Re: No hash join across partitioned tables?

On Sat, Oct 16, 2010 at 1:22 AM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
> Alvaro Herrera <alvherre@commandprompt.com> writes:
>> If we analyze the parent, do we also update the children stats, or is it
>> just that we keep two stats for the parent, one with children and one
>> without, both being updated when the parent is analyzed?
>
> The latter.
>
> The trick here is that we need to fire an analyze on the parent even
> though only its children may have had any updates.

Can we execute a SQL query at the point where we need this
information?  Because it doesn't seem too hard to work up a query that
totals the inserts, updates, and reltuples across all children of each
table.

-- 
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
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