On 21/12/2021, at 10:25 AM, Tom Lane wrote:
> Not quite like that. Look into nodeAgg.c, which solves a similar problem
> for the transvalues themselves with code like
>
>/* forget the old value, if any */
>if (!oldIsNull && !pertrans->inputtypeByVal)
>pfre
Matt Magoffin writes:
> I’m essentially doing a datumCopy() on every non-null input value.
If you're doing that in the aggContext, you definitely need to free
the prior one(s).
> I was wondering if there is a way to free the previously copied datum, since
> I don’t really need it anymore? Somet
I have a question about trying to keep memory from growing too much in a C
aggregate function with pass-by-reference types. I am trying to keep track of a
last-seen value in my aggregate state, so I have code roughly doing this:
Datum current;
MemoryContext aggContext;
AggCheckCallContext(fcinfo
