About Open Query

Open Query is Australian owned, self funding, debt-free, organically growing, and profitable since its inception. Open Query was founded by Arjen Lentz, previously MySQL employee#25.

Open Query delivers training and expertise for MySQL and other Open Source tools, through

We focus on MySQL and related technologies, with particular expertise in design, scale-out and performance tuning. All you need! We charge reasonable rates, as we feel it most important to build an ongoing relationship. Our training and consulting is focused on giving you the additional information and skills you need to help yourself. If you don't have the staff internally, our remote service subscription is there when you need it. Our pricing is simple, clear, affordable, and published on our site.


Additional points of possible interest: 

  • Open Query business cards are printed on 100% post-consumer recycled paper.
  • The now illustrious Open Query "transactional writing implements (with rollback)" are made from recycled newspaper rather than wood.
  • Our invoicing is done in PDF over email, we have not had to print/post a single invoice yet (we would if someone asks).
  • Open Query headquarters uses 100% certified green power.
  • Of course travel (for training, conferences, on-site consulting) has a major impact on our carbon footprint. We're pondering ways to minimise this. (Just offsetting is a cop-out, in our opinion. The core problem that needs to be addressed is the consumption.)
We do these things because we want to, not to give Open Query some magical green stamp or environmental image. This is probably the only place where you will see us write anything about it. To us, thinking about these things is simply another intrinsic part of building a company sensibly. In this context, it's generally not even a cost factor and can often bring savings.

The Open Query name and logo are trademarks of Arjen Lentz. Other trademarks and registered trademarks are the property of their respective owners.