[Koha-bugs] [Bug 5866] At larger hold volume, waitingreserves.pl for all libraries times out, can cause generalized slowness

[bugzilla-daemon at bugs.koha-community.org]

http://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=5866

--- Comment #2 from Chris Cormack <chris at bigballofwax.co.nz> 2011-08-25 01:51:00 UTC ---
The problem here, is the query is this

SELECT borrowernumber,reservedate,itemnumber,waitingdate FROM reserves        
WHERE   priority='0'  AND found='W';

With makes use of no indexes

 CREATE INDEX priorityfoundidx ON reserves (priority,found);

Will create a composity key, which then will be used by the query which should
reduce the time taken to search a lot.

Will create a patch

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