Ruslan A Dautkhanov <rusland(at)scn(dot)ru> writes:
> I have to create my own function in C lanuage, which
> will use SPI. The problem that when I had done all things,
> PostgreSQL says:
> isbs=# select pgf1test('123');
> ERROR: Can't find function pgf1test in file /usr/local/pgsql/lib/pgf1test.so
But it got past the CREATE FUNCTION command without complaint? That's
odd, because CREATE FUNCTION should make the same check.
Does the behavior change if you start a fresh session? If so, see
the LOAD command, which you need to use (or start a fresh session)
after any change of the shared library file.
regards, tom lane