sequel_marginalia
Kind of port of 37signals' marginalia for use with Sequel. (It's rather port of an idea than code.)
It just adds comments about caller code to your Sequel SQL queries.
When used, produces SQL like this:
SELECT COUNT(*) FROM `clients`
/* lib/myapp/somefile.rb:40:in `some_method' */
Usage
Install it is a gem.
Than just do
my_database.extension :marginalia
and it's here.
Being dead simple, should presumably work with and DB adapter, though tested only with mysql2.