Обсуждение: Altering a plan

Hi,

I want to take a plan generated by the postgres optimizer and insert a constant in place of another constant in the plan. There is a function OidOutputFunctionCall() to get the constant. Similarly, is there any function to set the value of the constant?   What does OidInputFunctionCall() do?

Please reply soon, this is an emergency..

Thanks a lot,
Shruthi