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Re: Passing more context info to selectivity-estimation code - Mailing list pgsql-hackers

From Heikki Linnakangas
Subject Re: Passing more context info to selectivity-estimation code
Date
Msg-id 4650145A.10500@enterprisedb.com
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In response to Passing more context info to selectivity-estimation code  (Tom Lane <tgl@sss.pgh.pa.us>)
Responses Re: Passing more context info to selectivity-estimation code
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Tom Lane wrote:
> Comments, better ideas?

How about building a separate Var-node for the variable when it's above 
an outer join? That node would point to the original Var, and have an 
additional modifier which indicates the percentage of injected nulls.

--   Heikki Linnakangas  EnterpriseDB   http://www.enterprisedb.com

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