Question

I have a table called posts where I have two fields called timestamp_added and timestamp_edited.

I want to order by the latest added or edited posts descending.

ORDER BY p.timestamp_added DESC, p.timestamp_edited DESC, does not give me what I need.

I would love something like:

ORDER BY IF p.timestamp_edited > 0 THEN p.timestamp_edited DESC ELSE p.timestamp_added DESC

How do I do this? I have tried to google this, but I have trouble finding what I need.

Answer 1

Is the timestamp_edited NULL when not set?

In that case you could do:

ORDER BY IFNULL(p.timestamp_edited, p.timestamp_added) DESC 

If it’s 0 when not set:

ORDER BY IF(p.timestamp_edited > 0, p.timestamp_edited, p.timestamp_added) DESC