimate row of a set if I change limit 1 to 2?
Any other pointers to keep me moving forward?

Answer 1

This question doesn't seem to be a problem for others, but I thought I would post the answer I came up with in case anyone runs into a similar situation in the future.
SET #v1 := (SELECT date
FROM logs
WHERE logid > 0
GROUP BY date
ORDER BY date
limit 1);
(SELECT *
FROM logs
WHERE date>#v1 and logid>0
GROUP BY date
ORDER BY date
limit 1
) UNION ALL (
SELECT *
FROM logs
WHERE date>#v1 and logid=0
GROUP BY date
ORDER BY date
limit 1
)