Hmm, I have two machines connecting to the same database running the same query 
inside copy_expert.

Both seem to have psycopg2 2.7.5 (based on pip3 freeze).

One seems to be rounding the double precision number 696538951.985381 to 
6.96538944E8 whereas the other machine isn't rounding it.

This is causing auditability/repeatability problems, as the difference is 
actually significant in this context.

Is there some thing about the way psycopg2 connects to the database, or the way 
psycopg2 is configured, that could be causing this rounding? Is there some way 
to express a preference for scientific notation?  

I'm at a complete loss as to why copy_expert (which basically does a 'copy to 
stdin' query) would be different when called from different machines. My next 
step in the madness is to see if the locale has an effect, one is set to 
en_CA.UTF-8 and the other is set to en_US.UTF-8.  But, perhaps someone else has 
a better idea. 

Thanks for any help. 

--
John Abraham
j...@hbaspecto.com
403-232-1060

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