GPU Database SQream DB's (http://www.sqream.com http://www.sqream.com) main component is Haskell based, in two parts: 1. The open source SQL parser - HsSqlPpp

GPU Database SQream DB's (http://www.sqream.com http://www.sqream.com) main component is Haskell based, in two parts: 1. The open source SQL parser - HsSqlPpp https://github.com/jakewheat/hssqlppp https://github.com/jakewheat/hssqlppp, 35700 LOC + 3900 LOC of tests 2. The compiler and optimizer (proprietary) is roughly 55,000 Haskell LOC Edit: And we use Pandoc and Quickcheck internally for a bunch of different things