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Message #02399
[Bug 673394] Re: Queries for subj_uri and subj_origin are using no index
** Branch linked: lp:~thekorn/zeitgeist/db_schema_3
** Changed in: zeitgeist
Status: Confirmed => In Progress
** Changed in: zeitgeist
Assignee: (unassigned) => Markus Korn (thekorn)
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Queries for subj_uri and subj_origin are using no index
https://bugs.launchpad.net/bugs/673394
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Status in Zeitgeist Framework: In Progress
Bug description:
We have a bunch of queries which are using no index and therefor are much slower than others, this is one example:
Running: engine.find_eventids(TimeRange.always(), [], StorageState.Any, 6, ResultType.MostRecentSubjects)
DEBUG:zeitgeist.sql:Got query:
QUERY:
SELECT DISTINCT id FROM event_view GROUP BY subj_uri ORDER BY timestamp DESC LIMIT 6 ([])
PLAN:
[0, 0, u'TABLE event']
[0, 0, u'TABLE uri USING PRIMARY KEY']
DEBUG:zeitgeist.engine:Found 6 event IDs in 0.571514s
---> MostRecentSubjects: get len(ids)=6 using .find_eventids() in 0.571749s
All quries with subj_uri and subj_origin are affected.
References