[Koha-bugs] [Bug 7886] C4/ShelfBrowser slow SQL performance

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

http://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=7886

Dobrica Pavlinusic <dpavlin at rot13.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Attachment #8895|0                           |1
        is obsolete|                            |

--- Comment #7 from Dobrica Pavlinusic <dpavlin at rot13.org> ---
Created attachment 8976
  -->
http://bugs.koha-community.org/bugzilla3/attachment.cgi?id=8976&action=edit
Bug 7886 - C4/ShelfBrowser slow SQL performance

ShelfBrowser uses two SQL queries with syntax

WHERE ((cn_sort = ? AND itemnumber < ?) OR cn_sort < ?)
AND homebranch = ? AND location = ? AND ccode = ?

homebranch already has index, and adding indexes on ccode and location
improves performance by 30% for each query since MySQL is able to use
index_merge intersect(items_ccode,homebranch,items_location)

-- 
You are receiving this mail because:
You are watching all bug changes.