[tmql-wg] TMQL Issue: Functions and Predicates as first-class
rho at bigpond.net.au
Fri Mar 9 16:28:15 EST 2007
On Fri, Mar 09, 2007 at 06:18:03AM -0800, Frederic Andres wrote:
> regarding TMQL Issue related to Functions and Predicates,
> wouldn't it be easier and cleaner to define a many-sorted algebra.
It would *definitely* be very clean. And also accessible to optimizers.
I only wonder how complex a definition for 'date' would be. date and
datetime are *incredibly* tricky and manyears have been invested
With all these formal things, the first yards are extremely elegant and
effective. But the final mile often adds a prohibitive cost.
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