Ecto - Postgresql wiki: Don't do this

[OvermindDL1]

@hauleth

The most important thing on this list that is not possible in Ecto right now is usage of existential queries . Right now the only option is to use anti-joins instead.

Yeah I’ve had to help someone who had a nil in a blah not in ^thing, Ecto really needs to not use NOT IN in sql…