#9885: post_batch_update Signal on QuerySets
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          Reporter:  matehat                       |         Owner:  matehat
            Status:  new                           |     Milestone:         
         Component:  Database layer (models, ORM)  |       Version:  1.0    
        Resolution:                                |      Keywords:         
             Stage:  Design decision needed        |     Has_patch:  1      
        Needs_docs:  1                             |   Needs_tests:  0      
Needs_better_patch:  0                             |  
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Comment (by matehat):

 Even if we can't be totally sure of the rows that are being updated or
 deleted, we still have a queryset in hand with the where clauses that
 should, in many cases, point the same rows before and after the update
 query, but an update query that updates the very columns that were used to
 build the queryset would indeed see that kind of signal useless.

-- 
Ticket URL: <http://code.djangoproject.com/ticket/9885#comment:11>
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