Bruce YUAN <sua...@gmail.com> writes:
> How to use PQfn() in libpq library?
Look into src/interfaces/libpq/fe-lobj.c for several examples.
However, please note the comment in the documentation:
This interface is somewhat obsolete, as one can achieve similar
performance and greater functionality by setting up a prepared
statement to define the function call. Then, executing the statement
with binary transmission of parameters and results substitutes for a
fast-path function call.
> Which server functions can be
> executed from client?
Anything you could call normally can be called this way too.
regards, tom lane
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