Hi,
Thanks for your reply. I was able to get it working.
I am posting my script here for reference - variables could be renamed
to something more human readable, but at least it is capable of dumping
huge result sets (multiple GB). *
Bascially you pass in a sparql select query that has 3 vari
Hi all
Found what may or may not be a bug in the ADO.Net provider. Not sure if
the behaviour is intentional or incorrect.
If I create a DataTable and don't specify any columns then make a SPASQL
query via the ADO.Net provider and fill the DataTable using the
VirtuosoDataAdapter then everythin
Hi Ivan,
thank you, the parantheses are indeed the solution to our problem.
The Virtuoso OpenSource version that produced the problem is 06.01.3126
We did not experience the problem with version 06.01.3127
Cheers
Martin
On 02.03.2011 11:07, Ivan Mikhailov wrote:
Hello Martin,
Expressions in
Hi all
I've found what appears to be a major bug with Virtuoso's SPARQL results
for one specific query namely:
SELECT DISTINCT ?g WHERE { GRAPH ?g { ?s ?p ?o } }
When this query is executed results come back as elements in the
XML results rather than as elements. If you remove the DISTINCT
Hi Claus,
As described in http://docs.openlinksw.com/virtuoso/fn_exec.html, the "rows"
parameter is "An output array with one element per result row containing an
array with the leftmost column as element 0 and so forth".
Processing further the result can be done for ex. such as:
exec (,
Hello Claus,
sparql define output:format "NT" construct { ?s a ?t } from virtrdf:
where { ?s a ?t };
works, the doc is slightly out-of-date there.
For iteration over result-set of an arbitrary query, use exec_next()
http://docs.openlinksw.com/virtuoso/fn_exec_next.html
in a loop that begins with
Hello Martin,
Expressions in SPARQL result list need parentheses, like
define sql:signal-void-variables 1 select ?s ?ld ?le (bif:length(?ld))
as ?l ...
The rationale for this syntax is that for some expressions it is
impossible to distinguish between one column with long expression or two
column
Hi,
Virtuoso Edition is OpenSource:
Version:
* Version: 06.01.3126
* Build: Feb 19 2010
Installed a few days ago on an Ubuntu system using the ubuntu/debian
package.
The exact query should not be important as I observed the problem no
matter which query I fired as long as it used sql
Dear all,
I'm experiencing again the following exception when loading data into
VOS 6.1.2 through Jena:
SR175: Uniqueness violation : Violating unique index RDF_QUAD_POGS on
table DB.DBA.RDF_QUAD. Transaction killed.
Last time I tried to solve the problem following the indications in the message
