Re: parameter hints to the optimizer

Bruce Momjian wrote:
> Oliver Jowett wrote:
> 
>>Merlin Moncure wrote:
>>
>>
>>>Another way to deal with the problem is to defer plan generation until
>>>the first plan execution and use the parameters from that execution.
>>
>>When talking the V3 protocol, 7.5 defers plan generation for the unnamed 
>>statement until parameters are received in the Bind message (which is 
>>essentially the same as what you describe). There was some discussion at 
>>the time about making it more flexible so you could apply it to arbitary 
>>statements, but that needed a protocol change so it didn't happen.
> 
> 
> What do you mean about arbitrary statements?  Non-prepared ones, or
> non-unnamed ones?

Non-unnamed ones. Adding flag on the Parse message that says when to 
plan the statement (or maybe on each Bind message even).

-O