CK Tan <ck...@vitessedata.com> writes:
> The bigint sum,avg,count case in the example you tried has some optimization.
> We use int128 to accumulate the bigint instead of numeric in pg. Hence the
> big speed up. Try the same query on int4 for the improvement where both pg
> and vitessedb are using int4 in the execution.
Well, that's pretty much cheating: it's too hard to disentangle what's
coming from JIT vs what's coming from using a different accumulator
datatype. If we wanted to depend on having int128 available we could
get that speedup with a couple hours' work.
But what exactly are you "compiling" here? I trust not the actual data
accesses; that seems far too complicated to try to inline.
regards, tom lane
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