Callum Ryan

the bind placeholder `?` will not work with pg databases, which use `$1..$N` format unfortunately. [sqlx docs](https://docs.rs/sqlx/latest/sqlx/fn.query.html#you-should-always-prefer-query-parameters-for-dynamic-input)

> Hi, I need more time to review the SQL individually. Here are some additional comments that I believe should take priority. > > By the way, have you considered...

> Thanks @callum-ryan for this great pr! Generally LGTM, I've left some minor points to fix, others are great! One thing I want to ask is that do we have...