On Fri, 18 Jun 2004, Jie Liang wrote:
> However, I am still thinking if I call one SELECT and one DELECT and one
> UPDATE and one INSERT a thousand times against same table with different
> arguments, should I consider performance iusse?
Right, this is a case where some benefits can be found, but remember the
premature optimization adage.
>
> Secondly, I assume the function should be a pre-compiled object stored
> on server side, doesn't it.
>
I depends on the language the function is written. plpgsql caches plans,
but not all procedural languages do.
Kris Jurka
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TIP 9: the planner will ignore your desire to choose an index scan if your
joining column's datatypes do not match
