Andrea Franz f80b5e66a2
add PinnedBy to PinnedMessage (#2250)
* add PinnedBy to PinnedMessage

* change PinMessage to have named embedded struct for Message

* update pinned messages API response
2021-06-08 17:23:32 +02:00
..
2020-01-10 19:59:01 +01:00
2020-01-10 19:59:01 +01:00
2020-04-16 15:51:28 +02:00
2021-01-08 08:43:16 +01:00

How to write migrations?

We only write up migrations, down migrations are not always possible in sqlite or too complex/too expensive. For example to remove a column you would have to duplicate the table, copy over the data, delete and recreated. This can be very expensive for some tables (user_messages for example), so should not be attempted.

Notes

One issue we faced multiple times is that updates to user_messages can be very expensive, leading to slow upgrade times and interrupted migrations. So avoid writes if not necessary.