August 2009 - users-list

[MonetDB-users] Proofreading your professional documents
by Richard Hounslow 24 Feb '24

24 Feb '24

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[MonetDB-users] ubuntu server installation / php modules
by dariuszs 29 Mar '10

29 Mar '10

Hi, I've installed monetdb on *Ubuntu 9.04 Server* with apt-get. These are the contents of php client /. /usr /usr/share /usr/share/doc /usr/share/doc/php5-monetdb-client /usr/share/doc/php5-monetdb-client/changelog.Debian.gz /usr/share/doc/php5-monetdb-client/copyright I need the moduels, where are they? Thanks. Dariusz.

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[MonetDB-users] Possible wrong results when Querying
by LeonardF 10 Nov '09

10 Nov '09

Hi There, I have some problem with the row_number() over() function. Consider the following table: create table "table1" ("customer" varchar(40), "product" varchar(40), "price" double) insert into "table1" values ('cust1', 'p1', 100) insert into "table1" values ('cust1', 'p2', 200) insert into "table1" values ('cust1', 'p3', 150) insert into "table1" values ('cust2', 'p1', 300) insert into "table1" values ('cust2', 'p3', 200) The following query over this table: SELECT "customer", "product", "sumprice", (Row_number() OVER(PARTITION BY "customer" ORDER BY "sumprice")) as "rank" FROM ( SELECT "customer", "product", (Sum("price")) AS "sumprice" FROM "table1" GROUP BY "customer", "product") AS "temp" Returns: Customer product sumprice rank Cust1 p1 100 1 Cust1 p2 200 2 Cust1 p3 150 3 Cust2 p1 300 1 Cust2 p3 200 2 But doesn’t it suppose to return the following result set?: Customer product sumprice rank Cust1 p1 100 1 Cust1 p3 150 2 Cust1 p2 200 3 Cust2 p3 200 1 Cust2 p1 200 2 Thanks -- Leonard Forgge -- View this message in context: http://www.nabble.com/Possible-wrong-results-when-Querying-tp22821802p22821… Sent from the monetdb-users mailing list archive at Nabble.com.

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[MonetDB-users] OpenSSL and SHA512
by Alex Bo. 08 Sep '09

08 Sep '09

Hi, I have compiled the latest August build from CVS on windows. When I run mclient, I get this: server requires 'SHA512' hash, but client support was not compiled in I saw another thread regarding this before, but couldn't resolve the issue based on it. Please let me know what I might be doing wrong. Here is my server output: # MonetDB server v5.14.0, based on kernel v1.32.0 # Serving database 'demo', using 1 thread # Compiled for i686-pc-win32/32bit with 32bit OIDs dynamically linked # Copyright (c) 1993-July 2008 CWI. # Copyright (c) August 2008-2009 MonetDB B.V., all rights reserved # Visit http://monetdb.cwi.nl/ for further information #warning: please don't forget to set your vault key! #(see C:\MonetCVS_base_Aug09\MonetCVS32_cleanBuild\Install\etc\monetdb5.conf) # Listening for connection requests on mapi:monetdb://127.0.0.1:50000/ > Thanks. -- View this message in context: http://www.nabble.com/OpenSSL-and-SHA512-tp25223356p25223356.html Sent from the monetdb-users mailing list archive at Nabble.com.

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[MonetDB-users] Long query response time with 'in' statement
by mkurtulus 02 Sep '09

