Hi,
  I have 2 records in the database. I made an expression to update only
1 record, but all are getting updated.


works=session.query(Work).filter(tnow-Work.taken<timedelta(minutes=15)) 
.filter(Work.completed==None).limit(1).with_lockmode(mode='update').update(values)

Shouldn't the above query only perform the update on the limited results
of the query?

Darren


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