On 11/17/2004 5:07 PM, Josh Berkus wrote:


I understand that the sort_mem conf setting affects queries with order by,
etc., and the doc mentions that it is used in create index. Does sort_mem
affect the updating of indexes, i.e., can the sort_mem setting affect the
performance of inserts?

Only if the table has Foriegn Keys whose lookup might require a large sort. Otherwise, no.

Hmmm ... what type of foreign key lookup would that be? None of the RI generated queries has any order by clause.


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