Re: [Sqlalchemy-tickets] [sqlalchemy] #1416: Session.get_bind() doesn't separate mapped joins into individual tables when searching __binds

[sqlalchemy <mi...@zz...>]

#1416: Session.get_bind() doesn't separate mapped joins into individual tables
when searching __binds
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    Reporter:  guest            |       Owner:  zzzeek                
        Type:  defect           |      Status:  new                   
    Priority:  medium           |   Milestone:                        
   Component:  orm              |    Severity:  no triage selected yet
  Resolution:                   |    Keywords:                        
Status_field:  awaiting triage  |  
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Comment (by guest):

 First requires early binding of runtime configuration as global state,
 which is always bad way. Sometimes I need per session configuration.

 Regarding second suggested solution. It's easy to obtain a list of tables
 from several metadata objects to pass as binds parameter. Collecting model
 classes for each engine requires some work. Moreover there is a lot of
 tasks when we have to select just a single aggregate value. Model class is
 not memorized in such query object and engine lookup doesn't work when
 model classes are used in binds.

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Ticket URL: <http://www.sqlalchemy.org/trac/ticket/1416#comment:4>
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