On Dec 20, 2011, at 9:52 PM, Nico Williams wrote:

> It'd be nice to have recursive queries (with tail-call optimization).

Yes for recursive with clauses!

http://gennick.com/with.html

> Then a lot of things get easier.

Like solving that damn sodoku puzzle:

Solving a Sudoku using Recursive Subquery Factoring
http://technology.amis.nl/blog/6404/oracle-rdbms-11gr2-solving-a-sudoku-using-recursive-subquery-factoring

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