19.04.2017 14:12, Vlad Khorsun wrote:
>    It give nothig to readers

   Not quite so. When array binding used with select, client can send request 
for new 
packet before it start tossing record values into user buffers and this way 
work in 
parallel with server and network, reducing total wait time.

>    Engine can't run more than one statement in attachment at same time. This 
> will not be
> changed.

   But engine can implicitly start new attachment and derived transaction to 
run this 
parallel statement and get the same result without need for application 
developer to 
explicitly care about it.

>    So - no, this features have no advantage over parallel readers.

   On the other hand parallel reader also have no advantages over these 
features and I 
don't see other tasks which they can be better for.

-- 
   WBR, SD.

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