Martijn van Oosterhout <> 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

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