02 Sep '09

Hi, I'm trying to create a benchmark MonetDB vs Postgres and for many types of queries, MonetDB quite faster than Postgres.But there is an interesting result when i try a query which contains an 'in' statement.The response times are MonetDB - 58 sec Postgres - 3 sec for the query : select RFOADV_10.rfoadvsup as c0, sum((case when cabact___rfountide = 'NB_E' then cabactqte else 0 end)) as m0 from RFOADV as RFOADV_10, CABACT as CABACT where (cabact___rforefide = 'FHSJ' and cabact___rteprcide = 'CPTANA' and cabact___rtestdide = '100' and cabact___rfovsnide = '200805_001') and CABACT.cabact_c2rfodstide = RFOADV_10.rfoadvinf and RFOADV_10.rfoadvsup in ('5030', '5031', '5032', '5033', '5034', '5035', '5036', '5037', '5038') group by RFOADV_10.rfoadvsup i reform the query so that it can give the same result without 'in' : select RFOADV_10.rfoadvsup as c0, sum((case when cabact___rfountide = 'NB_E' then cabactqte else 0 end)) as m0 from RFOADV as RFOADV_10 join CABACT on (CABACT.cabact_c2rfodstide = RFOADV_10.rfoadvinf) join (select '5031' as pole UNION select '5032' as pole UNION select '5033' as pole UNION select '5034' as pole UNION select '5035' as pole UNION select '5036' as pole UNION select '5037' as pole UNION select '5038' as pole ) sub ON (RFOADV_10.rfoadvsup = sub.pole) where (cabact___rforefide = 'FHSJ' and cabact___rteprcide = 'CPTANA' and cabact___rtestdide = '100' and cabact___rfovsnide = '200805_001') group by RFOADV_10.rfoadvsup the response time for MonetDB decreases 100 times (0.6 sec). Do you have any idea about it ? I run both Monetdb and Postgres on a server with 10GB Ram and the tables have CABACT : 677000 RFOADV : 140000 rows. Thanks, Mehmet -- Open WebMail Project (http://openwebmail.org)

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[MonetDB-users] COPY...INTO with auto increment
by Matthew Jones 31 Aug '09

31 Aug '09

I noticed that COPY...INTO for bulk loading requires that all fields be present in the data file. Is there any way to use bulk loading and have it honor the auto increment column or at least not have to specify every column in the data file? 73, Matthew W. Jones (KI4ZIB) http://matburt.net

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[MonetDB-users] Function overloading
by Alex Bo. 30 Aug '09

30 Aug '09

Hi, I am trying to create an overloaded iif function, so I created these custom functions: 1. create function iifnew(tv timestamp, fv timestamp, cond boolean) returns timestamp begin if cond then return tv; else return fv; end if; end 2. create function iifnew(tv int, fv int, cond boolean) returns int begin if cond then return tv; else return fv; end if; end 3. create function iifnew(tv string, fv string, cond boolean) returns string begin if cond then return tv; else return fv; end if; end But now, if I do something like this: update table1 set "Column1" = iifnew('hello1', 'hello2', ("Column2" = "Column3")) I get this: !SQLException:int:conversion of string 'hello1' failed Is this a bug in function overloading? I am running Feb2009 from CSV on Windows. Thanks. -- View this message in context: http://www.nabble.com/Function-overloading-tp25210862p25210862.html Sent from the monetdb-users mailing list archive at Nabble.com.

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[MonetDB-users] tijah phrase search problem
by Roy Walter 27 Aug '09

27 Aug '09

The following query: tijah:queryall("//p[about(., 'drug treatment')]") returns a number of results from my sample document. Some of these results contain the phrase "drug misuse". The following query: tijah:queryall("//p[about(., 'drug misuse')]") returns zero results from the sample document, which is clearly incorrect since some results returned by the first query should be returned by the second. I have deleted and reloaded the sample document and I have recreated the tijah index and the result is consistently incorrect. Is this a bug? -- Roy

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[MonetDB-users] What's the best file system and sector size for monetdb?
by Allen Zhang 26 Aug '09

26 Aug '09

Hi, What is the best suitable file system and sector size for monet dbfarm? Can anyone share the experience? Thanks Allen

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[MonetDB-users] Performance vs postgresql
by jatin patni 23 Aug '09

23 Aug '09

Hi, I am in the process of evaluating two major databases....monetdb and postgresql for building a backend database system for backtesting on huge historical data sets around 100GB. I copied some test data(a 250mb table) using bulk copy in both and monetdb was way faster. But when I did a simple query "SELECT * from tablename", it took around 3 minutes for 1 lakh rows via mclient and a gui interface (aqua studio based on JVM simply said out of memory). The bulk copy file was in the format collumns seperated by pipes in a text file. While using postgresql, at first it was slow but once I did a vacuum(function in postgresql), the (select * from tablename) was much faster than monetdb. So, what am I missing here, Do I need to do something to enhance the performance in Monetdb....... I have high hopes from monetdb, so please help. Thanks -- Jatin Patni Tel: 91 9911 649 657 jatinpatni(a)gmail.com www.jatinpatni.co.nr

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