[Monetdb-developers] how to find cost

Stefan Manegold Stefan.Manegold at cwi.nl
Thu Mar 11 20:07:32 CET 2010


On Thu, Mar 11, 2010 at 11:07:52PM +0530, Puneet Birwa wrote:
> hello,
>          thanks for help, but also can u tell me any way to find the cost of final execution plan, m unable to find any option to see what is the actual cost of final execution plan.

The actual cost (i.e., time) to execute a query (plan) is reported when
mclient is called with the "-t / --time" option; see also
`mclient --help` and/or
http://monetdb.cwi.nl/XQuery/Documentation/The-Mapi-Client-Utility.html
.

As explained in previous posting on this list, the current open-source
release of MonetDB/XQuery does not use/have any cost estimation.

Stefan

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