On Sep 9, 2011, at 8:41 AM, Simon Riggs wrote:

> Not sure I understand the limitation to 10-15 entries.

That's my rule of thumb as to when I prefer to re-express a query as a join 
rather than an IN.  Larger values can work just fine, but __in in Django tends 
to be abused with gigantic inclusion sets.

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-- Christophe Pettus
   [email protected]

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