Sam Saffron 81a1bafe54 PERF: Speed up home page unread+new query
restructure query so it avoids ORs

It appears postgres is picking suboptimal indexes if too many ORs exist
despite how trivial the condition is.

This bypasses conditional in the query and evals them upfront.

On meta for my user this made a 10x perf difference.

This boils down to either having `OR u.admin` or not having `OR u.admin` in
the query.
2019-04-05 15:25:19 +11:00
..
2019-04-04 17:38:27 -04:00
2019-04-04 14:19:39 +08:00