Re:The Imposter's Handbook
by kchoudhu on Wednesday August 24, 2016 @11:45AM
(#12352855)
Not to mention that most of the kids today would have stowed their entire population of receipts in whatever the datastore flavor-of-the-week is. At that point, the lookup would effectively be a SELECT -- which the DBMS would optimize away for you.
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.. unless they've forgotten the index, at which point the DBMS grinds to a halt.
Or they've written the query on the wrong side of the ORM so it has to pull in all the objects, check the value, and discard them.
Re:The Imposter's Handbook
by emodendroket on Wednesday August 24, 2016 @03:26PM
(#12354567)
A very simple example that I think is "real-world" enough is recursively descending the fields of some object which has cycles. If you use a list instead of a set this can be quite slow.