Tzahi Fadida <tzahi_ml(at)myrealbox(dot)com> writes:
> Hi, I am learning how to use the c functions and my function below works
> when I do:
> select testgetrows();
> but when I do select * from testgetrows(); I am getting:
> "ERROR: cache lookup failed for type 0"
> Whats's the problem?
I don't think it's safe to do HeapTupleGetDatum() directly on a tuple
obtained from heap_getnext. You need to copy it.
regards, tom lane