20-21 November 2014

15Hatfields, London, UK

Opaleye - type safe and composable SQL queries in Haskell

Session Title

Opaleye - type safe and composable SQL queries in Haskell

Session Type Tutorial
Duration 45 minutes
Session Description

Opaleye is an embedded domain specific language bringing typesafe and composable SQL queries to Haskell. Its aim is to allow users to write reusable fragments of query code and combine them into larger queries with compile-time guarantees that they result in valid SQL. It has been used in production over the last year.


Tom Ellis (Purely Agile)

Tom Ellis studied Computer Science and Mathematics at Cambridge University before becoming a software developer in the finance industry. In 2013 he started Purely Agile, a Haskell-based software development consultancy.

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Cara Hanman

FP Days 2014 Session Types

Need help planning which sessions to attend? We've provided a breakdown of our various session types below.

Case Study/Experience Report

A presentation and discussion of real-life (not theoretical) experiences of the application (or mis-application) of service design techniques. Case studies and experience reports include some discussion of lessons learned and an indication of how novel the work is.


Participants learn a new approach, tool or technology through using it to solve one or more practical exercises. Any software/hardware requirements are disclosed in the session description.


A session focused around some specific tool, technique or issue. Primarily led by the speaker, tutorials usually include some elements of interactivity or individual / group exercise.


An in-depth working session on a specific topic. May include paper presentations.