"Stephen Denne" <Stephen(dot)Denne(at)datamail(dot)co(dot)nz> writes:
> Isn't it more a case of
> "even a minor variation in just one of this query's parameters can result in wildly different cost estimate,
> so I really need to re-plan it every time."
The $64 problem is not that; it is that certain optimizations will not
be applied, period, unless the planner is dealing with values known
at plan time.
regards, tom lane