DB = Sequel.postgres('my_db', :host=>'/tmp', :user=>'db_user', :password=>'secret')

dataset = DB['select * from tbl_user']
puts dataset.count



/usr/local/lib/ruby/gems/1.8/gems/sequel-2.4.0/lib/sequel_core/adapters/postgres.rb:202:in `execute': invalid connection option "opt" (Sequel::Error)
	from /usr/local/lib/ruby/gems/1.8/gems/sequel-2.4.0/lib/sequel_core/dataset.rb:421:in `execute'
	from /usr/local/lib/ruby/gems/1.8/gems/sequel-2.4.0/lib/sequel_core/adapters/postgres.rb:277:in `fetch_rows'
	from /usr/local/lib/ruby/gems/1.8/gems/sequel-2.4.0/lib/sequel_core/dataset.rb:198:in `each'
	from /usr/local/lib/ruby/gems/1.8/gems/sequel-2.4.0/lib/sequel_core/dataset/convenience.rb:180:in `single_record'
	from /usr/local/lib/ruby/gems/1.8/gems/sequel-2.4.0/lib/sequel_core/dataset/convenience.rb:187:in `single_value'
	from /usr/local/lib/ruby/gems/1.8/gems/sequel-2.4.0/lib/sequel_core/dataset/sql.rb:62:in `count'
	from /usr/local/lib/ruby/gems/1.8/gems/sequel-2.4.0/lib/sequel_core/dataset/sql.rb:62:in `count'