On 09/06/2013 12:35 PM, Tom Lane wrote:
Brian Fehrle <brianf@xxxxxxxxxxxxxxxxxxx> writes:
On 09/05/2013 05:50 PM, Tom Lane wrote:
I rather doubt that the now-explicit-instead-of-implicit casts have much
to do with that. It seems more likely that you forgot to re-ANALYZE in
the new database, or there are some different planner settings, or
something along that line.
I have two versions of the view in place on the same server, one with
the typecasting and one without, and this is where I see the differences
(no ::text runs in 0.5ms and with ::text runs in 13 or so minutes with
nested loop), so it's all running off the same statistics on the data.
Hm. Can you provide a self-contained example?
I'll see what I can do to recreate this with bogus data. It's sensitive
data that may just be some sort of anomaly in terms of the data
distribution that is causing it.
- Brian F
regards, tom lane
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