I have a self join (same one I've been asking about recently) and turns
out that there should be a one to one mapping for the aggregated rows on
one side to the aggregated rows on the other side.
If that's not true, then the returned rows are rubbish. In all my
current use cases it *should* be true but I'm looking for a join that
will show me when something has changed by having nulls in either the
left or right side of the join.
If you can suggest a way that doesn't involve a full outer join, I'm all
ears :-)
On 01/12/2013 22:20, Michael Bayer wrote:
I have a similar question - why ?
On Dec 1, 2013, at 5:08 PM, Chris Withers <ch...@simplistix.co.uk> wrote:
This feels like a newbie question, but how would I do a full outer join in
SQLAlchemy?
Chris
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