It's the default value(partition):
# grep exclusion postgresql.conf
#constraint_exclusion = partition?0?2?0?2?0?2 # on, off, or partition

btw, I'm on postgresql 9.2.4

?? 2014/7/24 1:35, Douglas J Hunley ????:

On Wed, Jul 23, 2014 at 6:21 AM, Rural Hunter <ruralhun...@gmail.com> wrote:
What's wrong and how can I improve the planning performance?

What is constraint exclusion set to?


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Douglas J Hunley (doug.hun...@gmail.com)

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