[Koha-bugs] [Bug 20664] Optimize retrieval of biblio and item data

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

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=20664

--- Comment #56 from David Cook <dcook at prosentient.com.au> ---
(In reply to Ere Maijala from comment #55)
> This should provide a nice performance improvement also for exports for
> indexing.
> 

Excellent.

> MySQL is quick to prepare statements, that's why we can get away with it.
> Other databases may have different behavior, and there are certainly slower
> ones in that regard.

MySQL also makes some really bad query plans. Maybe that's how it achieves its
speed. For Koha's user-generated SQL Reports I've actually resorted to using
"index hints" lately to get efficient query plans. It's a MySQLism but can make
a world of difference as well. 

In any case, I think any improvement is a well worthwhile improvement :D. So
thanks for doing this one!

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