Thompsonbry.systap added a comment. This part could be expensive. Instead of having a prefix scan, it is scanning all statements, materializing the Object position from the dictionary, and then checking the string representation of that URI for a match.
http://www.wikidata.org/entity/Q30 ?statementPred ?s . FILTER( STRSTARTS(STR(?s), ""http://www.wikidata.org/entity/statement/";) ) . We should try to make this a prefix scan on the inline IV range for http://www.wikidata.org/entity/statement/. This will require being smarter about pushing down filters. I have copied Michael who has been looking at how to improve our FILTER handling. Thanks, Bryan ---- Bryan Thompson Chief Scientist & Founder SYSTAP, LLC 4501 Tower Road Greensboro, NC 27410 [email protected] http://blazegraph.com http://blog.bigdata.com http://bigdata.com http://mapgraph.io Blazegraph™ http://www.blazegraph.com/ is our ultra high-performance graph database that supports both RDF/SPARQL and Tinkerpop/Blueprints APIs. MapGraph™ http://www.systap.com/mapgraph is our disruptive new technology to use GPUs to accelerate data-parallel graph analytics. CONFIDENTIALITY NOTICE: This email and its contents and attachments are for the sole use of the intended recipient(s) and are confidential or proprietary to SYSTAP. Any unauthorized review, use, disclosure, dissemination or copying of this email or its contents or attachments is prohibited. If you have received this communication in error, please notify the sender by reply email and permanently delete all copies of the email and its contents and attachments. TASK DETAIL https://phabricator.wikimedia.org/T96094 REPLY HANDLER ACTIONS Reply to comment or attach files, or !close, !claim, !unsubscribe or !assign <username>. EMAIL PREFERENCES https://phabricator.wikimedia.org/settings/panel/emailpreferences/ To: Thompsonbry.systap Cc: M.schmidt00, Thompsonbry, Thompsonbry.systap, Beebs.systap, Haasepeter, Manybubbles, Aklapper, Smalyshev, jkroll, Wikidata-bugs, Jdouglas, aude, GWicke, daniel, JanZerebecki _______________________________________________ Wikidata-bugs mailing list [email protected] https://lists.wikimedia.org/mailman/listinfo/wikidata-bugs
