Re: Better estimates of index correlation - Mailing list pgsql-hackers

From Robert Haas
Subject Re: Better estimates of index correlation
Date
Msg-id AANLkTi=oEmZzD0feYQzpXo8VjmOFUGB8p6zRDCGZJoHv@mail.gmail.com
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In response to Re: Better estimates of index correlation  (Tom Lane <tgl@sss.pgh.pa.us>)
Responses Re: Better estimates of index correlation
List pgsql-hackers
On Mon, Mar 14, 2011 at 10:38 AM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
> Note that we could remove the correlation
> calculations from ANALYZE altogether.

Only if you don't mind having them only get updated when somebody
vacuums.  If a table is mostly getting inserted into, it may not get
vacuumed very often (or possibly even - never).

-- 
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company


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