Re: [PATCH] Caching for stable expressions with constant arguments v3 - Mailing list pgsql-hackers

On 05.12.2011 21:36, Tom Lane wrote:
> Heikki Linnakangas<heikki.linnakangas@enterprisedb.com>  writes:
>> Or pass a flag to ExecInitExpr() to skip through the CacheExprs.
>
> Not sure what you mean by that --- are you imagining that the ExprState
> tree would have structure not matching the Expr tree?

Yes. Or it could just set a flag in the CacheExprState nodes to not do 
the caching.

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