Aggregate functions in WHERE clause in SQLite

Question

Simply put, I have a table with, among other things, a column for timestamps. I want to get the row with the most recent (i.e. greatest value) timestamp. Currently I\'m doing th

Answer 1

I think I've answered this question 5 times in the past week now, but I'm too tired to find a link to one of those right now, so here it is again...

SELECT
     *
FROM
     table T1
LEFT OUTER JOIN table T2 ON
     T2.timestamp > T1.timestamp
WHERE
     T2.timestamp IS NULL

You're basically looking for the row where no other row matches that is later than it.

NOTE: As pointed out in the comments, this method will not perform as well in this kind of situation. It will usually work better (for SQL Server at least) in situations where you want the last row for each customer (as an example).