Replace copy dispatching with proper sqlalchemy expression
Replace copy dispatching with proper sqlalchemy expression

cpcloud/odo,quantopian/odo,alexmojaki/odo,ywang007/odo,blaze/odo,cowlicks/odo,blaze/odo,quantopian/odo,ContinuumIO/odo,ywang007/odo,Dannnno/odo,cpcloud/odo,alexmojaki/odo,Dannnno/odo,ContinuumIO/odo,cowlicks/odo