Re: [PROPOSAL] extend the object names to the qualified names inpg_stat_statements - Mailing list pgsql-hackers

Alvaro Herrera-9 wrote
> On 2018-Nov-28, Tom Lane wrote:
> 
>> This would also entail rather significant overhead to find out schema
>> names and interpolate them into the text.
> 
> True.  I was thinking that the qualified-names version of the query
> would be obtained via ruleutils or some similar mechanism to deparse
> from the parsed query tree (not from the original query text), where
> only pg_catalog is considered visible.  This would be enabled using a
> GUC that defaults to off.

maybe that explain on "table with many columns" suffers from the same 
problem, see:

https://www.postgresql.org/message-id/1537816948278-0.post%40n3.nabble.com

https://www.postgresql.org/message-id/20180924195048.7dhnjvq5ggwjtiwi@alap3.anarazel.de

regards
PAscal



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