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Which "HyperDB" are you talking about? I already listed Tableau's HyPer. Here are the other "hyper" systems that I know about and they don't do LLVM compilation:

* HyperDex (http://hyperdex.org/)

* HyperGraphDB (http://www.hypergraphdb.org/)

* HyperSQL (http://hsqldb.org/)

* Hypertable (http://hypertable.org/)

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The one from the groundbreaking 2011 VLDB paper on SQL query compilation with LLVM http://hyper-db.de

That's the same as Tableau's HyPer. From the page you linked to:

"The commercial license for HyPer, a spin-off of TUM, has been acquired by Tableau Software"

I stand corrected

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