All we need is an easy explanation of the problem, so here it is.
In the below query:
SELECT user_id, (max(ts) - min(ts)) as tsdiff FROM analytics GROUP BY user_id
How can I filter on on
tsdiff which I assume is a
interval? For example I’d like to filter for all records where
tsdiff is larger than
1d (one day).
Even if I were to use a subquery, I’d face the same issue again.
How to solve :
I know you bored from this bug, So we are here to help you! Take a deep breath and look at the explanation of your problem. We have many solutions to this problem, But we recommend you to use the first method because it is tested & true method that will 100% work for you.
SELECT user_id ,(max(ts) - min(ts)) as tsdiff FROM analytics GROUP BY user_id HAVING max(ts) - min(ts) > interval '1 day'
Note: Use and implement method 1 because this method fully tested our system.
Thank you 🙂