On Tuesday, December 1, 2015 at 3:39:02 PM UTC-5, Chris Withers wrote:
>
> Indeed, but that's not quite what I asked ;-)
>
> I'm after setting the next value using, eg, setval:
>
>
Ah, sorry.  I saw "next value" and thought "nextval", not setval.   

The `Sequence` object just seems to support a 
'next_value()' 
http://docs.sqlalchemy.org/en/latest/core/defaults.html#sqlalchemy.schema.Sequence

I looked in the source, and it looks like the postgres dialect only has a 
`nextval` operation.  Sqlalchemy's compiler and dialects seem to only 
support `create sequence` and `nextval` (there's no "alter sequence 
[restart with]" or "setval" equivalents).   It looks like you can only pass 
in a start value for the sequence on creation.

I think you may need to handle this with literal sql, and create a ticket 
or try to patch.  

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