Re: Guidance on INSERT RETURNING order

On 2023-04-11 15:45:59 -0600, Rob Sargent wrote:
> > > Can your client retain a hashmap of md5,data pairings, allowing the
> > > lookup on the way back using the returned data and supplied id?
> > >
> > When using unique columns or similar, that's something that is done,
> > but if there are no unique columns in the value no match can be done
> > reliably with the source data, since sqlalchemy is a library that
> > allows arbitrary schemas to be generated.

> So you're returned data is not what was sent to the server? Otherwise it
> should generate the same md5, as I understand it.

That's not necessarily the case. There are quite a few data types where
the input value is truncated, rounded or otherwise normalized. So I
don't think you can generally expect to read back exactly the same value
you inserted.

hp

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