Subject Extending execution path information in Vulcan
Author Arno Brinkman

I like to get some more information from the engine about the execution path choosen.
The information were i'm talking about, are the estimation numbers calculated by the optimizer such as Cardinality, Selectivity, Cost.
Recently i added an information item (isc_info_sql_get_raw_plan) to get the the raw (isc_info_xxx items) data from the execution path on the client, because the PLAN text information doesn't show all information.

Now is my proposal to extend these information items with isc_info_rsb_estimation and under this item the items for cardinality, selectivity and cost.
If nobody has objects i'll add this functionality to Vulcan.
The next question is how to represent a double (which data structure) in those information items.

Arno Brinkman

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