Re: [HACKERS] Faster methods for getting SPI results

On 12/20/16 23:14, Jim Nasby wrote:
> I've been looking at the performance of SPI calls within plpython.
> There's a roughly 1.5x difference from equivalent python code just in
> pulling data out of the SPI tuplestore. Some of that is due to an
> inefficiency in how plpython is creating result dictionaries, but fixing
> that is ultimately a dead-end: if you're dealing with a lot of results
> in python, you want a tuple of arrays, not an array of tuples.

There is nothing that requires us to materialize the results into an
actual list of actual rows.  We could wrap the SPI_tuptable into a
Python object and implement __getitem__ or __iter__ to emulate sequence
or mapping access.