I've been working as a Ruby on Rails developer the last couple of months. It's interesting to see how my impression of MySQL changes when I'm on the other side - and using a development environment I am less familiar with. Here are a two things I wished I could have been able to do:
--log-warnings=2is enabled, log all statements the server receives that cause warnings or syntax errors.
--log-warnings=2is enabled and
--some-other-setting, log all statements which return empty results.
Not that it caused me too much pain - but I think I could have benefited. I think I've read something about both of these before too... anyone know if it was in the Drizzle or Google patches?