Misleading error message when `=` is used instead of `:=`

[liufengyun]

I am using named tuples in a project, it works nicely, great work 👍

However, I encountered a usability problem: a silly mistake that took me some time to debug.

Given a model that works well:

case class City(id: Int, name: String)

City.insert.columns(_.name := "Lausanne").returning(_.id).single

When I add a new field rating and update the query with a mistake (used = instead of :=):

case class City(id: Int, name: String, rating: Int)

City.insert.columns(_.name := "Lausanne", _.rating = 3).returning(_.id).single

The compiler complains that:

value rating is not a member of scalasql.namedtuples.SimpleTable.Record[City, scalasql.query.Column]

However, the field is there. It would be nice to avoid the misleading message.