| daniel created this task. daniel added projects: Wikidata, Wikidata-Query-Service, Upstream. Herald added a subscriber: Aklapper. Herald added a project: Discovery. |
TASK DESCRIPTION
Even trivial use of BIND to assign a name to some constant causes query performance to degrade. Queries without the BIND are about 8x faster for the below example:
<Alphos> by the way, in quite a few examples, there are BIND clauses that are plain unnecessary. instead of http://tinyurl.com/hnb226m (12170 ms), why not replace the bound values where needed ? http://tinyurl.com/zgvywop (same results, 1656 ms)
(Reported by Alphos on #wikidata)
The problem is perhaps caused by this BlazeGraph bug: Strategies for VALUES+BIND queries
TASK DETAIL
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To: daniel
Cc: Aklapper, Jonas, Alphos, Smalyshev, hoo, daniel, Avner, debt, Gehel, D3r1ck01, FloNight, Xmlizer, Izno, jkroll, Wikidata-bugs, Jdouglas, aude, Deskana, Manybubbles, Mbch331, Jay8g, Krenair
Cc: Aklapper, Jonas, Alphos, Smalyshev, hoo, daniel, Avner, debt, Gehel, D3r1ck01, FloNight, Xmlizer, Izno, jkroll, Wikidata-bugs, Jdouglas, aude, Deskana, Manybubbles, Mbch331, Jay8g, Krenair
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