Re: Extract numeric filed in JSONB more effectively

Hi Jian:

Thanks for the review! 

compared with jsonb_numeric. I am wondering if you need a free *jb.
elog(INFO,"jb=%p arg pointer=%p ", jb, PG_GETARG_POINTER(0));
says there two are not the same.

Thanks for pointing this out,  I am not sure what to do right now.

Basically the question is that shall we free the memory which

is allocated in a function call.  The proof to do it is obvious, but the

proof to NOT do it may be usually the memory is allocated under

ExprContext  Memorycontext,  it will be reset once the current 

tuple is proceed, and MemoryContextReset will be more effective

than pfrees;