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

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anshul gangwar

6 Mar 2010 6 Mar '10

6:02 a.m.

--- 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. The INTERNET now has a personality. YOURS! See your Yahoo! Homepage. http://in.yahoo.com/

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Lefteris

6 Mar 6 Mar

9:43 a.m.

New subject: [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.

------------------------------ Your Mail works best with the New Yahoo Optimized IE8. Get it NOW!http://in.rd.yahoo.com/tagline_ie8_new/*http://downloads.yahoo.com/in/intern... .

------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ Monetdb-developers mailing list Monetdb-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/monetdb-developers

Stefan Manegold

9:53 a.m.

On Sat, Mar 06, 2010 at 11:32:03AM +0530, 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

MonetDB/XQuery does not provide such feature. To see the equivalent of the SQL EXPLAIN output, i.e., the MIL plan generated from your XQuery query, you need to use the Pathfinder stand-alone compiler "pf"; see `pf --help` and/or `pf --fullhelp` for details.

...

so how it simulates histogram features i.e to get that percentage of query etc.

Like MonetDB/SQL also MonetDB/XQuery does not rely on separate statistics such as histograms. Stefan

...

Please reply as soon as possible.

The INTERNET now has a personality. YOURS! See your Yahoo! Homepage. http://in.yahoo.com/

...

------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev

...

_______________________________________________ Monetdb-developers mailing list Monetdb-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/monetdb-developers

anshul gangwar

1:53 p.m.

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

--- On Sat, 6/3/10, Stefan Manegold wrote: From: Stefan Manegold Subject: Re: [Monetdb-developers] Fw: Re: need help in monetdb xquery interface To: "anshul gangwar" Cc: monetdb-developers@lists.sourceforge.net Date: Saturday, 6 March, 2010, 3:23 PM On Sat, Mar 06, 2010 at 11:32:03AM +0530, 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.

Like MonetDB/SQL also MonetDB/XQuery does not rely on separate statistics such as histograms. Stefan

...

Please reply as soon as possible.

how can we get the estimate of the size of result of query based on any two attributes with varying range Your Mail works best with the New Yahoo Optimized IE8. Get it NOW! http://downloads.yahoo.com/in/internetexplorer/

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anshul gangwar
Lefteris
Stefan Manegold