Martijn van Oosterhout <kleptog(at)svana(dot)org> writes:
> Here is a patch to the documentation clarifying some minor issues.=20
> The first is to the main SPI documentation clarifying that SPI isn't
> available unless there is a current snapshot (leading to the "no
> snapshot has been set" error).
This is wrong.
> The second clarifies when the get_fn_expr_rettype() and
> get_fn_expr_argtype() functions can actually provide the information
> requested.
Except it doesn't actually tell you anything very definite ...
regards, tom lane