> On Sep 12, 2017, at 1:41 PM, Darko Volaric <li...@darko.org> wrote:
> You can implement this by using user defined functions to implement row
> "local variables" or "registers". They're single assignment storage that
> keeps intermediate results, namely the common subexpressions.
Thanks! That's a very interesting technique.
> Note that you would need to order these so they are evaluated in dependency
> order, i.e. ensure each name is set before it is got.
What's a good way to do that? Since SQL is a non-imperative language there
isn't much notion of order of operations. I can imagine using a
short-circuiting AND operator, but can I be guaranteed that this will always
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