Re: sort_mem affect on inserts?

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

> David,
>
>> 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.


Jan

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