I have a Journeys table. One of the columns on this table is EventType
that holds an integer.
EventType
can only ever be 1, 2 or 3.
How can I make a selection that has the logic:
Find a record with
EventType
= 3 and then select all records before it until you get to a record withEventType
= 1 .
Basically, this table collects GPS data ( Latitude and Longitude ) for a journey.
EventType = 1 means Start of Journey
EventType = 2 means Everything between the Start and End of a Journey
EventType = 3 means End of Journey
The table Schema is:
MySQL isn't very good (I can do simple Select statements ...etc) but just couldn't think of a way for attempting this.
I would think you could do something like this:
SELECT *
FROM your_table
WHERE id > (SELECT MIN(id)
FROM your_table
WHERE EventType = 1)
AND id < (SELECT MAX(id)
FROM your_table
WHERE EventType =3)
This may not be the most elegant solution, but from what I tried, it worked.
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