Re: [Monetdb-developers] Fw: Re: need help in monetdb xquery interface

Hi, to see the internals of the xquery compiler you can run "pf --help" and see all available options. There too many but there is an option to print the plan in different stages, such as xquery algebra, relational algebra, even the final produces MIL code. pf is the command line invocation of pathfinder (our xquery compiler). lefteris On Sat, Mar 6, 2010 at 7:02 AM, anshul gangwar wrote:

--- On *Fri, 5/3/10, Martin Kersten * wrote:

From: Martin Kersten Subject: Re: [Monetdb-developers] need help in monetdb xquery interface To: "anshul gangwar" Date: Friday, 5 March, 2010, 11:26 PM

anshul gangwar wrote:

...

hello , I want to know whether there is any expression or command or anything equivalent to explain sql construct. Also What is the way to There is material for you to study on the website: http://monetdb.cwi.nl/SQL/Documentation/SQL-Runtime-Features.html

http://monetdb.cwi.nl/SQL/Documentation/EXPLAIN-Statement.html#EXPLAIN-State...

...

get histogram statistics i.e way to find that histogram exists on attribute or not through Xquery interface. not through sql . MonetDB does not rely on separate statistics tables.

...

Please reply as soon as possible.

thank you.

Actually i want the xquery construct equivalent to sql explain construct and so how it simulates histogram features i.e to get that percentage of query etc.

Please reply as soon as possible.

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