On Sat, Nov 9, 2019 at 5:22 PM Andreas Karlsson <andr...@proxel.se> wrote:
> On 11/8/19 2:52 PM, Rafia Sabih wrote:
> > Now, my question is shouldn't we always use this list in sorted order,
> > in other words can there be scenarios where such a sorting will not
> > help? I am talking about only the cases where the list consists of all
> > constants and could fit in memory. Basically, when we are
> > transforming the in expression and found that it consists of all
> > constants, then sort it as well, codewise at transfromAExprIn, of course
> > there might be better ways to accomplish this.
> >
> > So, your thoughts, opinions, suggestions are more than welcome.
> If it is worth sorting them should depend on the index, e.g. for hash
> indexes sorting would just be a waste of time.

I think we also need to be careful that this might lead to regression
for cases where the list is already sorted.

With Regards,
Amit Kapila.
EnterpriseDB: http://www.enterprisedb.com

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