Re: definition of "potentially bound" variable

On 14/09/10 09:58, Axel Polleres wrote:
> As for ACTION-304 I started a formal definition of "potentially bound" variable at
> this is not finished, but just to get the direction clear, based on that we can hopefully redefine "*".

Added MINUS (only the LHS), SERVICE and GROUP BY (assuming name 
introduction in GROUP BY)

The other definitions need to work with GROUP BY which hides the non-key 
variables variables.  To do this, it would seem easier to define the 
concept recursively, not declaratively.



Received on Tuesday, 14 September 2010 09:45:12 UTC